AOR AR8600 Operating Manual

Section 1

(1) AR8600 Index

(1) Index .......................................................................................................................... 1

1-1 Introduction ................................................................................................................ 5

1-2 Take care of your radio .............................................................................................. 5

1-3 Attention while operating ............................................................................................ 6

1-4 Accessories supplied ................................................................................................. 7

1-5 Controls & functions .................................................................................................. 7

1-5-1 Keypad ................................................................................................................... 9

1-5-2 Summary of keys .................................................................................................... 10

1-5-3 Important controls ................................................................................................... 15

1-6 Power supply .............................................................................................................16

1-6-1 Optional internal battery (BP8600) .......................................................................... 16

1-6-2 Charging the optional BP8600 battery .................................................................... 17

1-6-3 Battery considerations ............................................................................................ 1 8

1-6-4 Cigar lighter lead .................................................................................................... 18

1-7 i.f. output and spectrum display ................................................................................. 19

(2) Making the AR8600 ready for operation .................................................................. 20

2-1 LCD (Liquid Crystal Display) ...................................................................................... 20

2-2 Connect the aerial (antenna) ..................................................................................... 21

2-3 Connect power .......................................................................................................... 21

2-4 Keypad and knobs... what you need to know ‘most’ .................................................. 2 2

2-4-1 ENTER key ............................................................................................................ 2 2

2-4-2 FUNCTION key ...................................................................................................... 22

2-4-3 PASS key ...............................................................................................................22

2-4-4 CLEAR key ............................................................................................................. 23

2-4-5 MONITOR key ........................................................................................................ 23

2-4-6 KEY lock ................................................................................................................ 23

2-4-7 STANDBY key ........................................................................................................ 23

(3) Basic manual operation of the receiver .................................................................. 24

3-1 Switching on for the first time .................................................................................... 24

3-2 2VFO twin VFO selection .......................................................................................... 24

3-3 Entering a frequency using the numeric keypad ........................................................ 26

3-4 Correcting frequency input ........................................................................................ 27

3-5 Changing frequency using the ñ and ò keys ............................................................ 27

3-6 Changing frequency using the main dial .................................................................... 28

3-7 Changing receive mode ............................................................................................. 29

3-7-1 Auto-mode selection ............................................................................................... 29

3-7-2 Receive mode selection menu ................................................................................ 29

3-8 Changing tuning STEP size ....................................................................................... 3 1

3-9 STEP-adjust ..............................................................................................................33

3-9-1 Automatic calculation of step adjust ....................................................................... 33

3-9-2 Cancelling step adjust ............................................................................................ 34

3-9-3 Manual setting of step adjust .................................................................................. 34

3-10 FREQUENCY OFFSET ........................................................................................... 36

3-10-1 Using pre-programmed frequency offset data ....................................................... 36

3-10-2 Entering new frequency offset data ...................................................................... 37

3-11 Attenuator ................................................................................................................ 38

3-12 Noise limiter ............................................................................................................. 38

3-13 AFC - Automatic Frequency Control ........................................................................ 39

(4) VFO enhanced facilities ........................................................................................... 41

4-1 Quick memories ........................................................................................................ 41

4-1-1 Saving quick memory data ..................................................................................... 41

4-1-2 Recalling quick memories ...................................................................................... 42

4-2 VFO scan .................................................................................................................. 42

4-2-1 VFO SCAN sampling time ...................................................................................... 43

Section 1

4-3 VFO Search ...............................................................................................................43

4-3-1 Defining VFO search .............................................................................................. 43

4-3-2 Starting VFO search ............................................................................................... 43

4-3-3 Forcing VFO search to resume & changing search direction .................................. 44

4-3-4 Locking out unwanted frequencies (PASS) ............................................................ 44

4-3-5 Saving active frequencies to memory ..................................................................... 45

4-3-6 Exiting VFO search ................................................................................................ 46

4-4 VFO environment menu ............................................................................................ 46

4-4-1 VFO SCAN ............................................................................................................. 4 6

4-4-2 VFO search DELAY ................................................................................................ 46

4-4-3 VFO search LEVEL squelch .................................................................................... 47

4-4-4 VFO search VOICE squelch .................................................................................... 48

4-4-5 VFO FREE search ................................................................................................... 48

4-4-6 VFO AUTO STORE ................................................................................................. 49

4-4-7 VFO DELETE bank “J” ............................................................................................ 49

4-4-8 VFO QUICK MEMORY ............................................................................................ 50

(5) Memory channels & banks ...................................................................................... 51

5-1 Memory channel overview ......................................................................................... 51

5-2 Storing VFO frequencies & data into memory ............................................................ 52

5-2-1 Another example of memory write .......................................................................... 54

5-2-2 Automatic memory allocation ................................................................................. 55

5-3 Memory write protect ................................................................................................. 55

5-4 Memory read “M.RD” ................................................................................................. 5 6

5-4-1 Memory channel review / hunt ................................................................................ 57

5-5 Deleting memory channels ........................................................................................ 57

5-5-1 Memory channel editing ......................................................................................... 57

5-5-2 Adding text names to memory banks ..................................................................... 58

5-6 Transfer of memory channel to VFO .......................................................................... 58

5-7 Dynamic memory bank resizing ................................................................................. 58

(6) Priority operation ..................................................................................................... 59

6-1 Engaging PRIORITY channel .................................................................................... 60

6-2 Changing PRIORITY channel data ............................................................................ 60

6-2-1 Changing the priority channel data pickup channel ................................................ 61

6-2-2 Changing priority interval time ................................................................................ 61

(7) SCAN - scanning memory channels & banks ......................................................... 62

7-1 SCAN - outline introduction ....................................................................................... 62

7-2 SCAN considerations ................................................................................................ 62

7-3 Starting to SCAN ....................................................................................................... 63

7-3-1 Transfer of active memory to VFO .......................................................................... 64

7-4 Selecting a scan bank ............................................................................................... 64

7-5 Channel PASS ........................................................................................................... 64

7-5-1 Toggling memory channel PASS ............................................................................ 65

7-5-2 Removing ALL memory PASS tags in one go ........................................................ 6 5

7-6 Deleting memory channels ........................................................................................ 66

7-6-1 Deleting single memory channels ........................................................................... 66

7-6-2 Deleting whole memory banks in one go ................................................................ 66

7-7 Scan bank link (scan group) ...................................................................................... 66

7-8 Additional scan facilities ............................................................................................ 67

7-8-1 Scan DELAY .......................................................................................................... 68

7-8-2 Scan LEVEL ........................................................................................................... 68

7-8-3 Scan VOICE ........................................................................................................... 69

7-8-4 Scan FREE ............................................................................................................ 70

7-8-5 Scan (receive) MODE ............................................................................................ 70

7-8-6 Write protect of memory channels & banks ............................................................ 71

7-9 Select scan ................................................................................................................ 71

7-9-1 Adding select scan channels in memory read ........................................................ 71

7-9-2 Starting / stopping select scan .............................................................................. 71

Section 1

7-9-3 Select scan environment ........................................................................................ 72

7-9-4 Editing the contents of the select scan list .............................................................. 72

7-9-5 Deleting all select scan channels ........................................................................... 73

(8) Search mode ............................................................................................................. 74

8-1 Search types .............................................................................................................74

8-1-1 Program search overview ....................................................................................... 74

8-2 Starting program search ............................................................................................ 75

8-2-1 Reversing the direction of search ........................................................................... 75

8-2-2 Forcing the search to resume ................................................................................. 75

8-2-3 Stopping the search ............................................................................................... 75

8-2-4 Copying an active frequency to the VFO or memory location ................................. 76

8-3 Selection of search bank ........................................................................................... 76

