Page 1
Ameritron ALS-1300
1200-watt
NO TUNE
TMOS-FET AMPLIFIER
The Ameritron ALS-1300 is 160 through 15-meter amateur radio band 1200-watt output solid-state amplifier. It
uses eight 50-volt conservatively rated linear RF MOSFETS. 50-volt linear FET’s designed for transmitting
service produce an exceptionally clean signal compared to other solid-state amplifiers. Fan speed is regulated by
temperature sensors; assuring conservative cooling with minimum noise.
Nominal driving power is 90 watts for 1200-watts output (approximately 11 dB gain) on most bands. The
compact 10” wide by 6-1/2” high amplifier package (depth only 18”) fits nearly any station configuration. The
attractive desk-top amplifier unit weighs only 22 pounds.
An external 50-volt 50-ampere regulated power supply powers the ALS-1300. The supply is wired for 230
VAC (200-260 VAC, 50-60 Hz, 15 amperes), but can be rewired for 120 VAC operation for lighter duty
operation.
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Table of Contents
TABLE OF CONTENTS .......................................................................................................................2
AMPLIFIER FEATURES ...................................................................................................................... 3
POWER SUPPLY .................................................................................................................................4
Power Line Requirements ..................................................................................................................................................................... 4
Power Supply Features..........................................................................................................................................................................4
Power Supply Location ......................................................................................................................................................................... 4
GENERAL INFORMATION ..................................................................................................................5
Amplifier...............................................................................................................................................................................................5
Power Supply ........................................................................................................................................................................................ 5
INSTALLATION....................................................................................................................................5
Airflow.................................................................................................................................................................................................. 6
INTERCONNECTION WIRING.............................................................................................................7
AMPLIFIER REAR PANEL .................................................................................................................. 8
FRONT PANEL ....................................................................................................................................9
OPERATION.......................................................................................................................................10
MARS OR CAP OPERATION ............................................................................................................ 10
INITIAL OPERATION ......................................................................................................................... 11
CIRCUIT BOARDS.............................................................................................................................12
CB-1.................................................................................................................................................................................................... 12
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Amplifier Features
This amplifier provides the following standard features:
Eight conservatively rated, very linear, 50-volt MOSFET transistors
Operational in a few seconds, no long filament warm-up time
Clean layout with easy-to-service modular construction
Front panel indicators including wrong band and other fault errors
Quiet variable-speed forced air cooling system
Power module balance metering
Power module current and voltage metering with LED illumination
PEP forward output power and PEP reflected output power metering
Reflected power protection
Bandswitch error protection
Standard negative going ALC output with front panel adjustment control
ALC metering and an ALC LED indicator
Fully regulated external power supply
Compact size 17.5” deep x 7” high x 10.5” wide
Weight amplifier section 23 pounds
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Power Supply
The power supply for the ALS-1300 is a voltage regulated current limited supply. It contains 14-volt positive
and negative supplies as well as dual 50-volt 25-ampere continuous (30-ampere peak) fully current limited
supplies. Each PA (power amplifier) module in the ALS-1300 operates from the separate 50-volt sources,
giving a total dc input power rating of 2500 watts to the power amplifier modules.
Power supply to amplifier interconnections are through a heavy-duty cable using a large Cinch Jones connector.
Power Line Requirements
This amplifier ships wired for 200-260 Vac. The maximum average power line current is 12 amperes at 240
volts. Two 250-volt 15-ampere fuses fuse the power line.
Note: 120-volt power mains operation is possible with a reduction in CW or RTTY power. Because average
power is very low, SSB operation is unaffected by 120 volt operation. Fuse size would be 25 amperes
maximum.
