Yaesu FT-7100M Service Manual

VHF/UHF Dual Band
POWER
TONE
FM Transceiver
FT-7100M
Technical Supplement
©2002 VERTEX STANDARD CO., LTD. Printed in Japan.
EH003M90A
BAND
V/M
HOME
MHz
VERTEX STANDARD CO., LTD.
4-8-8 Nakameguro, Meguro-Ku, Tokyo 153-8644, Japan
VERTEX STANDARD
US Headquarters
10900 Walker Street, Cypress, CA 90630, U.S.A.
International Division
8350 N.W. 52nd Terrace, Suite 201, Miami, FL 33166, U.S.A.
YAESU EUROPE B.V.
P.O. Box 75525, 1118 ZN Schiphol, The Netherlands
YAESU UK LTD.
Unit 12, Sun Valley Business Park, Winnall Close Winchester, Hampshire, SO23 0LB, U.K.
VERTEX STANDARD HK LTD.
Unit 5, 20/F., Seaview Centre, 139-141 Hoi Bun Road, Kwun Tong, Kowloon, Hong Kong
LOW
REV

Introduction

This manual provides technical information necessary for servicing the FT-7100M FM Transceiver.
Servicing this equipment requires expertise in handling surface-mount chip components. Attempts by non-qualified persons to service this equipment may result in permanent damage not covered by the warranty, and may be illegal in some countries.
Two PCB layout diagrams are provided for each double-sided circuit board in the repeater. Each side of is referred to by the type of the majority of components installed on that side (“leaded” or “chip-only”). In most cases one side has only chip components, and the other has either a mixture of both chip and leaded components (trimmers, coils, electrolytic capacitors, ICs, etc.), or leaded components only.
While we believe the technical information in this manual to be correct, VERTEX STANDARD assumes no liability for damage that may occur as a result of typographical or other errors that may be present. Your cooperation in pointing out any inconsistencies in the technical information would be appreciated.

Contents

Specifications................................................. 2
Exploded View & Miscellaneous Parts......3
Block Diagram...............................................4
Circuit Description .................................. 5
Alignment.................................................. 9
Board Unit (
Schematics, Layouts & Parts
MAIN Unit .............................................................17
PANEL Unit ...........................................................53
VR Unit ..................................................................65
)
1

Specifications

GENERAL

Frequency Range: RX: 108.00 – 180.00 MHz
320 – 480 MHz 810 – 999.990 MHz (Cellular Blocked)
TX: 144 – 146 MHz or 144 – 148 MHz
430 – 440 MHz or 430 – 450 MHz
Channel Steps: 5/10/12.5/15/20/25/50 kHz Mode of Emission: F3, F2, F1 Antenna Impedance: 50 , unbalanced (Antenna Duplexer built-in) Frequency Stability: ±5 ppm @ 14°F ~ +140°F (–10°C ~ +60°C) Operating Temperature Range: –4°F ~ +140°F (–20°C ~ +60°C) Supply Voltage: 13.8 VDC (±15%), negative ground Current Consumption (Approx.):RX: 0.5 A (Squelched)
TX: 11.5 A (VHF), 10.0 A (UHF)
Case Size (WxHxD): 5.8 x 1.9 x 6.9 inches (140 x 38 x 166 mm)
(w/o knobs & connectors)
Weight (Approx.): 2.2 lb (1 kg)

TRANSMITTER

Output Power: 50/20/10/5 W (VHF), 35/20/10/5 W (UHF) Modulation Type: Variable Reactance Maximum Deviation: ±5 kHz Spurious Radiation: Better than –60 dB Modulation Distortion: Less than 3% Microphone Impedance: 2 k DATA Jack Impedance: 10 k

RECEIVER

Circuit Type: Double-conversion superheterodyne Intermediate Frequencies: 21.7 MHz/450 kHz (VHF), 45.05 MHz/455 kHz (UHF) Sensitivity (for 12dB SINAD): Better than 0.16 µV Squelch Sensitivity: 0.1 µV Image Rejection: 70 dB Selectivity (–6dB/–60dB): 12 kHz/24 kHz Maximum AF Output: 2 W @ 8 for 10% THD AF Output Impedance: 4 – 16
Specifications are subject to change without notice, and are guaranteed within the 144 and 430 MHz amateur bands only. Frequency ranges will vary according to transceiver version; check witj your dealer.
2

