Eclipse Series
RF Technology
rfinfo@rftechnology.com.au
February, 2003
PA 150 Amplifier
Operation and Maintenance Manual
This manual is produced by RF Technology Pty Ltd
10/8 Leighton Place, Hornsby NSW 2077 Australia.
Copyright © 1997 RF Technology.
RF Technology PA150
Page 2
CONTENTS CONTENTS
Contents
1 Operating Instructions 3
1 1.1 Front Panel Indicators 3
1.2 Internal Adjustments 3
1.3 Output Power 3
1.4 RF Level Detector 3
2 Circuit Description 4
2.1 Amplifiers 4
2.2 Power Splitter/Combiners 5
2.3 Directional Coupler 5
2.4 Low pass Filter 5
2.5 Power Control Circuits 5
2.6 RF Output Indicator 5
2.7 Over Temperature Protection 6
3 Alignment Procedure 6
4 Specifications 7
4.1 Description 7
4.2 Physical Configuration 7
4.3 Front Indicators and Test Points 7
4.3.1 Indicators 7
4.3.2 Test Points 8
5 Electrical Specifications 8
5.1 Power Requirements 8
5.2 Frequency Range 8
5.3 Nominal Antenna Impedance 8
5.4 Output Power 8
5.5 Transmit Duty Cycle 8
5.6 Spurious and Harmonics 8
5.7 Maximum Heatsink Temperature 9
5.8 ALC Output 9
5.9 Mis-Match Protection 9
6 Conectors 9
6.1 Antenna Connector 9
6.2 Power and I/O Connector 9
6.3 Test Connector 9
7 Appendix A Block Diagram 10
Schematic Diagram
Board Layout 11
Parts List 12
RF Technology PA150
Page 3
1 OPERATING INSTRUCTIONS
1 Operating Instructions
1.1 Front Panel Indicators
PWR LED
The Power LED shows that the dc supply is connected to the transmitter.
RFO LED
The RF Output LED indicates that the amplifier is being driven and that
the forward output power is above a preset level. The indication level is
set by RV1 which is accessible through the side of the case. (After
removing 20 screws)
TEMP LED
The Temperature LED indicates when the amplifier temperature
is too high. The power is automatically reduced if the output transistors
temperature rises above safe limits.
1.2 Internal Adjustments
All internal adjustments are factory set and should not need readjustment under
normal conditions.
1.3 Output Power
The output power is set to the desired level watts by RV2. It determines the
threshold of the ALC voltage which is fed back to the transmitter module to
regulate the power. The output power of standard amplifiers can be set to any
level between 25 and 75 watts. The high power versions with “H” suffix model
numbers can be set between 50 and 100 watts.
WARNING
Changes or modifications not expressly approved by
RF Technology could void your authority to operate
this equipment. Specifications may vary from those
given in this document in accordance with
requirements of local authorities. RF Technology
equipment is subject to continual improvement and RF
Technology reserve the right to change performance and
specification without further notice.
RF Technology PA150
Page 4
2 CIRCUIT DESCRIPTION
1.4 RF Level Detector
The RF Detector threshold for the RFO LED on the amplifier front panel is set by
RV1. This is normally set at half the rated output power.
PA150 Amplifier I/O Connections
25 Pin Connector
Function/Signal Pins Specification
DC Power +12Vdc
- 0Vdc
1,2,14,15
12,13,24,25
+11.4 to 16Vdc
ALC Output 8 Approx 7Vdc decreasing with
increasing power or temperature
RF Input
BNC Connector
25 Watts max
RF Output
N Connector
120 Watts Max
2 Circuit Description
The following descriptions should be read as an aid to understanding the block and
schematic diagrams at the rear of this manual.
2.1 Amplifiers
The RF power amplification is provided by one or two transistors, Q4 and Q5.
The standard power version uses one transistor (Q4) and the high power version
uses two. Each transistor is rated at 75 watts output. The input and output
impedances of the transistors are matched to 50O by microstrip matching
networks.
WARNING
Ensure that the output power setting complies with the equipment’s licence
requirements. Failure to do so may result in penalties being imposed by the
licensing authority.
RF Technology PA150
Page 5
2 CIRCUIT DESCRIPTION
The amplifiers are broad band and do not have any tuning adjustments. The “A”
versions are optimized for the frequency range 136-156 MHz while the “B”
versions cover 154-174 MHz.
The dc supply is fed to the amplifiers through resistors R21 and R22. This allows
the collector current of each amplifier to be measured at the test socket.