8-4 Programming a search bank ..................................................................................... 78

8-5 Locking out unwanted active frequencies (PASS) ..................................................... 80

8-5-1 Search pass menu ................................................................................................. 80

8-6 Search bank link ........................................................................................................ 81

8-7 Additional search facilities ......................................................................................... 82

8-7-1 Search DELAY ....................................................................................................... 83

8-7-2 Search LEVEL ....................................................................................................... 84

8-7-3 Search VOICE ........................................................................................................ 84

8-7-4 Search FREE ......................................................................................................... 85

8-7-5 AUTO STORE ........................................................................................................ 86

8-7-6 DELETE bank “J” ................................................................................................... 86

8-7-7 Deleting search banks ............................................................................................ 87

8-7-8 Write protect and copying search banks ................................................................ 87

(9) EDIT menu ................................................................................................................88

9-1 EDIT COPY memory channel .................................................................................... 88

9-2 EDIT COPY memory bank ......................................................................................... 89

9-3 EDIT COPY search bank ........................................................................................... 90

9-4 EDIT MOVE memory channel .................................................................................... 90

9-5 EDIT SWAP memory channel ................................................................................... 91

9-6 EDIT memory channel ............................................................................................... 9 2

9-7 EDIT Search protect .................................................................................................. 93

(10) DELETE menu facilities ......................................................................................... 94

10-1 DELETE search banks and search PASS frequencies ............................................ 94

10-2 DELETE VFO PASS ................................................................................................ 95

10-3 DELETE memory bank ............................................................................................ 95

10-4 DELETE select scan channels ................................................................................. 96

10-5 DELETE memory channel protect ........................................................................... 96

10-6 DELETE memory channel pass ............................................................................... 97

(11) Write protect ...........................................................................................................98

11-1 Memory CHANNEL write protect ............................................................................. 98

11-2 Write protect during memory input ........................................................................... 98

11-3 Channel protect status for existing memory channels .............................................. 98

11-4 Channel protect delete ............................................................................................ 99

11-5 Memory BANK write protect .................................................................................... 99

11-6 Search bank write protect ........................................................................................ 100

11-7 Global write protect ................................................................................................. 10 0

(12) TEXT search and input ........................................................................................... 101

12-1 Text input menus ..................................................................................................... 101

12-2 Text search ............................................................................................................. 102

(13) SHORT CUT keys ................................................................................................... 103

13-1 Short cut menu access ............................................................................................ 103

13-2 Short cut text entry .................................................................................................. 1 04

13-3 Short cut text entry, keypad with ïðñò keys ........................................................ 105

Section 1

(14) Configuration menu ................................................................................................ 106

14-1 CONFIG BEEP ........................................................................................................ 106

14-2 CONFIG LAMP ........................................................................................................ 106

14-3 CONFIG CONTRAST .............................................................................................. 107

14-4 CONFIG Auto power off ........................................................................................... 107

14-5 CONFIG Remote RS232 ......................................................................................... 108

14-6 CONFIG FREQ DISP .............................................................................................. 108

14-7 CONFIG GLOBAL write protect ............................................................................... 109

14-8 CONFIG Opening message ..................................................................................... 109

(15) Band scope ............................................................................................................. 110

15-1 Starting the band scope .......................................................................................... 110

15-2 Exit from band scope ............................................................................................... 111

15-3 Setting frequency span width (waveform enlargement) ........................................... 111

15-4 Moving the marker ................................................................................................... 112

15-5 Marker to strongest signal (peak search) ................................................................. 112

15-6 Entering a new centre frequency ............................................................................. 112

15-7 Transfer of marker frequency to VFO ...................................................................... 112

15-8 Peak hold ................................................................................................................ 113

15-9 Saving active trace to memory ................................................................................ 113

15-10 Loading stored band scope traces from memory ................................................... 113

(16) Sleep ....................................................................................................................... 114

(17) Computer control RS232 ........................................................................................ 114

17-1 How to send an RS232 command ........................................................................... 114

17-2 Brief command index (RS232) ................................................................................. 115

17-3 Detailed RS232 command listing ............................................................................. 116

17-4 Clone of data via the RS232 socket ......................................................................... 122

17-4-1 How to clone data ................................................................................................. 123

(18) Slot card socket ...................................................................................................... 124

18-1 Optional slot cards ................................................................................................... 124

18-1-1 Fitting the slot card ............................................................................................... 125

18-1-2 Removing the slot card ......................................................................................... 125

18-2 Slot card option menu - registering cards ................................................................ 125

18-3 TE8200 optional tone eliminator slot card ................................................................ 126

18-4 CT8200 optional CTCSS slot card ........................................................................... 127

18-4-1 CTCSS tone squelch ............................................................................................ 128

18-4-2 CTCSS search ..................................................................................................... 129

18-5 VI8200 optional voice invertor slot card ................................................................... 129

18-6 RU8200 optional record & playback slot card .......................................................... 130

18-6-1 Recording ............................................................................................................. 130

18-6-2 Playback .............................................................................................................. 131

18-7 EM8200 optional external extended memory slot card ............................................ 132

18-7-1 Initialising (formatting) the EM8200 before use .................................................... 132

18-7-2 EM8200 ALL-DATA save and load ....................................................................... 133

18-7-3 EM8200 ALL-MEM save and load ........................................................................ 134

18-7-4 EM8200 MEMORY BANK save and load ............................................................. 135

18-7-5 EM8200 ALL-SRCH save and load ...................................................................... 135

18-7-6 EM8200 SEARCH BANK save and load .............................................................. 136

18-7-7 EM8200 internally stored band scope save and load ............................................ 137

(19) Trouble shooting .................................................................................................... 139

19-1 Soft reset of microprocessor .................................................................................... 139

19-2 Other trouble shooting suggestions ......................................................................... 139

19-3 Trouble shooting - Take note of the following .......................................................... 140

(20) Optional accessories ............................................................................................. 141

(21) Aerial (antenna), earths & propagation ................................................................. 142

(22) Specification ........................................................................................................... 143

Section 1-1, 1-2

1-1 Introduction

Thank you for purchasing the AR8600 transportable wide band all mode receiver. The AR8600 is designed using the very latest technology to ensure the highest levels of performance and reliability. To get the best possible results from your AR8600 we recommend that you read this manual and familiarise yourself with the receiver. Although carefully designed, this receiver (like all receivers) suffers from a degree of internal noises known as spurii. They are a product of the receiver’s circuitry and do not represent a fault. Apparent faults may be due to accidental misoperation of the receiver, if you think there is a problem, carefully read all of the manual before deciding to contact your equipment supplier for advice.

It is acknowledged that sections of this manual are repetitive, this is to enable the manual to be used as a reference book (you don’t have to read it all from cover to cover in one go). Due to the international nature of the product, some graphics contain Japanese characters.

Every effort has been made to make this manual correct and up to date. Due to continuous development of the receiver and by error or omission anomalies may be found and this is acknowledged.

© This manual is protected by copyright AOR Ltd 2000. No information contained in this manual may be copied or transferred by any means without the prior written consent of AOR Ltd. AOR and the AOR logo are trade marks of AOR Ltd. All other trade marks and names are acknowledged.

E&OE

1-2 T ake care of your radio

There are no internal operator adjustments. In the unlikely event of servicing being required, please contact your dealer for technical assistance.

Do not use or leave the receiver in direct sunlight (especially the LCD). It is best to avoid locations where excessive heat, humidity, dust and vibration are expected. Always keep the AR8600 free from dust and moisture. Use a soft, dry cloth to gently wipe the set clean, never use abrasive cleaners or organic solvents which may damage certain parts. Treat the AR8600 with care, avoid spillage or leakage of liquids into the receiver and associated power supply. Special care should be taken to avoid liquid entering around the controls, through the speaker grille or via the connection jacks.

