Kenwood TH-26A User Manual

144MHz FM TRANSCEIVER

TH-26A/26AT/26E

VHF FM TRANSCEIVER

TH-26A

430MHz FM TRANSCEIVER

TH-46A/46E

440MHz FM TRANSCEIVER

TH-46AT

UHF FM TRANSCEIVER

TH-46A

INSTRUCTION MANUAL

KENWOOD CORPORATION

©PRINTED IN JAPAN B50-8339-00(K,M,P,T,W,X)(T)

90/12 11 10 987654321 89/12

Thank you for purchasing this new transceiver.

IMPORTANT Please read this instruction manual carefully before placing your transceiver in service.

SAVE THIS INSTRUCTION MANUAL.

The following explicit definitions apply in this manual: NOTE : If disregarded, inconvenience only, no

risk of equipment damage or personal injury.

CAUTION : Equipment damage may occur, but not

personal injury.

This Instruction Manual covers the following models:

TH-26A : 144MHz FM (VHF FM) transceiver without

DTMF Pad. TH-26AT : 144MHz FM transceiver with DTMF Pad. TH-26E : 144MHz FM transceiver. TH-46A : 430MHz FM (UHF FM) transceiver without

DTMF Pad. TH-46AT : 440MHz FM transceiver with DTMF Pad. TH-46E : 430MHz FM transceiver.

Attempting service or alignment without factory authorization can void the transceiver’s warranty.

CAUTION Long transmissions or extended operation in the HI power mode might cause the rear of this transceiver to get warm. Do not place the transceiver where the heat sink (rear panel) might come in contact with plastic or vinyl surfaces. Use of an external antenna for fixed station is recommended.

FCC WARNING This equipment may generate or use radio frequency energy. Changes or modifications to this equipment may cause harmful interference unless the modifications are expressly approved in the

instruction manual. The user could lose the authority to operate this equipment if an unauthorized change or modification is made.

Under normal circumstances, the transceiver will operate in accordance with these operating instructions. The transceiver has been adjusted at the factory and should only be readjusted by a qualified technician with proper test equipment.

CONTENTS

1. BEFORE OPERATION ......................................................................... 4

2. SPECIFICATIONS AND ACCESSORIES

3. BAHERY PACK

4. OPERATION

OPERATING CONTROLS ................................................................. 12

RECEIVER OPERATION ................................................................... 19

TRANSMIHER OPERATION MEMORY Microprocessor Memory back-up Microprocessor Initialization Memory Contents Memory Entry Memory Channel Recall Memory Shift Clearing a Memory Channel Automatic Memory Initialization

SCAN ................................................................................................. 28

REPEATER OPERATIONS ................................................................. 32

Transmitter Offsets Reverse Function Tone and CTCSS operation Autopatch Operations

CHANNEL DISPLAY MODE .............................................................. 35

TONE ALERT SYSTEM ...................................................................... 36

BAHERY SAVER ................................................................................ 36

AUTOMATIC POWER OFF ............................................................... 37

DTMF MEMORY FUNCTION ........................................................... 38

DTSS (Dual Tone Squelch System)

5. BLOCK DIAGRAM ....................................................................... insert

....................................................................................

............................................................

.........................................................................................

...............................................

................................................

SCHEMATIC DIAGRAM ............................................................. insert

6. MAINTENANCE ............................................................................... 42

6 9

7. OPTIONAL ACCESSORIES ................................................................ 44

1. BEFORE OPERATION

TO PREVENT ELECTRIC SHOCK, FIRE AND OTHER INJURY. PLEASE NOTE THE FOLLOWING:

Do not place this unit, where it will be exposed to direct

sunlight or cióse to heating appliances.

Do not place anything on top of the cabinet.

Do not place the unit in areas of excessive dust, high humidity or on unstable surfaces.

Do not drop pieces of metal, needles, coins and other electrically conductive materials into the unit.

If an abnormal odor or smoke is detected, immediately turn the power off. Contact the KENWOOD service station or your dealer.

CLEANING

1. Turn the power off, before cleaning the unit.

2. Do not use any type of abrasive pad, thinner, benzine or any substances which may damage the unit.

3. Wipe the front panel and other exterior surfaces of the unit with a soft dry cloth or a soft cloth lightly moistened with water.