2.2 Power Splitter/Combiners
The high power versions use zero degree power splitters and combiners. They
consist of lumped element 1/4 wave 70O pi networks and 100O RF resistors (C4350, L17-20, R19-20). This configuration provides wider bandwidth and better
balance than lower cost 90 degree hybrids.
2.3 Directional Coupler
The forward and reverse power components are measured throug a coupled line
directional coupler. The output of the coupled line is frequency compensated by
R1-4 and C51-52 before being detected by D1 and D3.
The voltage output of the detectors is proportional to the forward and reflected
power.
2.4 Low Pass Filter
A low pass filter consisting of L12-16 and C39-42 reduces the harmonic
components to less than -80dBc. The filter uses a combination of lumped
elements and printed microstrips to obtain the required harmonic attenuation.
2.5 Power Control Circuits
The forward and reverse voltages from the directional coupler are amplified and
inverted by U2a and U2b. The amplified voltages are combined before
connecting to the input of error amplifier U2d.
Error amplifier U2d compares the detected voltage with the dc reference voltage
from output power trimpot RV2. The amplified difference at the output U2d is
supplied to the rear panel system connector for connection to the T150 ALC input.
2.6 RF Output Indicator
The forward power voltage is compared with the pre-set dc reference voltage from
RV1 and U2c. The output of U2c is used to turn on the RFO LED and provide an
output power logic signal to the test connector.
RF Technology PA150
Page 6
3 ALIGNMENT PROCEDURE
RV1 is normally set so that the RFO LED comes ON at 1-3 db below the normal
power output.
2.7 Over Temperature Protection
Thermistor RT1 is mounted to the case of output transistor Q4. If the transistor
case temperature rises above 90 degrees C the resistance of RT1 increases and Q2
is turned ON.
This causes the TEMP LED to come on and also reduces the dc reference voltage
to the output power error amplifier U2d. The input power will then be reduced by
the transmitter ALC circuits and the output transistors are kept within safe
operating limits.
3 Alignment Procedure
The following procedures may be used to align the amplifier for optimum
performance.
Standard Test Conditions
RF Input Source Power Supply Load
T150 Series transmitter
25 watts maximum
13.8 Vdc at 15 A 50O 150 watts
VSWR < 1.2:1
Set RFO Level
Step Input Measure Adjust
1 None Set RV1 and R2 Fully counter
clockwise
2 Centre channel
frequency from the
T150, 25W max
threshold
RF output power at
J2
Key transmitter
adjust RV2 for
desired output
3 As above RFO LED Key transmitter
adjust RV1 to
where the RFO
LED just goes OFF
RF Technology PA150
Page 7
4 SPECIFICATIONS
Set Output Power
Step Input Measure Adjust
4 As above RF output power at
J2
Key transmitter.
Adjust RV2 for the
desired power
4 Specifications
4.1 Description
The power amplifiers are designed for use with the T150 series transmitters to
provide 50-150 watts output.
Output power regulation is provided by connecting the output of the directional
coupler to the ALC input of the T150. the drive from the transmitter is then
automatically adjusted to maintain the required output.
The regulated power level can be preset over a wide range from 25 to 150 watts
depending on the available driver power.
Sensing circuits are provided to protect the output transistors from excessive
temperatures. If the output transistor case temperature rises to 90 degrees C, the
input drive will be reduced to prevent damage.
4.2 Physical Configuration
The power amplifier is designed to fit in a 19 inch rack mounted frame. The
installed height is 4RU (178mm) and the depth is 350mm. The amplifier is
95.25mm or three Elcipse modules wide.
An extruded aluminium heat sink with vertical fins is used. The temperature rise
is normally less than 30 degrees at 50 watts output.
4.3 Front Indicators and Test Points
4.3.1 Indicators
Power ON - Green LED
RF Power Output - Yellow LED
Over Temperature - Red LED
RF Technology PA150
Page 8
5 ELECTRICAL SPECIFICATIONS
4.3.2 Test Points (DB9 Connector)
Forward Power Pin 8 + Gnd (pin 1)
Reverse Power Pin 4 + Gnd (pin 1)
Collector Current Pin 6, Pin 2 + Vcc 13.2Vdc
5 Electrical Specifications
5.1 Power Requirements
Operating Voltage - 10.5 to 16 Vdc with output power reduced below 12.5 Vdc.