The AR8600 is designed for operation from a good quality regulated d.c. supply of 12 to 14V, which should be capable of supplying 1Ampre. Never connect the AR8600 directly to the a.c. supply. The AR8600 also has the provision of the optional BP8600 NiCad battery pack, see

The d.c. input socket uses a 2.1mm power connector. This connector is configured CENTRE POSITIVE, the chassis of the receiver is at negative ground. Where provided (depending upon world market location), the power supply is pre-wired and provides a nominal 12V d.c. output with suitable connectors being fitted as standard for the a.c. power input and connection to the AR8600.

SAFETY NOTICE - Always disconnect the power supply from the a.c. socket when not in use.

If used mobile, it should be noted that the AR8600 has not been manufactured

or tested to meet any specific mobile safely requirements. The AR8600 has no internally

user adjustable parts, refer any technical work such as the fitting of the optional

BP8600 internal NiCad battery pack to an authorised service engineer.

If using the AR8600 in a base station situation, the best short wave reception is usually achieved by the fitting of a separate external earth rod, however consider the implications carefully if your a.c. building supply uses a Protective Multiple Earth (PME) system. If in doubt consult an expert electrician. Never earth to a gas pipe!

The AR8600 has a single BNC aerial socket for all frequencies. This is intended for connection to its supplied whip aerial or preferably a 50 OHM (unbalanced) coaxial fed aerial such as a discone, dipole, unipole, yagi etc. When sighting the aerial, avoid power cables. Ensure that you do not confuse the aerial and i.f. output sockets as they both employ BNC sockets.

section 1-6-1

Section 1-2, 1-3

Operating anomalies

Should the AR8600 appear to behave strangely, normal operation may be easily achieved by resetting the microprocessor. Two scenarios may be encountered due to power transients etc:

Symptom: Action:

LCD remains on, no control of the keypad. Remove any connection to external power such as the power supply or cigar lead (remove the optional BP8600 internal NiCad battery pack if fitted) and count to thirty! Reconnect power (or refit the battery) and switch on again. Normal operation should be restored but the last used frequency will be lost, the AR8600 will restore the last but one frequency to display.

The AR8600 fails to power up. Try the suggestion given in (1) then hold the key while powering up the

AR8600 to ‘Soft reset’ the microprocessor.

1-3 Attention while operating

1. Certain key operations are acted upon when the key is RELEASED, not while it is pressed. Allow

time for the AR8600 to register such actions before pressing another key.

2. The keylock is intentionally made to be To release keylock, the key has to be held for more than one second, the key legend on the LCD confirms operation. The key is disabled during keying sequences (such as when

entering frequencies).

3. If a key sequence is not completed, the microprocessor will automatically abort most operations after about 90 seconds of keypad inactivity.

4. Currently displayed VFO data is saved at power down (to increase speed of operation and to reduce write cycles). For this reason, if the AR8600 is powered down using the PWR/VOL control or external power is removed (without the optional internal BP8600 battery fitted or becomes exhausted), the last displayed frequency will be lost and the frequency used prior to this will be displayed when next powered up.

difficult to operate

to prevent accidental operation.

Terminology - Search & Scan

If you have not used a wide range monitor before or are not familiar with the terminology used, it is very important to understand the difference between SEARCH and SCAN modes.

SEARCH: The AR8600 provides several operations where transmissions (active frequencies) may be automatically located by sweeping the receiver over a wide frequency range, either from the currently displayed frequency travelling upwards (or downwards) in a specified tuning increment (step) or by sweeping over-and-over between two specified frequency limits. This process is known as SEARCHING, as the title implies, it can take a long time to find transmissions due to their ‘often intermittent’ and brief nature. For this reason it is best to slice large frequency ranges into smaller, more manageable pieces where they may be intensively studied.

When examining large frequency bands, it is common to find that 90% of frequencies are inactive and only a small number of the remaining constitute what you really want. Searching still remains the best way to initially locate active and interesting transmissions (in conjunction with a good frequency listing and band plan).

SCAN: Once active transmissions have been identified (either by searching or by using a good frequency guide), it is more efficient to store the data into memories which can be rapidly and automatically monitored in succession stopping when activity is encountered. This forms a much more efficient means of monitoring the most wanted frequencies as you have targeted 100% what you most want to hear, by contrast searching is very inefficient for day-to-day monitoring.

Section 1-3, 1-4, 1-5

&Note:

search & scan facilities to operate.

active frequency when the squelch opens and “S” ‘squelch open’ legend is displayed to the left of the signal meter. Advance the squelch control clockwise until the background noise is just cancelled, this is known as the threshold position. If the squelch control is advanced too far, weaker signals may be missed.

It is very important that the squelch is advanced to cancel background noise for the

This is because the AR8600 believes that it has found an

No noise and no “S” legend displayed (with squelch advanced clockwise passed threshold) = squelch closed.

Signal received or ‘noise’ emanating from speaker (squelch fully anti-clockwise, below threshold) with “S” legend displayed = squelch open.

1-4 Accessories supplied

The following items are provided in the carton box:

1 x AR8600 receiver 1 x Whip aerial on a right-angle BNC connector (RA8600) 1 x Medium Wave (MW) bar aerial 1 x Power supply (may be supplied in some world market areas and in a separate carton) 1 x Operating manual (this booklet)

1-5 Controls & functions

Controls are located on the front with most connection sockets on the rear of the AR8600, a brief identification is given here:

See over for a further description...

Section 1-5

Front cabinet

1. Rotary volume control plus isolate power On/Off

2. Rotary squelch control

3. Phones socket 3.5mm (mono or stereo may be used)

4. Standby key, for daily use as On/Off

5. Key Lock key

6. Monitor key

7. Function key

8. Clear / option key

9. LCD (Liquid Crystal Display)

10. Main keyboard (ten keys plus decimal and enter)

11. Arrow keys (frequency change and menu manipulation)

12. Main rotary dial (frequency change and menu manipulation)

Rear cabinet

13. IF output (10.7MHz) for connection to the SDU5500 Spectrum Display Unit (requires internal activation in a workshop)

14. Serial number plate

15. BC ANT, medium wave bar aerial connection

16. ANT BNC aerial socket (all frequencies)

17. REMOTE RS232 socket (9-pin D-type)

18. ACC socket, 8-pin mini-DIN, tape record etc

19. EXT.SP speaker socket 3.5mm mono 8 OHMS

20. DC 12V d.c. input nominal 12V @ 1A (centre positive)

21. RU8200 socket for record / playback slot card

22. EM8200 socket for external memory slot card

23. VI8200 socket for analogue voice inverter slot card

24. CT8200 socket for CTCSS slot card

25. TE8200 socket for audio tone eliminator slot card

RS232 connection requirements:

The REMOTE RS232 socket (17 above) is designed for connection directly to an RS232 serial port of a computer such as a PC. No interface is required, just a standard RS232 lead... avoid nul-modem leads as they are not suitable. Connections for a PC are as follows:

AR8600 PC 9 way RS232

22 33 5 5 GROUND 77 88

AR8600 PC 25 way RS232

23 32 5 7 GROUND 74 85

ACC connections 1 12V d.c. output max

current 30mA 2 Detector output (without audio filtering). 180mV RMS @ 100k OHMS or greater

3 N/C 4 & 5 Tape motor switching contact for low voltage 12V d.c.,

max current 350mA with insulating voltage of 40V Switch on impedance is 1.2 OHMS

6 High level audio output 15mV RMS @ 10k OHMS 7 Low level audio output 0.7mV @ 10k OHMS 8 Ground

Section 1-5-1

1-5-1 Keypad

Keypad conventions

Most keys have multiple functions, their functions are printed on the cabinet. However due the restriction of available size, not all facilities can be shown on the keypad printing. To ease access to the many facilities, two formats are employed:-

Push and release the key quickly to access the required facility. This applies to

primary facilities of keys such as numeric 1, 2, 3 etc. Also for example, quickly the

key while in 2VFO mode to toggle between the two VFOs VFO-A and VFO-B.