Exploded View & Miscellaneous Parts

REF. VXSTD P/N Description Qty.
1 U31206007 OVAL HEAD SCREW M2.6x6B 14 2 U44308002 TAPTITE SCREW M3x8NI 13 3 U03310002 SEMS SCREW ASM3x10NI 4 4 U43212007 TAPTITE SCREW M2.6x12B 3 5 U20308002 BINDING HEAD SCREW M3x8NI 2 6 U20318007 BINDING HEAD SCREW M3x18B 4
MAIN Unit
À
H
M4090149 SPEAKER
T9206082 CW ASSY
H
Á
À
À
A
À
B
À
À
À
G
À
F
E
À
À
C
RA02132A0 NYLON MESH
R0150630
À
HOLDER
D
CS1739001 CASE ASSY
À
T9206761 WIRE ASSY
Á
Á
Â
Â
Â
Á
Á
Â
Á
Á
Á
C
Á
M2090034 FAN
Å
Å
Å
Å
S5000206 FAN GUARD
Á
Á
Á
B
Ä
Ä
P1090984 CONNECTOR (USA, AUS)
Á
A
G
RA027330A SPECIAL NUT (x2 pcs)
RA027330A KNOB (SQL) (x2 pcs)
RA027340A KNOB (AF) (x2 pcs)
RA0292900 FRONT PANEL ASSY
RA0268900 WINDOW
VR Unit
RA0274100 DOUBLE FACE
RA027320A ENCODER KNOB
R0137551 COIL SPRING
RA026900A RELEASE KNOB
RA0276000 RUBBER CONNECTOR (x2 pcs)
RA0274000 SHEET
Ã
À
RA0273900 REFLECTOR SHEET
RA0268700 LIGHT GUIDE
RA0273800 DIFFUSER SHEET
Ã
Ã
PANEL Unit
À
RA026850A REAR PANEL
T9101509 CT CABLE
RA026860A SUB PANEL
D
P1090547 CONNECTOR (EXP)
F
E
RA026680A CHASSIS
S5000236 LUG WASHER (EXP)
3

Block Diagram

4

Circuit Description

VHF Reception

Incoming VHF signals are passed through a low-pass filter network, antenna switching diodes D1056 (1SS355) and D1057 (RLS135), and a high-pass filter network, and on to the RF amplifier Q1007 (3SK131). The amplified RF signal is passed through another RF amplifier Q1011 (2SC5226) and band-pass filtered again by varactor-tuned resonators L1022, L1029, L1034 and D1009, D1012, D1014 (all HVU359), then applied to the 1st mixer Q1023 (3SK228) along with the first local signal from the PLL circuit.
The first local signal is generated between 122.3 MHz and 126.3 MHz by the VHF VCO, which consists of Q1025 (2SC5006) and varactor diodes D1023, D1024, and D1066 (all HSV362) according to the receiving frequency.
The 21.7 MHz first IF signal is applied to monolithic crystal filters XF1003 and XF1004 (both 21R12B5) which strip away unwanted mixer products, and the IF signal is applied to the first IF amplifier Q1032 (2SC4400). The amplified first IF signal is then delivered to the FM IF sub­system IC Q1043 (TK10931V), which contains the second mixer, limiter amplifier, noise amplifier, and FM detec­tor.
The second local signal is generated by 21.25 MHz crys­tal X1002 and Q1060 (2SC5374), producing the 450 kHz second IF signal when mixed with the first IF signal with­in Q1043.
The 450 kHz second IF signal is applied to the ceramic filter CF1002 (ALFYM450F) which strips away all but the desired signal, and then passes through the limiter am­plifier within Q1043 to the ceramic discriminator CD1002 (CDBM450C7), which removes any amplitude variations in the 450 kHz IF signal before detection of speech.
The detected audio passes through the de-emphasis network, a high-pass filter consisting of Q1088 (NJM2902V-3) and associated circuitry, and a low-pass filter consisting of Q1088 (NJM2902V-4) and associated circuitry. The filtered audio signal is amplified by Q1047 (NJM2902V-1), then passes through the audio volume control IC Q1096 (M511312FP) which adjusts the audio sensitivity to compensate for audio level variations, and then is delivered to audio switch Q1094 (BU4053BCFV).
When the internal speaker is selected, the audio signal
is amplified by Q1098 (TDA7233D), then applied to the internal loudspeaker. When the external speaker is select­ed, the audio signal is amplified by Q1097 (TDA2003H), then it passes through the EXT SP jack to the external loud­speaker.