Current Drain @ 13.2 Vdc - 10 Amps Max at 50 watts. 100 mA Max standby
Polarity - Negative Ground
5.2 Frequency Range
Frequency 50 Watt 100 Watt
136-156MHz PA150A PA150AH
154-174 MHz PA150B PA150BH
5.3 Nominal Antenna Impedance
50O
5.4 Output Power
25 to 100 watts adjustable
5.5 Transmit Duty Cycle
With Free Air Circulation
50 Watts - 100% to 40 deg. C
100 Watts - 50% to 40 deg. C
With Fan Module
50-100 Watts - 100% to 50 deg. C
5.6 Spurious and Harmonics
Less than 0.25uW
RF Technology PA150
Page 9
Connectors
5.7 Maximum Heatsink Temperature
90 degrees C.
5.8 ALC Output
The ALC is intended for connection to the T150. It supplies a voltage which
decreases with increasing power or temperature.
5.9 Mis-Match Protection
The amplifier is protected from damage when operating into a VSWR of 10/1 at
all phase angles.
6 Connectors
6.1 Antenna Connector
Type N Female mounted on the module rear panel
6.2 Power and I/O Connector
25 pin “D” Male mounted on the rear panel
6.3 Test Connector
9 pin “D” Female mounted on the front panel.
RF Technology PA150
Page 10
1 2 3 4
A
B
C
D
4321
D
C
B
A
T itle
Number RevisionSize
A4
Date: 9-Oct-1998 Sheet of
File: D:\RFT _MasterFiles\..\9118-VHFPA-block .schDrawnB y:
-
+
+
+8.0V.REF.
POWER
ADJUST
OUT PUT
20 0MHz LPFDIRECTIONAL
COUPL ER
FWD.PWR.
REV.PWR.
U2D
AL COUT
+13.8 Vdc
U1
++
INPUT
+8.0V.REF.
U2C
C39-C42
L12-L16
SPLI T T ER COMBINER
D1,D3
75 W AMPLIFIERS
SET
DET ECT
LEVEL
R.F.DET .
REF.
REG.
OVER TEMP. DET ECTOR
OVER TEMP.
AL CAMP.
FWD. & REV.
DET ECTOR AMPS.
C47-50,L19,
L20,R20
2-2 0W
C43-46,L17,
L18,R19
* 15 0W VERSIONS
* 50 -75W V ERSIONS U SE SI NGLE AMPL IFER ( Q4)
50 -150W
T EMP.
R.F.DET .
t
RT 1
90DEG.C.
D2
U2B
U2A
RV 1
RV 2
Q2
Q1
Q5
Q4
R.F.T ECHNOLOGY PT Y . LT D.
10/8Leig htonPlace, HORNSBY , AUST RAL IA
BL OCK SIGNAL FL OW DIAGRAM
05 /9118R6
3 3
1 2 3 4
A
B
C
D
4321
D
C
B
A
T itle
Number RevisionSize
Orcad A
Date: 3-Aug-1998 Sheet of
File: D:\RF T _MasterFiles\..\9118-block.sch Dr awnB y:
A MPL I FIE R PCB ASSY 11/9118
+13.8
A.L .C.
0V
PWR AL C T EMP
L ED PCB ASSY 1 1/9106
+13.8
REV .PWR.
FWD.PWR.
OVER T EMP.
IcB
IcA0VRF.DET .
INPUT
OUT PUT
13251224112310229218207196185174163152141
P5
CONNECT OR DB25
J3
J1
P1J2P2
P3
123456789
10111213141516
P4
123456789101112131415
16
J5
594837261
J6
CONNECT OR DB9
D1 D2 D3
+
-
+
-
+
-
J1
BNC
J2
NType
R41
100
RF T E CHNOL OGY PT Y . L T D.