*ott/ooo

2. SPECIFICATIONS AND ACCESSORIES 2-1. SPECIFICATIONS

FREQUENCY RANGE

MODE

MEMORY CHANNELS

ANTENNA IMPEDANCE

POWER

«E GC LU

REQUIREMENT

z UJ

C D

CURRENT DRAIN

GROUND

TH-26A/26AT/26E

U.S.A. version

European and U.K. version

Others

External power supply

Battery terminal

13.8 V (Ext. power supply)

7.2 V (Battery) Approx. 1.0 A

LO transmit mode

EL transmit mode

RECEIVE mode with no signal

BAHERY SAVER mode

AUTOMATIC POWER OFF mode

144 — 148 MHz

144 —146 MHz

144 — 148 MHz

20+1 (Call Channel)

6 —16VDC (13.8 VDC nominal)

Less than 1.5 A

Approx. 0.5 A

Approx. 0.12 A

Approx. 55 mA

TH-46A/46AT/46E

438 - 450 MHz

430 — 440 MHz

or 438 - 450 MHz

F3E (FM)

50 il

5 —15VDC

Less than 2.0 A

Approx. 1.0 A

Approx. 0.6 A

Approx. 0.15 A

Approx. 65 mA

Approx. 17 mA

Approx. 6 mA

Negative

DIMENSIONS (WXHXD)

<a:

WEIGHT

OPERATING TEMPERATURE

MICROPHONE IMPEDANCE

OUTPUT POWER

1—

»—

CO z <r

MODULATION

oc 1—

MAXIMUM FREQUENCY DEVIATION

SPURIOUS RADIATION

DUTY CYCLE OPERATION

CIRCUITRY

INTERMEDIATE FREQUENCY

SENSITIVITY

SQUELCH SENSITIVITY

SELECTIVITY

Projections not included

Projections included

With NiCd Battery and Antenna

13.8 V (Ext. power supply)

7.2 V (Battery)

1st IF

2nd IF

12dB SINAD

-6dB

-40 dB

TH-26A/26AT/26E TH-46A/46AT/46E

58X135.5X29.5 mm (2-9/32”x5-11/32”Xl-5/32")

68.5X147.5X34 mm (2-11/16"X5-13/16”Xl-11/32”)

380 g (0.84 lbs)

-20 °C ~ -F60 °C (-4 T ~ 140 °F)

2kn

More than 5W

Approx. 2.5 W

Approx. 2 W

Approx. 0.5 W

Approx. 20 mW

REACTANCE

±5 kHz

Less than — 60dB

1 minute transmission 3 minutes reception recommended

DOUBLE CONVERSION SUPERHETERODYNE

16.9 MHz

455 kHz

Less than 0.18 jj\J

30.825 MHz

455 kHz

Less than 0.18/¿V

Less than 0.1 //V

More than 12 kHz

Less than 28 kHz

TH-26A/26AT/26E

LU QC

AUDIO OUTPUT POWER (across 8i2 load 10%

C3 kU UJ >

distortion)

c c

More than 200 mW

Note Circuit and ratings are subject to change without notice, due to development in technology.

2-2. ACCESSORIES

Unpack your transceiver carefully and confirm that the accessories listed below are included in the box.

TH-46A/46AT/46E

1. Antenna ........................................................................................

for 144MHz or for 430/440MHZ

2. Belt Hook

3. Battery Case BT-6 (TH-26A M and M2 type only)

4. Hand Strap

5. Battery (Except TH-26A M and M2 type) NiCd battery pack PB-10

.............................................................

.........................

..............

.........................

................

T90-0407-05 T90-0406-05 J29-0424-04

J69-0312-04

....................................

W09-0535-05

..........................

.......................

..........................

6. Battery Charger .............................................................................. 1

for U.S.A. and Canada version (120V) for Europe version (220V)

....................

...................

W09-0315-XX

W09-0317-XX

After unpacking

Shipping container;

Save the boxes and packing in the event your unit needs to be transported for remote operation, maintenance, or service.

for U.K. version (240V) for Oceania version (240V)

........................

.................

W09-0318-XX

W09-0522-XX for Other market (120 / 230V) (TH-26A M3 and M4 type, TH-46A M and M2 type only)

7. Label

8. Bottom Cover BM-1

................................................

.......................

..................

W09-0534-XX B42-3391-04 1 F07-0896-03 1

9. AC plug (TH-26A M3 and M4 type, TH-46A M and M2 type only)

........................................