UHF Reception

Incoming UHF signals are passed through a low-pass
filter network, high-pass filter network, antenna switch­ing diodes D1058 (1SS355) and D1059 (RLS135), and on to the band-pass filter network consisting of varactor diode D1004 (HVU359) and L1001.
The filtered UHF signal is amplified by RF amplifier
Q1008 (3SK228) and fed to another band-pass filter con­sisting of varactor diode D1006 (HVU359) and L1008, and then is passed through another RF amplifier Q1010 (2SC5226) to another band-pass filter consisting of var­actor diodes D1010 and D1011 (both HVU359) and L1027/ L1030.
The amplified and filtered UHF signal is applied to
the 1st mixer Q1019 (3SK228) along with the first local signal from the PLL circuit.
The first local signal is generated between 384.95 MHz
and 404.95 MHz by the UHF VCO, which consists of Q1024 (2SC5006) and varactor diodes D1020 (1SV281) and D1021 (1SV280), according to the receiving frequen­cy.
The 45.05 MHz first IF signal is applied to monolithic
crystal filters XF1001 and XF1002 (both 45M15B5H) which strip away unwanted mixer products, and the IF signal is applied to the first IF amplifier Q1029 (2SC4400). The amplified first IF signal is then delivered to the FM IF subsystem IC Q1034 (TA31136FN), which contains the second mixer, limiter amplifier, noise amplifier, and FM detector.
The second local signal is generated by 45.505 MHz
crystal X1001, producing the 455 kHz second IF signal when mixed with the first IF signal within Q1034.
The 455 kHz second IF signal is applied to the ceramic
filter CF1001 (CFW455F) which strips away all but the desired signal, and then passes through the limiter am­plifier within Q1034 to the ceramic discriminator CD1001 (CDBM455C7), which removes any amplitude variations in the 455 kHz IF signal before detection of speech.
5
Circuit Description
The detected audio passes through the de-emphasis
network, a high-pass filter consisting of Q1117 (M5223AGP-1) and associated circuitry, and a low-pass filter consisting of Q1117 (M5223AGP-2) and associated circuitry. The filtered audio signal is amplified by Q1046 (NJM2902V-3), then passes through the audio volume control IC Q1096 (M511312FP), which adjusts the audio sensitivity to compensate for audio level variations, and then is delivered to audio switch Q1094 (BU4053BCFV).
When the internal speaker is selected, the audio signal
is amplified by Q1098 (TDA7233D) then applied to the internal loudspeaker. When the external speaker is select­ed, the audio signal is amplified by Q1097 (TDA2003H), then it passes through the EXT SP jack to the external loudspeaker.

V/V (VHF-VHF) Dual Reception

During V&V operation, the incoming VHF "sub" band signal is passed through a low-pass filter network, anten­na switching diode D1056 (1SS355), D1057 (RLS135) and a high-pass filter network to the RF amplifier Q1007 (3SK131). The amplified RF signal is passed through a high-pass filter network, VHF "sub" RF amplifier Q1013 (2SC3120), and a low-pass filter network, then is applied to the VHF "sub" first mixer Q1015 (2SC3120) along with the 255 MHz VHF "sub" first local signal from the PLL circuit.
The 399 ~ 403 MHz VHF "sub" first IF signal is applied to the VHF "sub" second IF mixer Q1019 (3SK228) along with the VHF "sub" second local signal from the PLL cir­cuit. The VHF "sub" second local signal is generated be­tween 444.05 MHz and 448.05 MHz by the UHF VCO Q1023.
The 45.05 MHz VHF "sub" second IF signal is applied to the UHF receiving circuit. The VHF "sub" signal is am­plified, filtered, and demodulated, etc., by the UHF "main" receiving circuit, described previously.