10/8Leighton PL ace,HORNSBY , 2077, Australia
9118 (VH F AMPL IFIER) 3
33
JBS after RH M
RF Technology PA150
Page 11
B PA150 PARTS LIST
Ref. Description Part Number
NOTE - ALL COMPONENTS FOR WHICH REF IS ACCOMPANIED
WITH AN ASTERIX (*) ARE USED ONLY IN HIGH POWER MODELS (PA150XH)
C1 CAP 10N 10% 50V X7R RAD.2 46/2001/010N
C2 CAP 4N7 5% 400V MKT RAD.2 47/2040/04N7
C3 CAP 10U 35V RAD ELECTRO 41/2001/010U
C4 CAP 10N 10% 50V X7R RAD.2 46/2001/010N
C5 CAP 1N0 5% 63V NPO SM1206 46/3300/01N0
C6 CAP 1N0 5% 63V NPO SM1206 46/3300/01N0
C7 CAP 100N 10% 50V X7R RAD.2 46/2001/100N
C8 CAP 10N 10% 50V X7R RAD.2 46/2001/010N
C14 CAP 6.8U 20% 25V SOLID AL 41/2225/06U8
C15 CAP 100N 10% 50V X7R RAD.2 46/2001/100N
C16 CAP 100N 10% 63V X7R 1206 46/3310/100N
C17 CAP 1N0 500V MICA SM2220 48/3003/01N0
C18 CAP 1N0 500V MICA SM2220 48/3003/01N0
C29* CAP 6.8U 20% 25V SOLID AL 41/2225/06U8
C30* CAP 100N 10% 50V X7R RAD.2 46/2001/100N
C31* CAP 100N 10% 63V X7R 1206 46/3310/100N
C32* CAP 1N0 500V MICA SM2220 48/3003/01N0
C33* CAP 1N0 500V MICA SM2220 48/3003/01N0
C43* CAP 12P 500V MICA SM1210 48/3003/012P
C44* CAP 12P 500V MICA SM1210 48/3003/012P
C45* CAP 12P 500V MICA SM1210 48/3003/012P
C46* CAP 12P 500V MICA SM1210 48/3003/012P
C47* CAP 12P 500V MICA SM1210 48/3003/012P
C48* CAP 12P 500V MICA SM1210 48/3003/012P
C49* CAP 12P 500V MICA SM1210 48/3003/012P
C50* CAP 12P 500V MICA SM1210 48/3003/012P
C51 CAP 10P 5% 63V NPO SM 1206 46/3300/010P
C52 CAP 10P 5% 63V NPO SM1206 46/3300/010P
C53 CAP 1N0 5% 63V NPO SM1206 46/3300/01N0
C54 CAP 1N0 5% 63V NPO SM1206 46/3300/01N0
C55 CAP 1N0 5% 100V NPO RAD.2 46/2000/01N0
C56 CAP 1N0 5% 100V NPO RAD.2 46/2000/01N0
C57 CAP 1N0 5% 100V NPO RAD.2 46/2000/01N0
C58 CAP 1N0 5% 100V NPO RAD.2 46/2000/01N0
C59 CAP 1N0 5% 100V NPO RAD.2 46/2000/01N0
C60 CAP 1N0 5% 100V NPO RAD.2 46/2000/01N0
C61 CAP 1N0 5% 100V NPO RAD.2 46/2000/01N0
D1 DIODE SHTKY BAT17 SOT23 21/3030/0017
D2 DIODE SILICON 1N4148 21/1010/4148
D3 DIODE SHTKY BAT17 SOT23 21/3030/0017
L1 IND 1U0 10% CHOKE SM1206 37/3320/01U0
L2 INDUCTOR 1UH AXIAL 37/2021/001U
L3 FERRITE BEAD 3x4x1 4S2 37/1022/0001
L4 COIL AIR COR 7T 1.5P 6.35ID 37/1635/1507
L5 IND MOLDED 6.5 TURN 37/2021/0006
L6 IND MOLDED 6.5 TURN 37/2021/0006
L7* INDUCTOR 1UH AXIAL 37/2021/001U
L8* FERRITE BEAD 3x4x14S2 37/1022/0001
RF Technology PA150
Page 12
B PA150 PARTS LIST
Ref. Description Part Number
L9* COIL AIR CORE 7T 1.5P 6.35ID 37/1635/1507
L10* IND MOLDED 6.5 TURN 37/2021/0006
L11* IND MOLDED 6.5 TURN 37/2021/0006
L12 COIL AIR CORE 2T 2P 6.35ID 37/1400/1002
L13 COIL AIR CORE 2T 2P 6.35ID 37/1400/1002
L14 COIL AIR CORE 3T 2P 6.35ID 37/1635/2003
L15 COIL AIR CORE 3T 5P 6.35ID 37/1635/1503