Power Supply Features
Efficient operation from 200-260 volts ac (12 amperes minimum) and 100-135 volts (20 amperes
minimum)
Wide range of power line frequencies, 40-400 Hz
Fully regulated current-limited outputs
Step-start to limit stress on power supply components
Exceptional filtering and RFI suppression
Compact light-weight design
Power Supply Location
Locate the power supply in a convenient ventilated area near the amplifier location. Do not place the power
supply next to sensitive equipment like audio processors, transceivers, or microphones. For safety ground the
wing nut stud on the supply rear to the station ground buss. The station ground buss should comply with
national electrical codes. These codes dictate that station grounds must be bonded to the power mains entrance
ground. A station ground that is not bonded to the mains ground does not offer lightning protection!
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General Information
Amplifier
The Ameritron ALS-1300 is a solid-state 1200-watt nominal RF output power 1.8-22 MHz amplifier. This
power is peak envelope power, which is the same as actual carrier power on CW. It uses eight exceptionally
very low distortion push-pull parallel MRF-150 or equivalent RF power TMOS transistors. The ALS-1300
meets or exceeds all FCC rules governing amateur radio external power amplifiers.
Two temperature sensors on each PA (power amplifier) module, with bias tracking FET temperature and fan
speed tracking heatsink temperature, control bias and fan speed.
Harmonic suppression comes from push-pull operation of linear devices, and a series of high quality 5-pole
low-pass filters. This amplifier exceeds all FCC mandated harmonic restrictions.
Antenna switching is through a sequenced pair of miniature relays on a plug in board. Relay switching time is
approximately five milliseconds. This amplifier’s “relay” jack sources 12 volts when open circuit, and the relay
jack current upon closure is less than 20 mA.
This amplifier includes two dual-movement cross-needle meters. This is the equivalent of having four panel
meters. The left hand meter is a dual power amplifier current meter. The right hand meter continuously displays
forward RF peak envelope power on one dedicated scale, while the second movement in the right hand meter
switches between reflected power, combiner mismatch voltage, ALC, and each power amplifier’s voltages.
While this amplifier will run more than 1200 watts PEP output, linearity will suffer. Ameritron recommends
running 1200 watts peak power for maximum linearity, at which point this amplifier will have comparable IM
performance to the best vacuum tube linear amplifiers. The characteristics of linear high-voltage FET’s are very
much like those of triode vacuum tubes.
Power Supply
The ALS-1300 has an external power supply. This power supply normally operates from 200-260 volts at 50400 Hz. It connects to the amplifier through a single cable. The power supply should be located in a cool spot
away from sensitive audio systems or cables.
Installation
Please look your amplifier and power supply over carefully. Observe the air inlet and outlet ventilation holes.
Locate the air inlet and outlet areas of the amplifier. Facing the amplifier front panel, the cooling air inlet is on
the right side. The warm air outlet is on the left side of the amplifier as viewed from the normal operating
position (front view). While the outlet air won’t be particularly warm, it is never a good idea to have it blow
into heat sensitive equipment such as transceivers or other power amplifiers. Have the same consideration for
your new amplifier and power supply. Be sure the air inlet temperature isn’t substantially above normal room
temperature. Ideally the air inlet should be kept below 32° C or 90° F, although temperatures up to 41° C or
106° F are permissible. If ambient temperatures exceed these limits it might become necessary to reduce duty
cycle or power.
Warning: Do not block cooling air inlets and outlets!
Never expose the amplifier to water or mist.
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Airflow
The amplifier must have a clear area to the sides and top for proper airflow, and to the rear for interconnection
wiring. It is especially important to avoid obstructions that block the air inlet on the top left and both lower
sides. Two inches clearance is normally adequate for full ventilation. Keep any papers or loose objects that
might impede airflow away from the air inlets and outlets.
Locate the amplifier and power supply away from sensitive equipment such as microphones, audio processing
equipment, or low level audio or radio frequency amplifiers. Generally the best location for the power supply is
below the operating desk and away from antenna feedlines. This will keep fan noise and any RF coupling to a
minimum.
The power supply is factory wired for 200-260 Vac. It uses a standard NEMA-6-15P 15-ampere 240-volt plug.