U/U (UHF-UHF) Dual Reception

During U/U operation, the incoming UHF "sub" band
signal is passed through high-pass and low-pass filter networks, antenna switching diodes D1058 (1SS355) and D1059 (RLS135), and another high-pass filter network to the RF amplifier Q1009 (2SC3120). The amplified RF sig­nal is passed through a low-pass filter network, UHF "sub" RF amplifier Q1014 (2SC3120), and low-pass filter net­work, then is applied to the UHF "sub" first mixer Q1016 (2SC3120) along with the 255 MHz UHF "sub" first local signal from the PLL circuit.
The 175 ~ 195 MHz UHF "sub" first IF signal is applied
to the UHF "sub" second IF mixer Q1023 (3SK228) along with the UHF "sub" second local signal from the PLL cir­cuit. The UHF "sub" second local signal is generated be­tween 153.30 MHz and 173.30 MHz by the VHF VCO Q1025.
The 21.7 MHz UHF "sub" second IF signal applied to VHF receiving circuit. The UHF "sub" signal is amplified, filtered, and demodulated, etc., by the VHF receiving cir­cuit, described previously.

VHF Squelch Control

When no VHF carrier is being received, noise at the output of the detector stage in Q1043 is amplified and band-pass filtered by the noise amp section of Q1043, then passes through the noise amplifier Q1051 (2SC4154E) to noise detector D1034 (MC2850). The resulting DC volt­age is applied to pin 93 of main CPU Q1075 (M30620ECGP), which compares the squelch threshold level to that which set by the front panel VHF SQL knob.
While no carrier is received, pin 76 of Q1075 remains "high," turning on the squelch switch Q1076 (RT1N241M) to disable audio output from the speaker.

UHF Squelch Control

When no UHF carrier is being received, noise at the output of the detector stage in Q1034 is amplified and band-pass filtered by the noise amp section of Q1034, then passes through the noise amplifier Q1052 (2SC4154E) to noise detector D1030 (MC2850). The resulting DC volt­age is applied to pin 89 of main CPU Q1075, which com­pares the squelch threshold level to that which set by the front panel UHF SQL knob.
6
Circuit Description
While no carrier is received, pin 75 of Q1075 remains
"high," turning on the squelch switch Q1079 (RT1N241M) to disable audio output from the speaker.

Transmit Signal Path

The speech signal from the microphone passes through
the MIC jack J2002 to AF amplifier Q2011 (M5223AGP) on the PANEL UNT. The amplified speech signal is sub­jected to amplitude limiting by Q2011 (M5223AGP), then passes through the panel interface jacks J2001 and J1002 to MAIN Unit. On the MAIN UNIT, the speech signal passes through buffer amplifier Q1045 (NJM2902V-1/-2) and a low-pass filter network at Q1045 (NJM2902V-3) to deviation control VR1001 (for UHF Tx audio) or VR1002 (for VHF Tx audio).

VHF Transmit Signal Path

The adjusted speech signal from VR1002 is delivered to VHF VCO Q1025, which frequency modulates the transmitting VCO D1025 (HVC200A).
The 35-Watt RF signal passes through a high-pass fil-
ter network, antenna switch D1053 and D1054 (UM9957F), low-pass filter and high-pass filter networks, and then is delivered to the ANT jack.

VHF Tx APC Circuit

A portion of the power amplifier output is rectified by
D1063 (1SS321), D1065 (1SS319) and Q1116 (2SC4154E), then delivered to APC Q1045 (NJM2902V) as a DC voltage which is proportional to the output level of the power amplifier.
The APC Q1045 compares the rectified DC voltage
from the power amplifier and the reference voltage from the main CPU Q1075, producing a control voltage for the Automatic Power Controller Q1114 (RT1P441U) and Q1115 (RT1N241M) which regulates supply voltage to the Pre-Drive amplifier Q1111, Drive amplifier Q1112, and Power amplifier Q1113, so as to maintain stable out­put power under varying antenna loading conditions.
The modulated transmit signal passes through buffer amplifier Q1021 (2SC5374), a low-pass filter network, and another buffer amplifier Q1110 (2SC5374) to another low­pass filter network.
The filtered transmit signal is applied to the Pre-Drive amplifier Q1111 (2SK3074) and Drive amplifier Q1112 (2SK2975), then finally is amplified by Power amplifier Q1113 (2SK3478) up to 50 Watts. This three stage power amplifier’s gain is controlled by the APC circuit.
The 50-Watt RF signal passes through a low-pass filter network, antenna switch D1060 (UM9957F), and another low-pass filter network, and then is delivered to the ANT jack.

UHF Transmit Signal Path

The adjusted speech signal from VR1001 is delivered to UHF VCO Q1024 which frequency modulates the trans­mitting VCO D1022 (HVC200A).
The modulated transmit signal passes through buffer amplifiers Q1020 and Q1110 (both 2SC5374) to a high­pass filter network.
The filtered transmit signal is applied to the Pre-Drive amplifier Q1111 (2SK3074) and Drive amplifier Q1112 (2SK2975), then finally is amplified by Power amplifier Q1113 (2SK3478) up to 35 Watts. This three stage power amplifier’s gain is controlled by the APC circuit.