L16 COIL AIR CORE 3T 2P 6.35ID 37/1635/2003
L17 INDUCTOR, MOULDED 7.5T 37/2021/0007
L18 INDUCTOR, MOULDED 7.5T 37/2021/0007
L19* COIL AIR CORE 6T 1.5P 4D 37/1400/1006
L20* COIL AIR CORE 6T 1.5P 4D 37/1400/1006
P1 6.35mm QC TAB VERT PCB MT 35/0635/0001
P3 6.35mm QC TAB VERT PCB MT 35/0635/0001
P4 CON 16WAY SHR'D HEADER 35/2502/0016
Q1 TRSTR GP PNP 2N3906 TO92 27/2010/3906
Q2 TRSTR GP NPN 2N3904 TO92 27/2020/3904
Q3 TRSTR GP NPN 2N3904 TO92 27/2020/3904
Q4 TRSTR NPN VHF RF MRF247 27/3020/MRF247
Q5* TRSTR NPN VHF RF MRF247 27/3020/MRF247
R1 RES 220 5% 0.25W SM1206 51/3380/0220
R2 RES 220 5% 0.25W SM1206 51/3380/0220
R3 RES 220 5% 0.25W SM1206 51/3380/0220
R4 RES 220 5% 0.25W SM1206 51/3380/0220
R5 RES 47K 5% 0.25W AXIAL 51/1040/047K
R6 RES 100K 5% 0.25W AXIAL 51/1040/100K
R7 RES 1K0 5% 0.25W AXIAL 51/1040/01K0
R8 RES 47K 5% 0.25W AXIAL 51/1040/047K
R9 RES 100K 5% 0.25W AXIAL 51/1040/100K
R10 RES 1K0 5% 0.25W AXIAL 51/1040/01K0
R11 RES 100 5% 0.25W AXIAL 51/1040/0100
R12 RES 1M0 5% 0.25W AXIAL 51/1040/01M0
R13 RES 100K 5% 0.25W AXIAL 51/1040/100K
R14 RES 10K 5% 0.25W AXIAL 51/1040/010K
R15 RES 10K 5% 0.25W AXIAL 51/1040/010K
R16 RES 2K2 5% 0.25W AXIAL 51/1040/2K2
R17 RES 10K 5% 0.25W AXIAL 51/1040/010K
R18 RES 10K 5% 0.25W AXIAL 51/1040/101K
R19* RES 100 OHM 40W RF 51/RF40/0100
R20* RES 100 OHM 40W RF 51/RF40/0100
R21 RES 0.1 5% 10W ASW 10 51/0010/00R1
R22* RES 0.1 5% 10W ASW 10 51/0010/00R1
R23 RES 10K 5% 0.25W AXIAL 51/1040/010K
R24 RES 270 5% 0.25W AXIAL 51/1040/0270
R25 RES 270 5% 0.25W AXIAL 51/1040/0270
R26 RES 680 5% 0.25W AXIAL 51/1040/0680
R27 RES 10K 5% 0.25W AXIAL 51/1040/010K
R28 RES 10K 5% 0.25W AXIAL 51/1040/010K
R29 RES 10K 5% 0.25W AXIAL 51/1040/010K
R30 RES 47K 5% 0.25W AXIAL 51/1040/047K
R31 RES 33K 5% 0.25W AXIAL 51/1040/033K
RF Technology PA150
Page 13
B PA150 Parts List
Ref Description Part Number
R32 RES 33K 5% 0.25W AXIAL 51/1040/033K
R34 RES 220 5% 2W AXIAL 51/1052/0220
R35 RES 10 5% 0.25W AXIAL 51/1040/0010
R36 RES 10 5% 0.25W AXIAL 51/1040/0010
R37 RES 220 5% 2W AXIAL 51/1052/0220
R38* RES 220 5% 2W AXIAL 51/1052/0220
R39* RES 10 5% 0.25W AXIAL 51/1040/0010
R40* RES 10 5% 0.25W AXIAL 51/1040/0010
R41* RES 220 5% 2W AXIAL 51/1052/0220
R42* RES 12R 5% 2W AXIAL 51/1052/0012
R43 RES 12R 5% 2W AXIAL 51/1052/0012
R50(P2) RES 100 5% 0.25W AXIAL 51/1040/0100
RT1 THERMISTOR 54/0400/0080
RV1 TRIMPOT 10K 1 TURN VERT 53/1020/010K
RV2 TRIMPOT 10K 1 TURN VERT 53/1020/010K
U1 IC VOLT REG 78L08 TO 92M 25/2040/78L08
U2 IC QUAD OP AMP TLC274 25/2050/274C
PA150A 135-156 MHz Parts
These parts fitted to PA150A & AH
C9 CAP 160P 500V MICA SM1812 48/3003/160P
C10 CAP 160P 500V MICA SM1812 48/3003/160P
C12 CAP 120P 500V MICA SM1812 48/3003/120P