The round center pin is the safety ground. Do not remove the safety ground.
CAUTION! Before connecting the power supply to an electrical outlet, always be sure you have completed the
following four steps:
1. Insert the 15-ampere 250V fuses into the two black fuse caps.
2. Insert the fuse and cap assemblies into the power supply’s fuse holders. The fuses lock in place
with a slight turn.
3. Connect the power supply to the amplifier.
4. Be sure the amplifier power switch is turned off.
Caution! Fuses have both voltage and current ratings. Use only 250V rated
fuses in this device. The voltage rating generally is marked on fuses. DO NOT
use automotive-type low voltage fuses in any power line application. For 240volt operation 15-ampere fast blow fuses are required.
Warning: Never insert the power supply cord into the outlet unless the above
four steps have been completed!!
Position the amplifier at the desired location on your operating desk, position it so you have access to the rear
panel, and connect the rear panel cables. Do not connect the power mains at this time!
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Interconnection Wiring
INTERCONNECTIONS
POWER SUPPLY
ANTENNA,
ANTENNA
TUNERS,
SWITCHES,
FILTE RS
OUT
RLY
ALC
ALC
RLY
ANT
FUSE
FUSE
IN
ALS - 1300
REMOTE
B
A
TRANSMITTER / TRANSCEIVER
Figure 1 Interconnections
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Amplifier Rear Panel
PWR SUPPLY To prevent connecting the power plug wrong, the large black multi-pin connector is
indexed by the offset in two round pins. One round index hole is closer to the outer connector edge. Mate
the round pins and holes and seat the male plug fully onto the amplifier rear panel pins.
ALC Optional connection. Connects to radio ALC input. Mandatory if using a radio over 100 watts.
RLY Connect to radio amplifier keying line. Radio must pull this line below 2 volts to transmit.
GND Connect to station ground buss. This connection is for safety.
IN Connect through good 50-ohm coaxial cable to radio’s antenna output connector. This can be a smaller
cable like RG-58/U.
OUT To 50-ohm antenna, antenna tuner, power meter. This is the high power output. 50-ohm coaxial cable must
safely handle 1200-watts.
1.) Connect the station electrical safety ground to the rear panel wing nuts. National safety codes require the
station ground be bonded to the power mains safety ground at the building entrance.
2.) Connect the power supply to the amplifier.
3.) Connect the RLY line to the transceiver’s accessory RELAY or XMT port. This port must pull low for
transmit, and be open circuit when receiving. Relay control voltage from the ALS-1300 is 12 volts
positive with only 15 mA current. You should always check your transceiver’s manual, but almost any
standard transceiver directly interfaces to this amplifier.
4.) Connect the OUT (output) port to the appropriate point in your station. This is the high power RF output
cable. This connection would go to your 1500-watt rated Power/SWR meter, antenna, or antenna
matching device. Good quality Mini-8 or RG-8X cables are acceptable for anything but RTTY use,
although larger RG-8 style cables are normally preferred. Your antenna matching system must connect
to this port.
5.) Connect the IN connector to your transceiver. Do not install any active antenna matching devices on this
port. In general the shortest and most direct cable connection is best, although high quality cables can be
very long without adverse effect on performance. RG-58/U or Mini-8 (RG-8X) style cables are
acceptable. You should never use a tuner of any type on the amplifier input, nor should you drive this
amplifier with over 100 watts peak envelope power. Never use a non-FCC accepted device with this
amplifier.
6.) The ALC line is optional. In general the internal ALC in the transceiver is all that is needed. The ALC
monitors the RF output power and reflected power supplied by the ALS-1300 to the load.
7.) Operate the bandswitch manually during initial testing. Do not connect band decoders or computer
interfaces until initial tests are completed.