UHF Tx APC Circuit

A portion of the power amplifier output is rectified by
D1064 (1SS319), D1065 (1SS319) and Q1116 (2SC4154E), then delivered to APC Q1045 (NJM2902V) as a DC voltage which is proportional to the output level of the power amplifier.
The APC Q1045 compares the rectified DC voltage
from the power amplifier and the reference voltage from the main CPU Q1075, producing a control voltage for the Automatic Power Controller Q1114 (RT1P441U) and Q1115 (RT1N241M) which regulates supply voltage to the Pre-Drive amplifier Q1111, Drive amplifier Q1112, and Power amplifier Q1113, so as to maintain stable out­put power under varying antenna loading conditions.

VHF PTT Circuit

When the PTT switch is pressed, pin 46 of sub CPU
Q2007 (M38039FFFP) goes “1V,” which sends the “PTT”
command to the main CPU, Q1075. When it receives the “PTT” command, pin85 of Q1075 goes “high” to control local switch D1050 (DAN235E), filter switch D1051,
D1052, TX switch D1062 (MC2848), and APC switch Q1114/Q1115, which activates the VHF Tx circuit. Mean-
while, pin 86 of Q1075 goes “low,” which disables the VHF Rx circuit.
7
Circuit Description

UHF PTT Circuit

When the PTT switch is pressed, pin 46 of sub CPU
Q2007 (M38039FFFP) goes “1V,” which sends the “PTT”
command to the main CPU, Q1075. When it receives the “PTT” command, pin81 of Q1075 goes “high” to controls local switch D1050, filter switch D1051, D1052, TX switch D1062 and APC switch Q1114/Q1115, which activates the UHF Tx circuit. Meanwhile, pin 82 of Q1075 goes “low,” which disables the UHF Rx circuit.

VHF PLL

A portion of the output from the VHF VCO Q1025 (2SC5006) passes through buffer amplifiers Q1021 (2SC5374) and Q1040 (2SC3120) to the programmable divider section of the PLL IC Q1055 (M64076AGP), which divides the frequency according to the frequency divid­ing data from the main CPU, Q1075. It is then sent to the phase comparator.
The 21.25 MHz frequency of the reference oscillator circuit, made up of X1002 and Q1060 (2SC5374), is di­vided by the reference frequency divider section of Q1055 into 4250 or 3400 parts to become 5 kHz or 6.25 kHz com­parative reference frequencies, which are utilized by the phase comparator.
The phase comparator section of Q1055 compares the phase between the frequency-divided oscillation frequen­cy of the VCO circuit and comparative frequency, and its output is a pulse corresponding to the phase difference. This pulse is integrated by the charge pump and loop fil­ter of Q1055 into a control voltage (VCV) to control the oscillation frequency of the VHF VCO Q1025.

UHF PLL

A portion of the output from the UHF VCO Q1024 (2SC5006) passes through buffer amplifier Q1020 (2SC5374) and Q1038 (2SC3120) to the programmable divider section of the PLL IC Q1055 (M64076AGP), which divides the frequency according to the frequency divid­ing data from the main CPU Q1075. It is then sent to the phase comparator.
The 21.25 MHz frequency of the reference oscillator circuit, made up of X1002 and Q1060 (2SC5374), is di­vided by the reference frequency divider section of Q1055 into 4250 or 3400 parts to become 5 kHz or 6.25 kHz com­parative reference frequencies, which are utilized by the phase comparator.
The phase comparator section of Q1055 compares the phase between the frequency-divided oscillation frequen­cy of the VCO circuit and comparative frequency, and its output is a pulse corresponding to the phase difference. This pulse is integrated by the charge pump and loop fil­ter of Q1055 into a control voltage (VCV) to control the oscillation frequency of the UHF VCO Q1024.

V/V, U/U Local Oscillator

When the V/V or U/U feature is activated, a portion of the 21.25 MHz reference is amplified and multiplied by twelve by Q1026 (2SC3120), then passes through band­pass filter network to buffer amplifier Q1031 (2SC3120), which provides the first local signal for V/V or U/U oper­ation.