C13 CAP 27P 500V MICA SM1210 48/3003/027P
C19 CAP 68P 500V MICA SM1210 48/3003/068P
C20 CAP 68P 500V MICA SM1210 48/3003/068P
C21 CAP 510P 500V MICA SM1812 48/3003/510P
C22 CAP 330P 500V MICA SM1812 48/3003/330P
C23 CAP 270P 500V MICA SM1812 48/3003/270P
C39 CAP 39P 500V MICA SM1210 48/3003/039P
C40 CAP 39P 500V MICA SM1210 48/3003/039P
C41 CAP 10P 500V MICA SM1210 48/3003/010P
C42 CAP 12P 500V MICA SM1210 48/3003/012P
These additional parts used on PA150AH ONLY
C24* CAP 160P 500V MICA SM1812 48/3003/160P
C25* CAP 160P 500V MICA SM1812 48/3003/160P
C27* CAP 120P 500V MICA SM1812 48/3003/120P
C28* CAP 27P 500V MICA SM1210 48/3003/027P
C34* CAP 68P 500V MICA SM1210 48/3003/068P
C35* CAP 68P 500V MICA SM1210 48/3003/068P
C36* CAP 510P 500V MICA SM1812 48/3003/510P
C37* CAP 330P 500V MICA SM1812 48/3003/330P
C38* CAP 270P 500V MICA SM1812 48/3003/270P
RF Technology PA150
Page 14
B PA150 Parts List
Ref Description Part Number
PA150B 154-174 MHz Parts
These parts fitted to PA150B & BH
C9 CAP 180P 500V MICA SM1812 48/3003/180P
C10 CAP 180P 500V MICA SM1812 48/3003/180P
C12 CAP 100P 500V MICA SM1812 48/3003/100P
C13 CAP 20P 500V MICA SM1210 48/3003/020P
C19 CAP 51P 500V MICA SM1210 48/3003/051P
C20 CAP 51P 500V MICA SM1210 48/3003/051P
C21 CAP 390P 500V MICA SM1812 48/3003/390P
C22 CAP 220P 500V MICA SM1812 48/3003/220P
C23 CAP 180P 500V MICA SM1812 48/3003/180P
C39 CAP 27P 500V MICA SM1210 48/3003/027P
C40 CAP 27P 500V MICA SM1210 48/3003/027P
C41 CAP 8P 500V MICA SM1210 48/3003/008P
C42 CAP 8P 500V MICA SM1210 48/3003/008P
These additional parts used on PA150BH ONLY
C11 CAP 160P 500V MICA SM1812 48/3003/160P
C24* CAP 180P 500V MICA SM1812 48/3003/180P
C25* CAP 180P 500V MICA SM1812 48/3003/180P
C26 CAP 160P 500V MICA SM1812 48/3003/160P
C27* CAP 100P 500V MICA SM1812 48/3003/100P
C28* CAP 20P 500V MICA SM1210 48/3003/020P
C34* CAP 51P 500V MICA SM1210 48/3003/051P
C35* CAP 51P 500V MCA SM1210 48/3003/051P
C36* CAP 390P 500V MICA SM1812 48/3003/390P
C37* CAP 220P 500V MICA SM1812 48/3003/220P
C38* CAP 180P 500V MICA SM1812 48/3003/180P
End parts list
1 2 3 4 5 6 78
A
B
C
D
E
F
8
7654321
F
E
D
C
B
A
12
120W AMPLIFIER, VHF 136-174 MHZ
05/9118 R7
7
20-Dec-2004
D:\Protel Files\Master_EDA\9118_PAVHF_FAN\9118.ddb - Documents\9118R7V7.sch
Title
Size: Number:
Print Date:
File:
Revision:
Sheet of
A3
RF Technology Pty Ltd
Unit 10, 8 Leighton Place
Hornsby, NSW 2077
Australia
Rev. Release Date: Originator:
Rev No. ECO No. Description of Change
Sheet
Revision:
Design
LOW PASS FILTER
COMBINER
DIRECTIONAL COUPLER
SPLITTER
FWD.PWR.
REV.PWR.
IC A
FWD.PWR.
REV.PWR.
IC B
IC A
RF DET.
OVER TEMP.
RF DET.
RF LED
RF LED
TEMP. LED
TEMP. LED
IC B
OVER TEMP.