Press and HOLD the key for more than one second to access the second

function, sometimes this is in conjunction with the key.

Function key manipulation

The key also may be used by PUSH and PRESS depending upon the specific requirement, in most cases however the key will require a simple PUSH.

“FUNC” LCD legend “FUNC” LCD legend

solid flashing

= =

Section 1-5-2

1-5-2 Summary of keys

The keypad is split into four areas of the front cabinet of the AR8600, the ‘ten keys’ for frequency access, the bottom row for VFO, SCAN, SEARCH operations, three on the left for standby, key lock, monitor and a group of four arrow keys on the right for frequency control and manipulation of menus. When initially powered, the lamp is configured to AUTO, the lamp will be permanently illuminated when connected to external power and when running from the optional BP8600 internal battery pack, the lamp will automatically illuminate when keys are pressed and will stay illuminated for five seconds after the last key press. It is possible to configure the lamp to OFF and CONTINUOUS in addition to AUTO.

An RS232 lead is required for computer control, various optional SLOT CARDS are available which further extend the AR8600 facilities (and menus).

PUSH this key to place the AR8600 into SEARCH mode, the LCD “SRCH” legend confirms operation.

to access the bank link menu where up to ten different selections

of linked search banks may be grouped, this is useful where a large frequency band has been split up into smaller more manageable sizes for close scrutiny.

Additional search related parameters may be set up to optimise each search group independently using this menu:-

DELAY OFF / HOLD / 0.1s to 9.9s (default = OFF) LEVEL OFF / 1 to 255 (default = OFF) VOICE OFF / 1 to 255 (default = OFF) FREE OFF / 1s to 60s (default = OFF) AUTOSTORE ON / OFF (default = OFF) DELETE J (deletes the current data from bank J)

PUSH this key to place the AR8600 into MEMORY READ mode, the LCD legend “M.RD” confirms selection. again to initiate SCAN, the LCD legend “SCAN” confirms selection

to access the bank link menu where up to ten groups of memories

may be selected to be scanned in succession, effectively forming one large scan bank. Additional scan related parameters may be set up to optimise each scan group independently using this menu:-

DELAY OFF / HOLD / 0.1s to 9.9s (default = OFF) LEVEL OFF / 1 to 255 (default = OFF) VOICE OFF / 1 to 255 (default = OFF) FREE OFF / 1s to 60s (default = OFF) MODE SCAN ALL / WFM / NFM / SFM / WAM / AM

/ NAM / USB / LSB / CW (default = ALL)

to set the ratio of bank size between memory channels sharing a

common letter in upper and lower case.

Section 1-5-2

PUSH this key to place the AR8600 into 2VFO mode where you may receive spot frequencies and ‘generally monitor activity’. The LCD displays two lines of frequency readout, the upper (larger) being the current receive frequency. The LCD legend “2VFO” confirms selection with each VFO being identified as “V-A” and “V-B”.

again to toggle between VFO-A “V-A” and VFO-B “V-B”.

to initiate VFO search between the two displayed frequency limits set by VFO-A and

VFO-B, the legend “V-SR” confirms selection of VFO SEARCH.

to access the VFO MODE select menu where the following

parameters may be configured:-

VFO SCAN ON / OFF (default = OFF) DELAY OFF / HOLD / 0.1s to 9.9s (default = OFF) LEVEL OFF / 1 to 255 (default = OFF) VOICE OFF / 1 to 255 (default = OFF) FREE OFF / 1s to 60s (default = OFF) AUTOSTORE ON / OFF (default = OFF) DELETE J (deletes the current data from bank J) QUICK MEMORY OFF / 10s to 990s (default = OFF)

PRESS this key to switch the AR8600 on and off as a toggle. The main PWR/VOL control must be ‘on’ in order for the STANDBY switch to operate. Hold the key for more than one second for the

press to be registered.

PUSH this key to activate the band scope, the , or key to return to normal operation.

&Note: Priority operation is disabled when the band scope facility is in use.

Traces will be overwritten as the band scope is written from left to right on the LCD. To build up a long term activity display, to toggle the PEAK HOLD facility on / off, the

LCD legend “HLD” confirms operation.

The key sequence recalls a previously saved band scope trace.

PUSH this key to PASS (lockout) memory channels during memory read & scan mode and to PASS (skip) unwanted frequencies in search mode. Also acts as select ON/OFF/DEFAULT toggle in various menus.

Section 1-5-2

in 2VFO mode to access the VFO PASS menu which extends to include the

SEARCH bank pass edit menu.

in 2VFO, SEARCH or SCAN mode to access the SELECT SCAN

edit menu.

PUSH to abort entry via the keypad.

to select the optional SLOT CARD when fitted.

and HOLD the key while powering On the AR8600 to soft reset the microprocessor

should the AR8600 appear to behave strangely... no memory contents will be lost.

Numeric figure one during frequency input. Selection of memory/scan bank “A” or “a” and search bank “A” or “a” or “K” or “k”.

to toggle the attenuator on / off, the LCD legend “ATT” confirms

operation.

to toggle the noise limiter on / off, the LCD legend “NL” confirms

operation.

Numeric figure two during frequency input. Selection of memory/scan bank “B” or “b” and search bank “B” or “b” or “L” or “l”.

to access the tuning STEP size (increment) menu.

Numeric figure three during frequency input. Selection of memory/scan bank “C” or “c” and search bank “C” or “c” or “M” or “m”.

to access the receive mode selection menu.

to select AUTO-MODE where the receiver mode and tuning step

are automatically selected by the AR8600 microprocessor from the pre-programmed band plan data (this is a short cut to save using the receive mode menu). The LCD legend “AUT” confirms that auto-mode is in operation.

Section 1-5-2

Numeric figure four during frequency input. Selection of memory/scan bank “D” or “d” and search bank “D” or “d” or “N” or “n”.

toggles the priority facility on/off (assuming that one has already

been assigned using the priority menu). The LCD legend “PRI” confirms when priority has been selected.

to access the priority menu where the data from a memory

channel may be assigned for priority use. The interval sampling time may also be specified.

Numeric figure five during frequency input. Selection of memory/scan bank “E” or “e” and search bank “E” or “e” or “O” or “o”.

to initiate select scan (assuming that more than one memory

channel has already been tagged for select scan). The LCD legend “SEL” indicates when select scan is active. or or to exit select scan.

Numeric figure six during frequency input. Selection of memory/scan bank “F” or “f” and search bank “F” or “f” or “P” or “p”.

to access the program search menu where upper / lower fre-

quency limits etc for search mode may be entered.

Numeric figure seven during frequency input. Selection of memory/scan bank “G” or “g” and search bank “G” or “g” or “Q” or “q”.

to access the configuration menu where the beep, lamp, LCD

contrast, RS232 etc. may be configured.

Numeric figure eight during frequency input. Selection of memory/scan bank “H” or “h” and search bank “H” or “h” or “R” or “r”.

to access the edit menu when memory channels and search

banks may be amended and copy protection configured.