Power-on Circuit

When the POWER switch is turned on, pin 16 of main CPU Q1075 goes “low.” When pin 16 of Q1075 goes “low,” pin 61 of Q1075 goes “high” to activate the power switches Q1001 (2SA1301) and Q1002 (RT1N241M), which supply the DC power to the radio.
8

Alignment

Introduction and Precautions

The FT-7100M has been carefully aligned at the facto­ry for the specified performance across the 144 MHz and 430 MHz amateur bands. Realignment should therefore not be necessary except in the event of a component fail­ure. All component replacement and service should be performed only by an authorized VERTEX STANDARD representative, or the warranty policy may be voided.
The following procedures cover the sometimes criti­cal and tedious adjustments that are not normally required once the transceiver has left the factory. However, if dam­age occurs and some parts are replaced, realignment may be required. If a sudden problem occurs during normal operation, it is likely due to component failure; realign­ment should not be done until after the faulty component has been replaced.
We recommend that servicing be performed only by authorized VERTEX STANDARD service technicians, who are experienced with the circuitry and fully equipped for repair and alignment. Therefore, if a fault is suspected, contact the dealer from whom the transceiver was pur­chased for instructions regarding repair. Authorized VER­TEX STANDARD service technicians realign all circuits and make complete performance checks to ensure com­pliance with factory specifications after replacing any faulty components.
Those who do undertake any of the following align­ments are cautioned to proceed at their own risk. Prob­lems caused by unauthorized attempts at realignment are not covered by the warranty policy. Also, VERTEX STAN­DARD must reserve the right to change circuits and align­ment procedures in the interest of improved performance, without notifying owners.
Under no circumstances should any alignment be at­tempted unless the normal function and operation of the transceiver are clearly understood, the cause of the mal­function has been clearly pinpointed and any faulty com­ponents replaced, and the need for realignment deter­mined to be absolutely necessary.

Required Test Equipment

The following test equipment (and thorough familiar­ity with its correct use) is necessary for complete realign­ment. Correction of problems caused by misalignment resulting from use of improper test equipment is not cov­ered under the warranty policy. While most steps do not require all of the equipment listed, the interactions of some adjustments may require that more complex adjustments be performed afterwards. Do not attempt to perform only a single step unless it is clearly isolated electrically from all other steps. Have all test equipment ready before be­ginning, and follow all of the steps in a section in the or­der presented.
r Regulated DC Power Supply: adjustable from 10 to 17
VDC, 15 A r RF Signal Generator with calibrated output level at 500
MHz
r Frequency Counter: ±0.1 ppm accuracy at 500 MHz r AF Signal Generator r SINAD Meter r Oscilloscope r Spectrum Analyzer r Deviation Meter (linear detector) r AF Milivoltmetr r AF Dummy Load: 4 Ohms, 5 W r DC Voltmeter: high impedance r Inline Wattmeter with 5% accuracy at 500 MHz r 50-Ohm non-reactive Dummy Load: 100 watts at 500
MHz r VHF/UHF Sampling Coupler
9
DATA
EXT SP
13.8VDC
Alignment

Alignment Preparation & Precautions

A dummy load and inline wattmeter must be connect­ed to the main antenna jack in all procedures that call for transmission, except where specified otherwise. Correct alignment is not possible with an antenna. After complet­ing one step, read the following step to determine wheth­er the same test equipment will be required. If not, re­move the test equipment (except dummy load and watt­meter, if connected) before proceeding.
Correct alignment requires that the ambient tempera­ture in the repair shop be the same as that of the trans-
Power Supply
10 ~17 V DC, 15A
ceiver and test equipment, and that this temperature be held constant between 68 °F and 86 °F (20 °C ~ 30 °C). When the transceiver is brought into the shop from hot or cold air it should be allowed some time for thermal equal­ization with the environment before alignment. If possi­ble, alignments should be made with oscillator shields and circuit boards firmly affixed in place. Also, the test equip­ment must be thoroughly warmed up before beginning.
Note: Signal levels in dB referred to in alignment are based on
0 dBµ = 0.5 µV. (closed circuit).
Dummy Load
ANT
RF Signal
Generator
Inline Wattmeter
ATT
Deviation
Meter
Frequency
Counter
10
Alignment

PLL Reference Frequency

r Connect the wattmeter, dummy load, and fre-
quency counter to the antenna jack.
r Tune the transceiver to 439.900 MHz, and set the
TX power level to “MID 2.”
r Key the transceiver, and adjust TC1001 on the
MAIN UNIT, if necessary, so the counter fre­quency is within 100 Hz of 439.900 MHz.