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Front Panel
Figure 2 Amplifier Front
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Operation
This amplifier is very simple to operate. Once you have established proper connections please set the amplifier
(Fig. 2, ref 3) to one of the following bands:
Band Frequency Range Notes
160 1.8 - 2.1 MHz
80 3.2 - 4.2 MHz
40 6.0 - 7.5 MHz
30 7.5 - 14.0 MHz Operation locked out in domestic model. Export Only.
20 13.5 – 14.5 MHz
17 14.5 – 19.0 MHz
15 19.0 – 22.0 MHz
12 22.0 – 25.0 MHz Operation locked out in domestic model. Export Only.
10 28.0 – 30.0 MHz Operation locked out in domestic model. Export Only.
Caution: This amplifier is not suitable for 27 MHz. Damage to expensive components such as power amplifier
transistors will occur if attempts are made to use this amplifier in the 25-28 MHz frequency range.
MARS or CAP Operation
For licensed amateur radio operators participating in Military Affiliate Radio Systems, this amplifier is suitable
for MARS and CAP operation on all frequencies between 1.8 and 22 MHz with some precautions. The upper
frequency limits are in bold type in the table above. Do not operate above the bold-type frequency limits in the
table above or PA (power amplifier) damage may occur. It is permissible to operate below those limits if you
provide additional external harmonic suppression for authorized services such as MARS and CAP.
When operated outside the frequency limits above, harmonic suppression might not meet acceptable limits. You
may have to use additional external 2nd harmonic filtering. Ameritron guarantees to exceed FCC part 97.307
harmonic suppression standards only inside the frequency ranges listed above. Contact Ameritron with your
specific requirements. Ameritron requires proof of a valid MARS or CAP license as well as your own amateur
radio license for technical assistance.
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Initial Operation
Double check all wiring and connections (fig. 1) before turning power on. It always pays to be safe. If you are
sure you have connected your amplifier correctly, follow the procedures below. The following steps only need
to be done on an initial checkout:
1. Place the MULTIMETER switch (fig.2 ref 7) in the HV2 position. Place the ALC SET control (fig2.
ref 5) full clockwise (10 on scale).
2. With the STANDBY/OPERATE switch (fig.2 ref 8) on STANDBY, turn the power switch (ref 9) ON.
3. There will be a slightly delayed click from the power supply. HV2 (fig.2, ref 2) should immediately rise
to nearly full scale, and after a slight delay you should hear another click. The meters and BAND LEDS
(fig.2, ref 4) will light up.
4. The HV meter (fig.2, ref 2) should read between 45 and 55 volts.
5. Change the meter switch (fig.2 ref 7) to HV1. The voltage should be the same as in step 4.
6. Rotate the BAND switch (fig.2 ref 3) through all positions. For any model purchased in the USA, only
the 160, 80, 40, 20, 17, and 15-meter bands will actually operate.
7. Change the meter switch (ref 7) to REF. This will read reflected power.
8. With no modulation in the FM, AM, RTTY, or CW mode adjust your exciter power to low power,
around ten watts. This is to have a steady unmodulated carrier. Verify you have very low power, ideally
around 10 watts carrier (not critical), and that VSWR of the antenna system is low. You should see
almost no deflection on the reflected power scale (fig.1 ref 2). If you see reflected power deflection,
check your RF cables. Note: You cannot use a tuner in your radio or between your radio and this
amplifier to match the antenna system. Any antenna matching must be between the amplifier and
the antenna, and the antenna tuner must be safely able to handle at least 1200 watts of carrier or
peak envelope power.
9. Place the amplifier in OPERATE position (fig.2 ref 8). Be sure the BAND on the amplifier matches the
band selected on the transceiver.
10. Place the transmitter or transceiver into transmit in FM, AM, RTTY, or CW modes. The green TX LED
(fig.2 ref 6) should light. The forward power (fig.2 ref 2) should increase to approximately ten times the
initial reading, the reflected power should remain low, and the PA current should increase slightly on
both scales of the current meter (fig.2 ref 1). No other lights should illuminate.