Section 1-5-2

Numeric figure nine during frequency input. Selection of memory/scan bank “I” or “i” and search bank “I” or “i” or “S” or “s”.

will delete the currently displayed memory channel during memory

read or scan.

accesses the delete menu where search banks, VFO pass

frequencies, memory banks, select channel tags, channel protect status & memory pass tags may be deleted.

Numeric figure zero during frequency input. Selection of memory/scan bank “J” or “j” and search bank “J” or “j” or “T” or “t”.

to toggle the AFC (Automatic Frequency Control) facility on/off, the

LCD legend “AFC” confirms selection.

to access the clone

RS232 male-male, pin-pin lead will be required.

Numeric decimal during MHz format frequency input. Used in memory and search as a CASE SHIFT key to toggle between UPPER and LOWER case banks.

to access the frequency offset menu.

to access the sleep timer menu.

Used as an ENTER key to accept data entry.

during VFO operation to write the current frequency to QUICK MEMORY where the

key sequence ð recalls quick memory. The ïð keys may be used to cycle through the quick memories, the LCD legend “«” indicates when a quick memory has been recalled.

to enter the current frequency in to one of the 1,000 memory channels.

to access the text search menu.

(copy between radio)

menu. A special

Section 1-5-3

1-5-3 Important controls

The bottom row of seven keys are fundamental in the operation of the AR8600. The SCAN, SEARCH and VFO functions are actioned via this set of keys along with the FUNC and CLEAR operations.

FUNCTION KEY

The function (shift) key (located on the left hand side) is used to select the second function of keypad facilities.

to toggle the function status on/off. A solid reverse legend LCD “FUNC” indicates

when function shift is in operation. The function status is terminated automatically in the normal course of entry.

to initiate

“FUNC” legend flashes when

double-shift

which is used in certain menus as a short-cut. The reverse

is engaged.

&Note: When the “FUNC” legend is displayed in VFO mode, the tuning speed will be

increased to assist rapid frequency change using the arrow keys and main dial.

The KEY LOCK is intentionally small to reduce the chances of accidental operation. Key lock is useful when you do not wish an important frequency to be lost or the AR8600 to be incorrectly set to a different frequency. The key lock status is

/ on, the and keys are not affected by key lock.

to toggle the key lock on /off, an LCD key symbol “ ” indicates status.

The MONITOR key is used to force the squelch open so that you may manually intervene to ensure that no weak signals are missed. and hold the key to defeat the squelch control (saves

turning the squelch control fully anti-clockwise then back to threshold position). When the “DUP” legend is displayed during frequency offset or VFO SCAN (DUPLEX) operation, the

key forces the AR8600 to switch to the alternative frequency.

In SCOPE mode, the key enables the reception of the marker frequency.

MAIN DIAL

This large rotary control is intended to be rotated using your fingers and thumb or by placing your thumb on the edge and rotating using a circular movement. Primarily this is the tuning control, clockwise rotation tunes the AR8600 upward in frequency and anticlockwise rotation tunes downward in frequency using the selected tuning step size. When the “FUNC” legend is displayed, the tuning speed will be increased. The main dial is also used to move between menus and manipulate input through menus (generally mimicking the arrow keys).

not

deactivated by switch off

Section 1-5-3, 1-6, 1-6-1

ARROW KEYS

The arrow keys ïðñò are laid out as a group of four keys (up, down, left and right). This format is particularly convenient being placed directly above the main dial.

The right arrow key is used as a backspace when entering frequency via the keypad. Also selects bank in memory read mode, moves the cursor position (especially during text input), tunes the receiver and changes values in menus.

The left arrow key selects bank in memory read mode, moves the cursor position (especially during text input), tunes the receiver and changes values in menus.

The up arrow key increments to next memory channel in memory read mode, tunes the receiver in VFO mode, selects menu items, changes values in on-screen menus and forces scan & search to resume when stopped on a busy channel.

The down arrow key increments memory channel in memory read mode, tunes the receiver in VFO mode, selects menu items, changes values in on-screen menus and forces scan & search to resume when stopped on a busy channel.

&Note: Ensure that the arrow keys are operated cleanly and one at a time.

1-6 Power supply

The AR8600 is designed for operation using a good quality regulated d.c. supply of 12 to 14V, which should be capable of supplying 1A. Never connect the AR8600 directly

to the a.c. supply.

The d.c. input socket uses a mini 2.1mm power connector. This connector is configured CENTRE POSITIVE, the chassis of the receiver is at negative ground. If a power supply has been provided with the AR8600 (depending upon world market area), it is pre-wired and provides a nominal 12V d.c. output with suitable connectors being fitted as standard for the a.c. power input and connection to the AR8600.

&SAFETY NOTICE - Always disconnect the power supply from the a.c. socket when

not in use.

1-6-1 Optional internal battery

(BP8600)

The AR8600 has the provision for fitting a dedicated internal NiCad rechargeable battery pack BP8600. This pack comprises of 8 x AA NiCad high capacity 700mAhr sealed in a shroud with suitable connecting cable and plug. The BP8600 is primarily intended for emergency use or for applications away from an alternative power supply. Fitting and removal of the optional BP8600 is recommended to be carried out in a workshop... once fitted, the batteries must be used

Section 1-6-1, 1-6-2

on a regular basis, if you are not going to use the AR8600 with the BP8600 for extended periods (several months), it may be worth considering removing the batteries from the radio (to prevent the cells deteriorating). It is most important that they are charged before placing them into storage and reusing them within at least three months, ideally NiCads should be fully cycled not less than once every month after they have been placed into use, always charge NiCads before placing them into storage.

These BP8600 is not charged at the factory before shipping, so you will need to charge it for 48 hours before use. Dry cells such as Alkaline or Zinc / Manganese cannot be used, the AR8600 charging circuit is not designed to recharge dry cells or NiMHi batteries.

Fitting batteries

The optional BP8600 battery pack must be fitted in a workshop.

1-6-2 Charging the optional BP8600 battery

The optional BP8600 is intended to be charged while inside the AR8600 while connected to an external 12V d.c. power supply. Switch the AR8600 to STANDBY by pressing the key for more than

one second (or switching off the AR8600 using the PWR/VOL control). It will take 48 hours for the BP8600 to fully charge, the BP8600 will not successfully charge when the AR8600 is in operation.

The AR8600 will provide around 2 hours of continuous operation with one third volume and constant reception with the backlight switched off. The operational time between charges will be dependant upon volume level and operating parameters, the power save facility will also extend operating time.

If connected to an external power supply, the AR8600 many be used for continuous operation regardless of the charge status of the NiCad battery (the charge current being at a very low level).

When the NiCads near discharge, three states will be encountered:-

1. A battery symbol will appear in the extreme top right of the LCD a couple of minutes before the NiCads completely discharge. The operational cut-off point is difficult to determine making advance warning brief. The legend will have one diagonal bar representing minimal charge left.

2. The LCD battery legend will become an empty outline... operation will cease almost immediately.

3. The NiCads will expire and the set will power off (the VFO frequencies and last stored memory

may be lost). Connect a 12V d.c. power supply to continue operation or recharge the battery.

Section 1-6-3, 1-6-4

1-6-3 Battery considerations

The optional BP8600 battery is not factory charged. When the BP8600 has been fitted, charge the battery for 48 hours. After this time the NiCads should never be left in a flat condition or internal filaments will form (inside the NiCads) shorting its terminals rendering it useless. If you are not going to use the NiCads for a few months, charge them before placing them into storage. NiCads have a memory effect, for longevity, once a month flatten them completely then fully charge them again. Avoid excessive ‘topping up’, when possible, it is best to charge NiCads when they are totally flat.