VHF Transmitter Deviation

r Connect the wattmeter, dummy load, and devia-
tion meter to the antenna jack.
r Inject a 1 kHz audio signal at a level of 50 mV to
pin 5 of the MIC jack (pin 4 is Ground).
r Key the transmitter on 146.000 MHz. Adjust
VR1002 for 4.0 ±0.5 kHz (for USA version; other versions: 4.5 ± 0.5 kHz) deviation on the devia­tion meter.

UHF Transmitter Deviation

r Leave the wattmeter, dummy load, and deviation
meter connected to the antenna jack.
r Inject a 1 kHz audio signal as a level of 50 mV to
pin 5 of the MIC jack (pin 4 is Ground).
r Key the transmitter on 440.000 MHz. Adjust
VR1001 for 4.0 ±0.5 kHz (for USA version; other versions: 4.5 ± 0.5 kHz) deviation on the devia­tion meter.
VR1001 TC1001VR1002
11
Alignment

Internal System Alignment Routine

This uses a programmed routine in the transceiver which simplifies many complex discrete component set­tings and adjustments using digitally-controlled settings via the front panel’s buttons and LCD indications.
The examples below assume that the transceiver is to be used in a 4-MHz-wide band (144-148 MHz). The facto­ry-default settings for the FT-7100M assume a wider trans­mit frequency range, so a "trick" must be used to set up the frequencies correctly.
m In the Alignment mode, a special memory table
(see below) is temporarily established, providing
pre-set frequencies to be used in the alignment
process.
CH VHF UHF
1 108.000 MHz 360.000 MHz 2 137.000 MHz 390.000 MHz 3 144.000 MHz 430.000 MHz 4 146.000 MHz 440.000 MHz 5 148.000 MHz 450.000 MHz 6 165.000 MHz 460.000 MHz 7 180.000 MHz 480.000 MHz
Note: For transceivers operating on 144-146 MHz,
use more appropriate frequencies, like
145.000/435.000 MHz (CH 4), 146.000/
440.000 MHz (CH 5).
m To enter the Alignment mode, turn the transceiver
off.
Now, short pins 1 and 6 of the MIC jack to Ground
(pin 4). While these two pins are shorted to
ground, press and hold in the HOME key while
turning the transceiver on. m Disconnect the shorting of pins 1 and 6 of the MIC
jack to Ground; the transceiver is now in the
Alignment mode. m In the Alignment mode, each Alignment Menu is
selected by the LOW (increase) and REV (de-
crease) keys; band change (VHF or UHF) is ac-
complished by the BAND key; and adjustment of
the setting is accomplished by rotating the Dial
knob. m Once you have completed adjustment of each re-
quired Alignment Menu item, pressing the TONE
key will lock in that setting. m If the alignment step requires that you “key the
transmitter,” this may be accomplished by short-
ing pin 6 of the MIC jack to Ground. m To save all settings and exit to normal operation,
press the V/M key.