11. Briefly increase power to 1200 watts output.
12. After you have verified all of this, the amplifier is ready to operate.
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Circuit Boards
There are 10 basic circuit boards plus two power amplifier modules in the ALS-1300. The text below gives a
brief description of each board’s function.
2KWF
The 2KWF is a high power low pass filter. It is the very large board with large toroid and a few air wound
inductors. This board contains filter SWR fault detection, power amplifier unbalance detection, and multiple
high power low pass 5-pole filters. Additionally two smaller boards, the antenna relay board RLY and the PA
combiner board CMB, attach directly to the low pass filter board.
BS1
The BS1 is located behind the BAND switch. It provides all band selection functions as well as band indicators.
CB1
The CB1 is located near the front of the amplifier just behind the meters. The CB1 control board provides most
control functions. This includes bias, fan speed, overload protection, and transmit-receive relay sequencing. It is
the hub for nearly all functions, including interfaces.
CMB
This board combines the outputs of two 600-watt PA modules. It is a traditional 50-ohm “magic T” combiner
with an output-matching transformer.
FL10
The FL10 is optional and only appears in export models. It enables ten meter and twelve-meter operation.
MB-1
The MB-1 is located behind the front panel below the meters. It contains peak-envelope-power detection
circuits, multi-meter switching, fault indicators, and ALC circuits. There are four power meter adjustments on
this board, two for calibration of forward and reflected power and two for forward and reflected peak hold time.
Shunts on a header located on the board’s upper edge adjust panel meter brightness.
PA Boards
PA boards are located on top of the heatsinks under the filter board shield panel. There are no user adjustments
on these boards.
PD8
The PD8 is located on the right side of the amplifier just above the panel containing the cooling fans. It contains
a power splitter and two 5 dB attenuator pads. The splitter and attenuator pads isolate the two power amplifiers
from each other, and terminate the PA inputs in 50 ohms over a wide range of frequencies. This is necessary to
stabilize the PA modules. Do not remove or bypass the attenuators.
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RJ45
The RJ45 board mounts on the rear panel. It contains two RJ-45 jacks for remote control interface.
RLY
The RLY board contains two transmit and receive relays, one for RF output switching and the other for RF
input switching. T/R relays activate with a low on terminals K (key) J1-3 and RJ1-7. The CB1 board contains