If you have not used the cells for a long time, it may be difficult the battery to accept a charge, to help ‘bring them back to life’, first ensure they are COMPLETELY discharged then charge for a longer period of time, perhaps 72 hours. It is common practice to force complete exhaustion by leaving the squelch open and volume set to half until the AR8600 stops working, carry this out once a month to ensure best battery longevity.

Do not continuously charge (forever) without some use of the radio, this may shorten the life span of the NiCads. Although the charge current is of a very low level, where batteries are concerned, permanent charging leads to a small chance of explosion due to the build up of heat. If you intend permanently using the AR8600 from an external power supply, remove the BP8600 battery. Do not short NiCads as they can provide high current levels. The BP8600 will typically provide around 300 charge / discharge cycles.

1-6-4 Cigar lighter lead

It is possible to power the AR8600 from a vehicle using the optional DC8600 cigar lead, this will power the AR8600 in exactly the same manner as the a.c. power supply (except that it is connected to a vehicle 12V d.c. supply). Ensure that the vehicle has a 12V d.c. battery, do not connect to a

truck / H.G.V. 24V battery.

The tip on the cigar plug must be positive (+), the vehicle must be negative ground. A 1A fuse should be fitted inside the cigar lead, should this fuse blow for some reason, ensure it is replaced with the correct type. Avoid short circuits.

Switch off the AR8600, connect the cigar lead to the AR8600 12V d.c. input socket THEN connect the cigar plug to the vehicle and switch the AR8600 on. It is advisable to switch the AR8600 off when starting the vehicle as the starter motor often causes power surges. Some vehicles require their ignition to be ON for the cigar socket to operate.

Section 1-7

1-7 IF output and Spectrum Display Unit (SDU5500)

The rear panel has a 10.7MHz i.f. output designed to drive the SDU5500 optional Spectrum Display Unit. The AR8600 must be enabled in order to provide the i.f. output, this operation should be carried out in a workshop. The WFM circuit of the AR8600 becomes permanently active to achieve a wide bandwidth (irrespective of receive mode employed), however the usable bandwidth remains smaller than the total 10MHz provided by the SDU5500. The i.f. output varies depending upon receive frequency and receive mode.

The SDU5500 provides an excellent tool for locating elusive transmission with a PEAK capability to ‘freeze’ the briefest of transmissions for later measurement of frequency and level after the event. A free supporting PC software package provides a virtual on-screen display of the SDU5500 with AVI video recording to disk so that events may be replaced at varying speeds for historic analysis.

The firmware of the SDU5500 is FLASH upgradable. It may be necessary to upgrade the SDU5500 firmware to support for the AR8600, other models and new features may be added to the SDU5500 in the same manner. Details are published on the AOR web site including the HEX data and full instructions (plus computer control), no workshop equipment is required for firmware update and you do not need to remove the case of the SDU5500, all data is sent via the RS232 connection via a terminal program.

Section 2, 2-1

(2) Making the AR8600 ready for operation 2-1 LCD (Liquid Crystal Display)

All relevant operational information is provided via the central LCD. To see all the available LCD legends, and to test the LCD, an LCD test routine has been provided. and hold the

key then switch the AR8600 on, (then turn the PWR/VOL control clockwise to provide power or if already switched on . When the sign-on message has been displayed all LCD graphics will

be displayed. To exit the LCD test . The LCD contrast is adjustable using the configuration menu as is the rear LCD & keypad illumination.

1 Priority 2 Search hold / band scope peak hold 3 Voice squelch 4 Free search / scan 5 Level squelch 6 Low battery (if optional BP8600 is fitted) 7 Auto store 8 Attenuator 9 Automatic Frequency Control 10 Step-adjust 11 Duplex 12 Sleep 13 Key lock 14 Function 15 Pass (lockout) 16 Select scan 17 Noise limiter

18 RS232 remote 19 Band scope peak search / quick memory 20 Auto-mode 21 Operating mode (2VFO, SRCH, SCAN etc) 22 Receive mode 23 Tuning step size 24 Active receive frequency 25 Squelch open legend 26 Signal meter

Typical examples of LCD:-

Section 2-1, 2-2, 2-3

2-2 Connect the aerial (antenna)

Two aerials are supplied with the AR8600:

l BNC mounted whip aerial with swivel l BC ANT - MW bar aerial

For general reception on the VHF/UHF bands, connect the supplied whip aerial to the BNC socket on the rear panel of AR8600. This is a bayonet connector, line up the slots, press down firmly and twist clockwise, the guides will position, then let go. Position the right-angle and swivel for the most convenient position with the whip generally pointing upward. A different (external) aerial can easily be fitted once you have established that the AR8600 is operating correctly and you are familiar with operation. If you wish to monitor MW (Medium Wave bands), plug in the BC ANT - MW bar aerial. The BC ANT

If you really press very hard, it is

possible to force the connector in

backwards... the BC ANT will not operate

if connected backwards!

slot is located centrally on the rear panel. With the ‘AOR’ logo of the BC ANT facing upward, insert the aerial into the slot, no force is required... if you feel

resistance, you are probably

trying to insert it upside-down!

The BC ANT is asymmetrical.

With the longer arm of the bar facing

to the right (grooves to the bottom).

2-3 Connect power

Connect the power to the AR8600 d.c. socket as detailed in manual. Either a regulated d.c. power supply 12 - 14V with capacity of 1A may be used or a suitable connection to a vehicle cigar lighter plug, do not connect to a 24V system such as a HGV. If the optional BP8600 battery is fitted, refer to

1-6-1

of this manual.

section 1-6

of this

section

Section 2-4, 2-4-1, 2-4-2, 2-4-3

2-4 Keypad and knobs... what you need to know ‘most’

Several of the keys have special characteristics, a summary was given in where it was explained that several keys have two of three functions associated with them.

section 1-5-1

of this manual

&IMPORTANT Note: Make sure you understand the PASS (LOCKOUT / SKIP) operation

before using the PASS facility, this applies to the PROTECT facility too, make sure both facilities are understood

The list presented here represents ‘what you need to remember most’ ! Refer to

manual

for the definition of and should you not understand the syntax shown here.

before

you attempt to use them.

section 1-5-1 of this

2-4-1 ENTER key

Used as an ENTER key to accept data entry.

to enter the current frequency in to memory (a quick memory facility is also available,

explained

section 4-1

to access the text search menu.

of this manual).

2-4-2 FUNCTION key

The function (shift) key is used to select the second function of keypad facilities.

to toggle the FUNCTION (shift) on/off. An solid reverse legend LCD “FUNC”

indicates when function shift is in operation. The function status is terminated automatically in the normal course of entry.

to initiate double-shift which is used in certain menus as a short-cut. The reverse

“FUNC” legend flashes when double-shift is engaged.

2-4-3 P ASS key

This key needs special attention as it acts as select ON/OFF/DEFAULT toggle in various menus.

key to PASS (lockout) memory channels during memory read & scan mode and to

PASS (lockout / skip) unwanted frequencies in search mode.

in 2VFO mode to access the VFO PASS menu which extends to include the

SEARCH bank pass edit menu.

PRESS in 2VFO, SEARCH or SCAN mode to access the SELECT SCAN

edit menu.

Section 2-4-4, 2-4-5, 2-4-6, 2-4-7

2-4-4 CLEAR key

to abort entry via the keypad... if in doubt, to return to the previous

display menu or operating mode.

to select an option when an optional SLOT CARD is used.

and hold the key while powering on the AR8600 to soft reset the

microprocessor should the AR8600 appear to behave strangely... no memory contents will be lost.

2-4-5 MONITOR key

The MONITOR key is used to force the squelch open to manually intervene ensuring that no weak signals are missed. and hold the key to defeat the squelch control (saves turning

the squelch control fully anti-clockwise then back to threshold position). When the “DUP” legend is displayed during frequency offset or VFO SCAN (DUPLEX) operation, the

key forces the AR8600 to switch to the alternative frequency.