DC LED
+8.0
+8.0+13.8 +13.2B
+13.2A
+13.8
+8.0
+8.0
+8.0
+13.8
+13.8
+13.2A
+13.2B
NOT USED IN 50/60 WATT VERSIONS
1-25W
INPUT
25-120W
OUTPUT
L1
1U
R1
220
R2
220
R3
220
R4
220
D1
BAT17
R6
100K
R7
1K
R9
100K
R10
1K
R11
100
C1
10N
R12
1M
C2
4N7
R13
100K
J1
TP1
TP2
+
C3
10U
VI
1
GND
2
VO
3
U1
LM78L08
R14
10K
t
RT1
D2
1N4148
Q1
2N3906
Q2
3904
R15
10K
R16
2K2
R17
10K
R18
10K
C4
10N
C5
1N0
C6
1N0
C7
100N
J2
Q3
2N3904
R19
100
R20
100
R21
0R1
R22
0R1
TP3
C8
10N
P1
P2
P3
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
P4
R24
270
R25
270
R26
680
R27
10K
RV1
R28
10K
RV2
R29
10K
R30
47K
D3
BAT17
R31
33K
R32
33K
12
13
14
00
U2D
TLC274
+
C14
6U8
C16
100N
C17
1N0
R34
220
C18
1N0
R35
10
C19
*51P
C20
*51P
C22
*220P
C23
*180P
Q4
MRF247
R37
220
L6
+
C29
6U8
C31
100N
C32
1N0
R38
220
C33
1N0
R39
10
C34
*51P
C35
*51P
C37
*220P
C38
*180P
Q5
MRF247
R41
220
L11
C39
27P
C40
27P
C41
8P
C42
8P
C43
12P
C44
12P
C45
12P
C46
12P
C47
12P
C48
12P
C49
12P
C50
12P
C53
1N0
C54
1N0
C55
1N0
C56
1N0
C57
1N0
C58
1N0
C59
1N0
C60
1N0
C61
1N0
L10
L15
L12
L13
L14 L16
L9
170N
L17
L18
L19
L20
C52
10P
C51
10P
L5
L3
L8
R36
10
L2
1U
C21
*390P
L4
C15
100N
C11
0P
C26
0P
C36
*390P
L7
1U
R40
10
C30
100N
R42
12
R43
12
R8
47K
R5
47K
C9
*180P
C10
*180P
C24
*180P
C25
*180P
C12
*100P
C13
*20P
C27
*100P
C28
*20P
(SUFFIX -H DESIGNATION)
3
2
1
11 4
U2A
TLC274
5
6
7
0 0
U2B
TLC274
10
9
8
0 0
U2C
TLC274
5
6
7
00
U3B
TLC274
3
2
1
11 4
U3A
TLC274
R48
1K
R49
10K
R44
10K
R45
1K5
R47
100
+8.0
C63
1N0
J3
FAN
+13.8
C62
1N0
R33
100
C64
1N0
12
13
14
00
U3D
TLC274
10
9
8
00
U3C
TLC274
Q6
3055
R50
*10K
D6
*1N4148
D5
*1N4148
R46
10K
D4
1N4002
R23
10K
V+
1
Vo
2
GND
3
U4
LM61
6
221 Add fan control circuit
* VALUES ARE FOR 154 - 174 MHz
C19 C20 C21 C22 C23
C34 C35 C36 C37 C38C9C24
C10
C25
160P 160P
C12
C27
120P
C13
C28
27P68P
* 136-154MHz
68P
510P 330P 270P
C39
C40
C41 C42
10P 12P39P
(SUFFIX -A MODELS)
(SUFFIX -B MODELS) C11/C26 MAY BE FITTED ON SOME MODELS
(SUFFIX -AH MODELS)
C11
C26
NF NF270P
NF
100P NF
R42
R43
12
AH model high-end low output power fix
7
211
1 2 3 4 5 6 78
A
B
C
D
E
F
8
7654321
F
E
D
C
B
A
12
120W AMPLIFIER, VHF 136-174 MHZ
05/9118 R7
8
21-Feb-2006
D:\Protel Files\Master_EDA\9118_PAVHF_FAN\9118.ddb - Documents\9118R7V9.sch
Title
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File:
Revision:
Sheet of
A3
RF Technology Pty Ltd
Unit 10, 8 Leighton Place
Hornsby, NSW 2077
Australia
Rev. Release Date: Originator:
Rev No. ECO No. Description of Change
Sheet
Revision:
Design
LOW PASS FILTER
COMBINER
DIRECTIONAL COUPLER
SPLITTER
FWD.PWR.