the relay timing controls.
SWR
The SWR board is on the rear panel in front of the RF output connector. It is a traditional 50-ohm directional
coupler. The null adjustment is accessible through a rear panel hole.
Schematics
Filter 2KWF
2KWF-1R1
PA B
1N 91 6
.0 01 uf
An t Rl y
PA I N
PA C om b O ut
PA A
Gi mm i k
T1
D1
C2 1
R1
1k
J2
J4
T2
R4
10 k
D2
1N 91 6
R3
1k
J3
C9 9
C2 8
27 0
R2
50
C2 9
.0 1
PA O ut Rl y
C9 8
10 pf
RL Y1
RL Y3
RL Y5
RL Y7
RL Y9
RL Y1 1
L1
16 T
C1
15 00
C5
68 0
C9
36 0
C1 3
27 0
C1 7
18 0
L3
11 T
L5
12 T
L7
8T
L9
6. 5T
C2
C3
15 00
15 00
C7
68 0C668 0
C1 1
C1 0
36 0
36 0
C1 5
27 0
C1 9
18 0
C1 4
27 0
C1 8
18 0
FL 10
FL 1 0 FL 1 0
L2
16 T
L4
11 T
12 T
6. 5T
L6
L8
8T
L1 0
081210
RL Y2
C4
15 00
RL Y4
C8
68 0
RL Y6
C1 2
36 0
RL Y8
C1 6
27 0
RL Y1 0
C2 0
18 0
RL Y1 2
RL Y1 1
RL Y3
RL Y5
RL Y7
RL Y9
RL Y1 1
12 VD C
RL Y2
RL Y4
RL Y1 0
RL Y1 2
RL Y6
RL Y8
C2 2
.1
.1
.1
C2 3
C2 4
.1
.1
.1
C2 5
C2 6
C2 7
J1
Gn d
16 0
80
40
20
15
10
Gn d
RA DI O
Figure 3
rev 03 Mar 2009
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Bandswitch BS1
J1
G
160
80
40
20
15
10
12V
+12 V
Remote
J3
G
160
80
40
20
15
10
12V
+12 V
BS - 1
J2
D1
1N4 0 0 1
D2
1N4 0 0 1
D3
1N4 0 0 1
D4
1N4 0 0 1
D5
1N4 0 0 1
D6
1N4 0 0 1
30
20
5
17
SW 1
rea r
vie w
LED 1
160
LE D 2
80
LED 3
80
2
40
3
4
160
1
+12 V
40
LED 4
30
R1
1k
/
LED 5
20
6
15
9
7
12
10
8
LED 6
17
LED 7
15
LED 8
12
LE D 9
10
Figure 4
7 July 2008
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Control Board CB1
R1
1k
ZD1
R59
10k
5.1 v
R1 0
100
R2
100R4
RL1 INP
C12
.0 1
R3
10 0
F1
1A
F2
1A
R17
1k
RL2 ANT
C11
.01
C2 4.1C23
.1
.01
.1
C4
C3
C1
.1 /50 v
DC1 2V
C2
.1/ 50 v
DC1 2V
.1
25k 4 0%
R9
10k
VR1 0
Swi tc he d
REA R
PAN EL
TO MB
J 1
FIL TER
STB Y
MIS C
J1
G
+
K
F
R
S
A
100
J5
G
+
F
R
T
P
S
A
CL
R11
100
R5
100
J2
G
CL
S
G
2
1
X
X
J6
G
S
S
X
X
C27
C2 6.1C25
.1
10 k
R5 8
R8
1k
C16
.1
DC 12V
U2p in 4
DC 12V
U1p in 4
R7
1k
U2p in 11
DC1 2V
5
6
3
2
12
13
U1p in 11
U1 B
7
U1 A
1
U1D
C6
.1
C7
.01 /5 0V
CB1 rev2.1 090227
8
404 2
U3
7
13
14
5CLK
16
R3 4
10 k
C34
C8
.1
R6
100 k
R14
R43
10k
.1
10
R41
10k
R32
10 k
10k
R3 9
U4p in 4
U4 pin 8
R21
6.8 k
C5
.01
47/ 50 v
1k
DC 12V
R5 2
1k
Bias A
Q1 0
390 4
100
DC1 2V
R1 9
Q5
29 55
RL1 INP
FAN
DC 12V
Q1 2
305 5
Bias SW
10R23
J4
GND
160
10
GND
J7
FA
+
FB
J3
160
BAND SWITC H
10
+
BAND
FILTE R
DC1 2V
R5 7
R36
2.2 k
R46
1k
R4 7
1k
1k 40 %
Q1
390 6
Q7
305 5
Q8
390 6
Bias B
VR 1
C36
.1
1k
C14
.01 /5 0v
RJ 1
RS
T
P
S
S
F
K
S
FET
305 5
R50
10K
HS
R2 8
10 0
D8
R2 6
4.7 K
C13
.1
C19
.1
C18
.1
Q6
Q9
390 6
Bias A
R5 1
4.7 k
Bias B
Q11
39 04
+
C31
.47
R5 5
10 0 R54
C28
.1
J8B
J8A
HS
FET
10
D3
11
1
C35
.1
Bias B
Bias A
C29
.1
D2
D4
D5
C9
.1
R33
4.7 k
4.7 k
47/ 50 v
C32
R12
10k
R38
10k
R31
4.7 k
R4 0
R42
4.7 k
+
1k 40 %
VR 4
R53
R15
10k
100
D7
R29
27k