E19-0254-05 1

10. Warranty Card (U.S.A., Canada, and European

version only) ................................................................................ 1

11. Instruction Manual ...................... B50-8339-XX

...........................

3. BATTERY PACK 3-1. NiCd BAHERY PACK (PB-10)

This battery pack has not been charged at the factory in order to provide you m\h the greatest number of charge / discharge cycles. You must charge the battery before use. The battery pack will require several charge / discharge cycles before you can expect to see the maximum operating period between charges. If the

battery will be stored for greater than 2 months it

should be recharged before use. ^ Adapter

3-2. RECHARGING

1. Slide the adapter onto the NiCd battery pack.

2. Plug the supplied charger into an AC outlet.

3. Do not allow the battery to charge for greater than 15 hours. The useful life and battery performance will be reduced if you exceed the recom mended charge period.

Note Recharging should be performed within an ambient temperature range of between 5°C ~ 40°C (41°F ~ 104T). Recharging the battery outside of this range may not allow the battery to reach full charge.

3-3. MANGANESE or ALKALINE

BAHERIES

(Optional Battery Case BT-6)

Install 6 X R6 (AA) manganese or alkaline batteries in the bat tery holder. Pay close attention the battery polarities marked in the holder. We recommend the use of high performance manganese batteries for the greatest operating time.

Note Do not install NiCd batteries and attempt to charge them with the supplied charger. There is no battery protection circuit in the battery holder.

Press down on the hook in the middle of the battery case top to open.

Hook

Kit

to AC outlet

BC-9

3-4. INSTALLING THE BATTERY PACK

Align the grooves in the bat- Release button tery pack with the transceiver and slide the pack to the right until it locks in place. To remove the - battery pack push up on the RELEASE button and slide the pack to the left.

3-5. BATTERY VOLTAGE LEVEL METER

The S meter indicates the relative battery voltage dur ing transmit. Recharge or replace the batteries when the level reaches the low indicator.

Manganese or Alkaline batteries

Model V mAh

PB-11

PB-5

PB-6

PB-9

PB-10

PB-7

PB-8

PB-11

6 1200

7.2

200

600

1100

600

NiCd Battery Pack

Full charged

The ON AIR indicator will not light.

■■■■■■■ ■■III

Fully discharged

New batteries

________________

.-nrir-r-T

Approximate battery condition

Need to replace

3-6. OPERATING TIME

We recommend use of the NiCd battery pack for long transmission or extended operation. Manganese batteries (except Alkaiine manganese bat tery) are suitable only for LOW or Economic Low power transmission.

OPERATING TIME (hours)

TH-26A/26AT/26E

MODEL V PB-8x 11 PB-7 PB-6, 9, 10 PB-5 PB-11

7.2

mAh

600

1100

600 200

1200

High power

4 7.5 15

8.5 5

1.5 2.5 5 1.5

Low power

7.5 15 4

15 30

6 seconds transmission, 6 seconds reception, 48 seconds reception with no signal recommended. BATTERY SAVER function ON.

Economic

Low power

High power Low power

TH-46A/46AT/46E

3.5

7.5 13

2.5

9.5 14

Economic

Low power

14 27 14

4.5 29

4. OPERATION 4-1. OPERATING CONTROLS

®Antenna connector Connect the antenna that is supplied to this connector. Twist to lock.

^Volume control / Power switch The volume control and power switch are combined. Rotating the control clockwise will turn ON the transceiver. Advancing the control further clockwise will increase the volume.

(DSQL control This control is used to select the desired Squelch threshold level.

®MHz key This key is used to select the tuning rate of the Tuning control. When the MHz indicator is lit, the Tuning

control will cause the transceiver to increase or decrease in 1 MHz steps.

Press and hold the key for longer than 1 second to initiate MHz scan. Pressing the key after scan has been initiated will cause scan to stop.

Pressing the key within 10 seconds of pressing the F key will allow you to change the frequency step.

Turn the power on while pressing this key to initiate the Automatic Memory Initialization. Automatic storage will then begin from the frequency that appeared in the display before the power was turned off. See section 4-4-8 for additional information on this function.

(DVFO key This key is used to return to VFO operation after operating in the memory channel or CALL channel mode. The Tuning control will increase or decrease frequency in accordance with the VFO indicator.

Press and hold the key for longer than 1 second to initiate VFO scan. Pressing the key after scan has been initiated will cause scan to stop.