In SCOPE mode, the key enables the reception of the marker frequency.

2-4-6 KEY LOCK

frequency. The key lock status is not deactivated by switch off / on, the and keys are not affected by key lock.

to toggle the key lock on / off, an LCD key symbol “ ” indicates status.

2-4-7 Standby key

The STANDBY key is used for every day switching on and off the AR8600. It is recommended that the PWR/VOL on/off switch be used only to isolate power from the receiver prior to connection and disconnection of the power lead... if the AR8600 is switched off using the PWR/VOL switch, the current VFO data may be lost.

to switch the AR8600 on and off.

Section 3, 3-1, 3-2

(3) Basic manual operation of the receiver

The following information explains how to tune to a specific frequency, change receive mode etc.

&Note: When the AR8600 is switched OFF USING THE STANDBY KEY, all VFO

data will be automatically stored into flash-ROM memory storage. No battery or capacitor is required for memory backup. If the AR8600 is switched off using the PWR/VOL control prior to

use of the key, the VFO data may be lost. If the optional BP8600 battery is fitted and becomes completely exhausted, the last stored memory channel or last VFO data ‘may’

be lost.

CURSOR

The CURSOR may apparently ‘go to sleep’ at times when menus are called. This is because of the many tasks called by the microprocessor, it is simply doing something else at the time you call it. This is particularly noticeable when recalling memory banks when only a few channels have been stored.

3-1 Switching On for the first time

Set the squelch control to the ‘mid point’ and rotate the PWR/VOL control to the ‘mid point’, as you start to rotate the PWR/VOL control a ‘click’ will be heard as the power

isolation switch contact switches on. For future switching on and off, the key. It is never a good idea to switch on any receiver with an earphone connected, there may be an

audible click when the unit is switched on or the volume may be accidentally set uncomfortably high. In the default state, the LCD will show the opening message “WELCOME TO THE NEW

WORLD OF AR8600” across the first four lines, at the same time the microprocessor generates the ‘boot up data’ required to control the receiver. When the key is

used, the opening message is bypassed. In normal use, the squelch control should be rotated clockwise until the background noise

just

cancelled, this is known as ‘ squelch control. Do not rotate the control too far clockwise or only the stronger local signals will be heard. If you find setting the squelch control difficult, try removing the aerial from the receiver.

Should you encounter problems in setting the volume level, the key to momentarily defeat (open) the squelch so that a comfortable volume level may be set.

It is best to the key at this time to place the AR8600 in a known state of operation. The condition of “VFO” (1VFO) or “2VFO” is generally referred to as

will be displayed in the upper left of the LCD to confirm selection.

threshold

’ and is the most sensitive setting for the

manual mode

. The “2VFO” legend

&Note: If the AR8600 has no data input via the keypad or other controls for 90 seconds,

some menus will time out and the AR8600 will return to its previous task just as if the

key had been operated.

3-2 2VFO twin VFO selection

The AR8600 receiver has of the frequency readout. The term VFO historically means ‘ refers to a tuneable data store which contains frequency, mode, step, step-adjust, attenuator etc.

a twin VFO system

being identified as “V-A” and “V-B” on the LCD to the left

Variable Frequency Oscillator

’ and today

Section 3-2

In 2VFO mode both VFO frequencies are displayed in parallel format on the LCD, one above the other. The ‘

active

LCD, the ‘ possible for the lower line frequency to be active, in this case a larger text size is employed for clarity).

’ VFO (the one which is currently receiving) is displayed using a large font centrally on the

standby

’ VFO is shown on a lower line using a smaller font size (when using VFO SCAN it is

the key to first select ‘

Each time the key is pushed VFO “V-A” and VFO “V-B” alternate between active and standby.

The first time you enter a frequency via the numeric keypad, it is best to the key to place the receiver in a known state of operation. the key so the “V-A” becomes the

active VFO (upper and largest of the two frequency readouts). This condition is referred to as ‘ mode with VFO-A active and VFO-B as standby. If you find the twin frequency display confusing,

or use the key sequence

(while no signal is present) so that only a single frequency readout is displayed, this is referred to as ‘

1VFO

’ mode. Both 1VFO and 2VFO modes may be referred to simply as VFO mode or

VFO mode

’ (should the receiver be scanning or searching etc).

2VFO

’

manual mode

Section 3-2, 3-3

Transfer to active VFO

When the AR8600 has stopped on an active frequency in memory read, scan or search mode, use the key sequence to transfer the frequency to the active (upper VFO).

The AR8600 will revert to 2VFO mode where the frequency may be monitored.

3-3 Entering a frequency using the numeric keypad

While in VFO mode, enter the required frequency using MHz format followed by .

Example of frequency entry 80.8 MHz

There is no need to key in the trailing zeros to the right of the decimal point as they are automatically added by the microprocessor.

If keying in a whole MHz such as 118.000 MHz there is no need to key in either the decimal point or trailing zeros, they are all added by the AR8600 microprocessor.

Example of ‘MHz round number’ frequency entry for 808.000 MHz

While keying in frequency data, the bottom line of the LCD displays “FREQ SET” to indicate what sort of data input the AR8600 is expecting. Similar helpful messages are displayed at other times during data input.

Example of frequency entry 954 kHz (0.954 MHz)

The frequency of 954 kHz is equivalent to 0.954 MHz. When entering frequencies below 1 MHz, there is no need to proceed the decimal point with a zero as this is added by the microprocessor during

frequency entry then removed when the key is pushed to ensure the display appears neat and tidy.

You will note that frequencies below 3.0 MHz (3000 kHz) will be automatically displayed in kiloHertz format (the letter “k” will be displayed to the right of the frequency readout) and the decimal point

Section 3-3, 3-4, 3-5

displayed to the right of the kHz position. This is to ensure easy recognition of short wave frequencies which are often listed as ‘kHz’ in frequency guides.

If an attempt is made to enter an ‘out of range’ or invalid frequency (such as 2345 MHz or 0.09 MHz) the error beep will sound (if beep is enabled) and the LCD returns to the previous frequency prior to frequency input. Acceptable input range is 0.1 MHz to 2040 MHz.

&Note: If you pause during frequency input for more than 90 seconds, the menu will time out

and the AR8600 will return to its previous task just as if the key had been operated.

Aborting frequency input

If for some reason you do not wish to complete the frequency data input, before completing the input sequence with

3-4 Correcting frequency input

Should an error be made while entering frequency data (by pressing the wrong numeric key), it may be corrected using the ð BACKSPACE facility. This facility enables rapid correction of errors prior to the completion of entry by the enter key.

Example of frequency data correction while keying 433.250 MHz

then

(as if you have made a mistake)

ð, the number “7” clears from the LCD

to finalise the correct entry.

3-5 Changing frequency using the ñ and ò keys

The ñ and ò keys provide a convenient method of frequency change. The speed at which the receiver steps up or down depends upon the STEP SIZE which is default to

AUTO. In AUTO the step size, receiver mode etc is taken from the factory pre-programmed band plan but may be overridden at any time.

Examples of tuning step include: 0.05 kHz (50 Hz), 0.1 kHz (100 Hz), 0.2 kHz (200 Hz), 0.5 kHz (500 Hz), 1.00 kHz, 2.00 kHz, 5.00 kHz, 6.25 kHz, 8.33 kHz, 9.00 kHz, 10.00 kHz, 12.50 kHz, 20 kHz, 25.00 kHz, 30 kHz, 50 kHz, 100.00 kHz. The tuning step size may also be programmed in multiples of 50 Hz (via the keypad) so that unusual step sizes other than stated are possible.

the ñ key to tune the receiver upward in whichever step size is selected, use the ò to tune the

receiver downward in frequency. You may and hold either key to continuously tune the receiver in whichever direction is desired, tuning will stop when the key is released.