R16
4.7 k
D6
C10
.0 1
R1 3
1k
R37
U2D
12
FAN
2. 2k
14
13
3
2
10
9
5
6
C2 1
+
.47
U2A
C2 0
+
.47
U2C
U2B
1k 40 %
R35
1k
FAN
R30
1
1k
8
R45
7
1k
R44
1k
1k 40 %
VR 2
VR3
D9
R27
4.7 K
C2 2
10 0
U4B
5
6
.47
DC1 2V
VR5
1k 40 %
R56
LM3 58
7
4.7 k
IN
LM3 58
3
2
C1 5
.4 7
R2 4
LM7 80 9
VR6
1k 40 %
U4A
R25
1
4. 7k
Q4
39 04
DC 12V
R18
R22
10
1k
R20
6.8 k
390 4
U5
OUT
R48
10K
VR7
1k 40 %
RL2 A NT
Q2
C30
VR8
1k 40 %
C37
.1
916
D10
C17
.1
R49
4.7 k
+
.4 7
29 55
+
C3 3
Q3
Figure 5
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Combiner 2000 watt CMB
CMB 081217 rev0a
50 OH MS
IN
50 OH MS
IN
Figure 6
Filter FL10
PA A
100
PA B
FL10 081210
L1
1
T6
L2
1
T5
50 OH MS
OUT
Ou t
In
Figure 7
C1
130 p F
C2
13 0 p F
C3
13 0 p F
C4
13 0 p F
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Page 17
Metering Board MB1
-12 V
R2 0
4.7 k
R1 8
C8
4. 7k
.0 1
D9
1N 91 6
R3 6
1k
R3 4
22 0K
Gn d
F w d
+
R e f
T
C
S
A
C L
CT RL
J1
-
-1 2V
C1 6
.1
10 k
R2 8
R1 2
-1 2V
10
R2 4
47 k
2N 39 04
C1 0
.1
10 k 10 %
Q2
R4 1
LE D3
R3 9
C6
.1
1k
D1
R2 6
56 0
ALC
C1 5
.1
U2 A
3
2
R3 3
22 0k
C1 1
.1
R2 3
47 k
2N 39 04
R3 5
10 0k
1
Q1
R4 0
1k
LE D2
8V
D7
D2
1N 91 6
R25
1k
LM 32 4
U1 A
3
2
R2 9
1k
C1 4
.1
R3 2
1k
4
11
1
R3 1
R2 2
1m
1k
R3 7
1N 91 6
1k
LE D1
FWD SPEED
R5
10 k
D1
C3
R6
1m
2. 2
+1 2
U2 B L M3 58
8
5
7
6
4
D3
R1 5
1m 4 0%
D3
+
D8
1N 91 6
R2 7
1N 91 6
1N9 16
5
6
1k
C7
.1
D2
U1 B
R1 7
4. 7k
D4
LE D4
R1 9
CAL
8V
7
R2
2. 5k 4 0%
8V
12
13
C9
.0 1
R2 1
10 0
10
MB1 Rev3
REF SPEED
R1 6
1m 4 0%
R9
10 k
R3
5. 6k
U1 D
C2
.1
14
R3 0
6. 8k
D4
1N 91 6
D6
1N 91 6
D5
1N 91 6
REF CAL
U1 C
10
8
9
6
R3 8
1
R
-
SW 1
R1
2. 5k 4 0%
12
V2
11
+
C
8
R
7
C1
R4
5. 6k
.1
C1 2
.1
V1
10
A
C1 3
9
.1
C5
.1
C1 7
.1
C4
+
R8
1M
2. 2u F
2
C
3
A
4
V1
5
V2
4.7 K
090227
PEAK METER / ALC
CTRL
J1
PIN 1. ..GND
2. ..12 -
3. ..12 +
4. ..F W D P W R
5. ..RF LCTD P W R
6. ..TRA NSM IT LED
7. ..CO MBINER LED
8. ..S W R LED
9. ..A LC VOLTA GE OUT
10.. .CO MB INER LVL
MULTI M ETER
R7
R10
10
68 K
R1 1
68 K
CURREN T
METER BRIGHTN ESS
R1 3
1k R14
1k
+1 2V+1 2V
MUL TI M ETE R
J 2
PIN 1. ..GND
2.. .FW D
J2
Gn d
F
+
L
G
J3
J4
3.. .M M -
4.. .M M +
5.. .LM P
6.. .GND
CURRE NT
J3
PIN 1. ..V2
2.. .V 2
3.. .V 1
4.. .V 1
ME TER B RIGHTNESS
J4
1,2 low
2,3 high
Figure 8
17
Page 18
PA Boards
NT C
CO NN
PAM-600
081 21 7 Re vis io n 0a
R4
Ye l
.1 uF
R1
R2
NT C
0
P1
Or g
0
PA I n
Re d
Br n
R318
C1
R1 018
C8
.1 uF
T1
C1 0
47 0p F
18
C1 2
.1 uF
18
R2 6
C1 8
.1 uF
C4
.1 uF
33 0p F
.1 uF
C1 1
C1 5
C5
.1 uF
1
R1 3
R1 4
R1 5 22
R1 6
R1 7
R1 8 22
1R1 9
C1 4
.1 uF
R1 11
R2 0
R2 71
R6
18
R8
18
22
22
22
22
R2 2
18
R2 4
18
R5
47 0
C6
.3 3u F
C7
.3 3u F
C1 6
.3 3u F
.3 3u F
R1 2
47 0
47 0
C1 7
R2 8
47 0
R2 1
C2
.0 01 uF
R7
1k
R9
1k
C9
.0 01 uF
C1 3
.0 01 uF
R2 3
1k
R2 5
C1 9
.0 01 uF
C3
Q1
Q2
Q3
1k
Q4
47 0p F
C2 0