Pressing the key within 10 seconds of pressing the F key will copy the memory channel or call channel data to the VFO. This allows you to change parameters or that channel without actually changing the data that has been stored in memory.

Pressing the F key for longer than 1 second and then pressing the VFO key will initiate VFO or Memory scan. Pressing the key after scan has been initiated will cause scan to stop.

If you press and hold the VFO key while you turn on the POWER switch you will reset the microprocessor’s VFO memory, without destroying the memory channel or call channel data.

(DMR key This key is used to the select MR (Memory Recall) mode from the VFO mode. The Tuning control can then be used to select the desired memory channel.

Press and hold the key for longer than 1 second to initiate memory channel scan. Pressing the key after scan has been initiated will cause scan to stop.

Pressing the key within 10 seconds of pressing the F key

will store the displayed data into memory.

In the memory channel mode pressing the F key for longer than 1 second and then pressing the MR key will cause the memory channel to be skipped during memory channel scan.

If you press and hold this key while you turn on the POWER switch you will clear all the memory channels.

0CALL key Press this key to activate the call channel function.

Press and hold the key for longer than 1 second to initiate call channel scan. Pressing the key after scan has been initiated will cause scan to stop.

Pressing the key within 10 seconds of pressing the F key will store the displayed data into call channel.

Pressing the F key for longer than 1 second and then pressing the CALL key will initiate V / M / C scan. See section 4-5-9 for additional information on this function. Pressing the key after scan has been initiated will cause scan to stop.

If you press and hold this key while you turn on the POWER switch you will be able to turn the AUTOMATIC POWER OFF function ON or OFF.

(DON AIR indicator ON whenever the transceiver is in the transmit mode.

(DT.ALT key This key is used to activate the Tone Alert function.

Pressing the key within 10 seconds of pressing the F key

will turn the BEEP function OFF or ON.

Pressing the F key for longer than 1 second and then pressing the T.ALT key will cause radio to toggle the hold / resume mode between Time Operated scan and Carrier Operated scan.

If you press and hold this key while you turn on the POWER switch you will be able to turn the BATTERY SAVER function ON or OFF.

(g)Tuning control Rotate this control clockwise to increase the frequency and counterclockwise to decrease the frequency. This control is also used to select the desired memory channel and the scan direction.

LCD display

Displays the selected transmitter offset direction. When neither indicator is ON the transceiver is in the Simplex

mode. When both indicators are ON the transceiver is in the Split Channel mode. (D R indicator

This indicator is ON when the Reverse function is on. (DDTSS indicator This indicator is ON when the DTSS function is active.

(DCTCSS indicator

T: This indicator is ON when the Tone Encode

function is active.

CTCSS: This indicator is ON when the Tone Decode

function is active. (DT. ALT indicator This indicator is ON when the Tone Alert system is active. The indicator will flash when a signal is received. (DMemory channel indicator This indicator is used to show the selected memory channel number. ®Memory indicator This indicator lights during Memory Recall mode, and flashes during Memory entry. d)F indicator

ON whenever the F key has been depressed. (!)★ indicator This indicator is ON when the displayed memory

channel will be skipped during memory scan

operations.

(0)500 Hz dot This indicator show 500 Hz.

©Hz dot

This indicator lights during CTCSS frequency selection,

and is used to show the 1 Hz digit.

This indicator is also ON when the Battery Saver and

Automatic Power Off function have been canceled.

0)VFO indicator This indicator lights during VFO operation.

(§) ■■■■■■■■■■■■

Used to indicate the relative receive signal strength, or as an indication of the battery voltage level during transmit.

®MHz dot

This indicator flashes during scan operations.

®MHz indicator

This indicator flashes during MHz tuning steps.

ON whenever there is a signal open the squelch, or when the and the CTCSS key is OFF.

(g)APO indicator

This indicator is ON when the Auto Power Off function

is active.

@8 indicator

This indicator is ON when the Battery Saver function is

active.

Displays the operating frequency to the nearest kHz.

present strong enough to

squelch is not activated.

0MONI switch When operating in the CTCSS (Tone Squelch) mode you can use this key to determine if the frequency is in use before transmitting. Pressing this key will disable the CTCSS function as long as the key is held depressed.

If you press and hold this key while you turn on the POWER switch you will change to channel display or frequency display.

(DPTT (Push To Talk) switch

Press this switch whenever you wish to transmit.

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