RF Technology PA 150, Eclipse PA 150 Operation And Maintenance Manual

Eclipse Series
RF Technology
rfinfo@rftechnology.com.au
February, 2003
PA 150 Amplifier
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
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
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
Loading...