Section 3-5, 3-6

&Note: When tuning, reception may occasionally be momentarily

interrupted while tuning and the “S” squelch legend will flash as tuning progresses, some noise may accompany tuning, this is normal.

Fast tuning

The ï and ð keys may be used to tune the receiver at a rate TEN TIMES FASTER than the selected step size. This means that when a step size of 25 kHz is selected, tuning will be in 250 kHz steps, this provides a convenient method to quickly tune up and down frequency bands.

&Note: Be aware that when auto-mode is selected and a tuning

step change has automatically taken place, one PUSH up or down may take several pushes to arrive back to the starting place again.

1 MHz tuning

While the “FUNC” legend is displayed (achieved by a of the key, again to deactivate as a toggle), the tuning rate for the ñ and ò keys is 1 MHz per increment.

3-6 Changing frequency using the main dial

While in VFO mode, the active VFO frequency may be ‘tuned’ in a similar way to a domestic receiver or other specialist receivers using the rotary tuning main dial which is mounted on the right hand side of the front panel. You may rotate the control between your fingers or place your thumb near the edge and rotate using a circular motion... use whatever is most comfortable.

This method of frequency selection is the most traditional approach to locating signals particularly on the short wave and medium wave bands. It provides an easy method to locate new or previously unknown frequencies or to check activity within certain frequency bands such as amateur or short wave broadcast. The rotary tuning main dial provides the very best ‘user interface’ with the AR8600 especially for USB, LSB and CW listening.

Rotating the main dial ‘clockwise’ increases frequency while

rotation ‘anti-clockwise’ decreases receive frequency .

The speed at which the main dial tunes the receiver depends upon the STEP SIZE which is default to AUTO. Examples of tuning step include: 0.05 kHz (50 Hz), 0.1 kHz (100 Hz), 0.2 kHz (200 Hz), 0.5 kHz (500 Hz), 1.00 kHz, 2.00 kHz, 5.00 kHz, 6.25 kHz, 8.33 kHz, 9.00 kHz, 10.00 kHz, 12.50 kHz, 20 kHz,

25.00 kHz, 30 kHz, 50 kHz, 100.00 kHz. The tuning step size may also be programmed in multiples of 50 Hz (via the keypad) so that unusual step sizes other than stated are possible.

While the “FUNC” legend is displayed (achieved by a of the key, again to deactivate as a toggle), the tuning rate for the main dial is TEN TIMES FASTER than the selected step

size. This means that when a step size of 10 kHz is selected, tuning will be in 100 kHz steps, this provides a convenient method to quickly tune up and down frequency bands.

Section 3-7, 3-7-1, 3-7-2

3-7 Changing receive mode

Due to the necessities of signal bandwidth, channel occupancy and transmission efficiency, different receive modes are used by various services. In addition to this the specification for tuning step and receive mode are allocated by departments of Governments following International discussions so are not consistent throughout the world. For this reason, it is necessary to change receive mode in order to monitor various transmissions.

For your convenience, receive mode and tuning step size have been pre-programmed into the AR8600 auto-mode bandplan data at the factory to simplify operation of the receiver, especially while you familiarise yourself with all the facilities. Should you wish, the defaults may be manually overridden at any time so that you may select an alternative receive mode and tuning step on any frequency.

3-7-1 Auto-mode selection

When auto-mode is in operation (so that receive mode and tuning step size are automatically selected for you by the AR8600 microprocessor), the reverse legend “AUT” is displayed toward the top right of the LCD.

To activate auto-mode or reconfirm its selection while in VFO mode,

Alternatively “AUTO” may be selected from the “MODE SET” menu accessed with the key sequence

The key acts as a short cut to “AUTO”, alternatively use the main dial or ï ð keys. When the reverse “AUTO” legend has

been selected, to accept the data input. The LCD will revert to VFO mode with the “AUT” legend confirming selection.

&Note: Auto-mode is cancelled as soon as the receive mode, tuning step or other

related data is changed. Remember that auto-STEP and auto-MODE are linked, reselect AUTO-MODE if either have been adjusted and you require the auto bandplan selection.

3-7-2 Receive mode selection menu

Any receive mode may be selected at any frequency within the receiver’s frequency coverage. To access the receive mode menu , the following modes are

available: AUTO, WFM, NFM, SFM, WAM, AM, SAM, USB, LSB, CW. Use the main dial or ï ð ñ ò keys to make selection, the key acts as a short cut to “AUTO”. To accept the selection

As a further short cut to AUTO MODE, . The reverse LCD legend “AUT” confirms selection.

Section 3-7-2

With regard to receive mode, generally speaking the following modes will apply:

AUTO

Receive mode and tuning step will be selected automatically using the pre-programmed auto bandplan data.

WFM Wide band Frequency Modulation - used by VHF and UHF broadcast stations as excellent audio quality

is available due to the relatively wide frequency bandwidth employed. Used only for local services such as VHF Band-II stereo (received as mono on the AR8600) and UHF TV sound channels.

When listening in VERY strong signal locations especially when using an external aerial, adjacent channel interference may be observed due to the wide nature of the IF filters. Should interference be encountered, use the attenuator to reduce signal strength or swap to the standard telescopic whip aerial.

NFM Narrow band Frequency Modulation - this provides high quality communication for relatively short

distance operation. NFM uses a greater frequency bandwidth than other point-to-point modes such as SSB so is less efficient.

NFM is the most common mode used above 30 MHz with the exception of the airbands (which use AM). NFM is widely used on the VHF bands: VHF Marine band, 2m amateur Band (145MHz), 70cm amateur band (433 MHz), PMR (Private Mobile Radio) and utilities.

In the absence of a signal, the background white noise may appear quite loud. For ease of listening the squelch control should be rotated clockwise until the background noise just disappears, this should be carried out when no signal is present. The point where the background noise is cancelled is known as ‘threshold point’. Do not advance the squelch control more than necessary or the receiver will appear to be desensitised and weaker signals will be missed.

SFM Super Narrow band Frequency Modulation - this mode is specific to the AR8600. Essentially this is the

same mode as NFM but uses a narrower IF filter for added selectivity when monitoring crowded bands such as PMR utilities.

WAM Wide Amplitude Modulation - this mode is specific to the AR8600. It is essentially the same as AM but

uses a wider IF filter, particularly useful for monitoring parasitic airband transmissions when ‘repeater transmissions’ are employed. Provides good broadcast quality for MW (medium wave band) listening to strong local signals when adjacent channel transmissions are not encountered.

AM Amplitude Modulation - Used by broadcast services throughout the world on medium wave and short

wave. AM is also used by VHF civil airband, UHF military airband and some PMR (Private Mobile Radio) and utility services.

NAM Narrow Amplitude Modulation - this mode is specific to the AR8600. It is essentially the same as AM

but uses a narrower IF filter for added selectivity when monitoring crowded bands such as short wave. Due to the narrower bandwidth employed, the audio quality will be compromised.

USB Upper Side Band - is a form of Single Side Band (SSB). USB is used commercially and by radio

amateurs on frequencies above 10 MHz (below 10 MHz radio amateurs tend to use LSB to assist the separation of commercial and amateur users on traditionally shared bands, this prevents them from attempting to communicate with each other… which is prohibited).

+ 113 hidden pages

AOR AR8600 Operating Manual

Specifications and Main Features

Frequently Asked Questions

User Manual