REV.PWR.
IC A
FWD.PWR.
REV.PWR.
IC B
IC A
RF DET.
OVER TEMP.
RF DET.
RF LED
RF LED
TEMP. LED
TEMP. LED
IC B
OVER TEMP.
DC LED
+8.0
+8.0+13.8 +13.2B
+13.2A
+13.8
+8.0
+8.0
+8.0
+13.8
+13.8
+13.2A
+13.2B
NOT USED IN 50/60 WATT VERSIONS
1-25W
INPUT
25-120W
OUTPUT
L1
1U
R1
220
R2
220
R3
220
R4
220
D1
BAT17
R6
100K
R7
1K
R9
100K
R10
1K
R11
100
C1
10N
R12
100K
C2
100N
R13
100K
J1
TP1
TP2
+
C3
10U
VI
1
GND
2
VO
3
U1
LM78L08
R14
10K
t
RT1
D2
1N4148
Q1
2N3906
Q2
3904
R15
10K
R16
2K2
R17
10K
R18
10K
C4
10N
C5
1N0
C6
1N0
C7
100N
J2
Q3
2N3904
R19
100
R20
100
R21
0R1
R22
0R1
TP3
C8
10N
P1
P2
P3
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
P4
R24
270
R25
270
R26
680
R27
10K
RV1
R28
10K
RV2
R29
10K
R30
47K
D3
BAT17
R31
33K
R32
33K
12
13
14
00
U2D
TLC274
+
C14
6U8
C16
100N
C17
1N0
R34
**220
C18
1N0
R35
10
C19
*51P
C20
*51P(not fit in BH)
C22
*220P
C23
*180P(270P fo BH model)
Q4
MRF247
R37
**220
L6
**
+
C29
6U8
C31
100N
C32
1N0
R38
**220
C33
1N0
R39
10
C34
*51P
C35
*51P(not fit in BH)
C37
*220P
C38
*180P(270P for BH model)
Q5
MRF247
R41
**220
L11
**
C39
27P
C40
27P
C41
8P
C42
8P
C43
12P
C44
12P
C45
12P
C46
12P
C47
12P
C48
12P
C49
12P
C50
12P
C53
1N0
C54
1N0
C55
1N0
C56
1N0
C57
1N0
C58
1N0
C59
1N0
C60
1N0
C61
1N0
L10
L15
L12
L13
L14 L16
L9
170N
L17
L18
L19
L20
C52
10P
C51
10P
L5
L3
L8
R36
10
L2
1U
C21
*390P
L4
C15
**100N
C11
***120P
C26
***120P
C36
*390P
L7
1U
R40
10
C30
**100N
R42
12
R43
12
R8
47K
R5
47K
C9
*180P
C10
*180P
C24
*180P
C25
*180P
C12
*120P
C13
*22P
C27
*120P
C28
*22P
(SUFFIX -H DESIGNATION)
3
2
1
11 4
U2A
TLC274
5
6
7
0 0
U2B
TLC274
10
9
8
0 0
U2C
TLC274
5
6
7
00
U3B
TLC274
3
2
1
11 4
U3A
TLC274
R48
1K
R49
10K
R44
10K
R45
1K5
R47
100
+8.0
C63
1N0
J3
FAN
+13.8
C62
1N0
R33
100
C64
1N0
12
13
14
00
U3D
TLC274
10
9
8
00
U3C
TLC274
Q6
3055
R50
*10K
D6
*1N4148
D5
*1N4148
R46
10K
D4
1N4002
R23
10K
V+
1
Vo
2
GND
3
U4
LM61
6
221 Add fan control circuit
* VALUES ARE FOR 154 - 174 MHz
C19 C20 C21 C22 C23
C34 C35 C36 C37 C38C9C24
C10
C25
160P 160P
C12
C27
120P
C13
C28
27P68P
136-154MHz
68P
510P 330P 270P
C39
C40
C41 C42
10P 12P39P
(SUFFIX -A MODELS)
(SUFFIX -B MODELS)
*** C11/C26 ARE NOT FITTED ON 50W MODELS
(SUFFIX -AH MODELS)
C11
C26
NF NF270P
NF
100P NF
R42
R43
12
AH model high-end low output power fix
7
211
** THESE 8 COMPONENTS ARE NOT FITTED ON PA150BH (100W) MODELS
8 241 mismatch fix for new pcb
9 260 reduce ALC loop gain: R12 to 100K, C2to 100N
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