47 0p F
X1
T2
C2 1
.3 3u F
C2 2
.3 3u F
C2 3
.3 3u F
FB 1
T3
T4
C2 4
.3 3u F
FB 2
C2 5
.4 7u F
C2 6
10 0u F
PA O ut
V1
50 VD C
Re d
Figure 9
Power Divider PD8
R7
100
R2
Out Out
R1
200
27
R3
200
T1
08 112 6
PD8 rev0
T2
-8db splitter
Figure 10
In
R4
20 0
R5
27
R6
200
18
Page 19
Interface Connections RJ45
RJ45 Rev0 090217
- J1 -
- J2 -
Pin 8
Pin 7
Pi n 6
Pin 5
R1
1k
Pin 4
Pin 3
D2D1
Pi n 2
Pin 1
C1
0.1 u F
R2
560
1/2 W
Pin 8
Pin 7
Pin 6
Pi n 5
Pin 4
Pin 2
Pin 3
Pi n 1
J3
CON N
Figure 11
19
Page 20
Relay Board
HD 1 HD 4
PA IN
RAD IO
ANTE NNA
PA OU T
Figure 12
RLA 081210
RL4
RL1
MA Y 2 1, 2008
Reference figures and drawings
Figure 1 Interconnections ....................................................................................................................................... 7
Figure 2 Amplifier Front......................................................................................................................................... 9
Figure 3 ................................................................................................................................................................. 13
Figure 4 ................................................................................................................................................................. 14
Figure 5 ................................................................................................................................................................. 15
Figure 6 ................................................................................................................................................................. 16
Figure 7 ................................................................................................................................................................. 16
Figure 8 ................................................................................................................................................................. 17
Figure 9 ................................................................................................................................................................. 18
Figure 10 ............................................................................................................................................................... 18
Figure 11 ............................................................................................................................................................... 19
Figure 12 ............................................................................................................................................................... 20
20
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