UHF Transmitter Output

r Connect the wattmeter and dummy load to the
antenna jack.
r Enter the Alignment mode, then press the LOW
and/or REV keys on the panel to select “POMAX.”
r Press the BAND key to select “U4 xxx ,” if neces-
sary (xxx = parameter).
r Key the transmitter, and confirm that the output
power is more than 38 Watts.
r Press the LOW and/or REV keys on the panel to
select “PO HI.” Press the BAND key to select “U3 xxx,” if necessary (xxx = parameter).
r Key the transmitter, and rotate the Dial knob so
as to achieve 35 watts (±0.5 W) on the wattmeter.
r Press the LOW key to select “U4 xxx,” if neces-
sary (xxx = parameter).
r Key the transmitter, and rotate the Dial knob so
as to achieve 35 watts (±0.5 W) on the wattmeter.
r Press the LOW key to select “U5 xxx,” if neces-
sary (xxx = parameter).
r Key the transmitter, and rotate the Dial knob so
as to achieve 35 watts (±0.5 W) on the wattmeter.
r Press the LOW and/or REV keys on the panel to
select “PO M1.” Press the BAND key to select “U3 xxx,” if necessary (xxx = parameter).
r Key the transmitter, and rotate the Dial knob so
as to achieve 20 watts (±0.5 W) on the wattmeter.
r Press the LOW key to select “U4 xxx,” if neces-
sary (xxx = parameter).
r Key the transmitter, and rotate the Dial knob so
as to achieve 20 watts (±0.5 W) on the wattmeter.
r Press the LOW key to select “U5 xxx,” if neces-
sary (xxx = parameter).
r Key the transmitter, and rotate the Dial knob so
as to achieve 20 watts (±0.5 W) on the wattmeter.
r Press the LOW and/or REV keys on the panel to
select “PO M2.” Press the BAND key to select “U3 xxx,” if necessary (xxx = parameter).
r Key the transmitter, and rotate the Dial knob so
as to achieve 10 watts (±0.5 W) on the wattmeter.
r Press the LOW key to select “U4 xxx,” if neces-
sary (xxx = parameter).
r Key the transmitter, and rotate the Dial knob so
as to achieve 10 watts (±0.5 W) on the wattmeter.
r Press the LOW key to select “U5 xxx,” if neces-
sary (xxx = parameter).
r Key the transmitter, and rotate the Dial knob so
as to achieve 10 watts (±0.5 W) on the wattmeter.
r Press the LOW and/or REV keys on the panel to
select “PO LO.” Press the BAND key to select “U3 xxx,” if necessary (xxx = parameter).
12
Alignment
r Key the transmitter, and rotate the Dial knob so
as to achieve 5 watt (±0.5 W) on the wattmeter.
r Press the LOW key to select “U4 xxx,” if neces-
sary (xxx = parameter).
r Key the transmitter, and rotate the Dial knob so
as to achieve 5 watt (±0.5 W) on the wattmeter.
r Press the LOW key to select “U5 xxx,” if neces-
sary (xxx = parameter).
r Key the transmitter, and rotate the Dial knob so
as to achieve 5 watt (±0.5 W) on the wattmeter.
r Press the V/M key to save the new settings and
exit.

UHF DCS Deviation

r Connect the wattmeter, dummy load and devia-
tion meter to the antenna jack.
r Enter the Alignment mode, then press the LOW
and/or REV keys on the panel to select “DCS M.”
r Press the BAND key to select “U4 xxx,” if neces-
sary (xxx = parameter).
r Key the transmitter, and rotate the Dial knob so
as to achieve 0.6 kHz (±0.2 kHz) on the deviation meter.
r Press the V/M key to save the new setting and
exit.

UHF Receiver

r Connect the RF signal generator to the antenna
jack, and inject an RF signal from the signal gen­erator at 10 dBµ on the "Memory Channel 1" fre­quency with ±3.5 kHz deviation of a 1 kHz tone.
r Enter the Alignment mode, then press the LOW
and/or REV keys on the panel to select “TUNE 1.”
r Rotate the Dial knob so as to obtain the maximum
numerical value in the memory channel area on the transceiver’s display.
r Inject an RF signal from the signal generator at
10 dBµ on the "Memory Channel 2" frequency with ±3.5 kHz deviation of a 1 kHz tone.
r Press the LOW and/or REV keys on the panel to
select “TUNE 2.”
r Rotate the Dial knob so as to obtain the maximum
numerical value in the memory channel area on the transceiver’s display.
r Inject an RF signal from the signal generator at
10 dBµ on the "Memory Channel 3" frequency with ±3.5 kHz deviation of a 1 kHz tone.
r Press the LOW and/or REV keys on the panel to
select “TUNE 3.”
r Rotate the Dial knob so as to obtain the maximum
numerical value in the memory channel area on the transceiver’s display.
r Inject an RF signal from the signal generator at
10 dBµ on the "Memory Channel 4" frequency with ±3.5 kHz deviation of a 1 kHz tone.
r Press the LOW and/or REV keys on the panel to
select “TUNE 4.”
r Rotate the Dial knob so as to obtain the maximum
numerical value in the memory channel area on the transceiver’s display.
r Inject an RF signal from the signal generator at
10 dBµ on the "Memory Channel 5" frequency with ±3.5 kHz deviation of a 1 kHz tone.
r Press the LOW and/or REV keys on the panel to
select “TUNE 5.”
r Rotate the Dial knob so as to obtain the maximum
indication in the memory channel area on the transceiver’s display.
r Inject an RF signal from the signal generator at
10 dBµ on the "Memory Channel 6" frequency with ±3.5 kHz deviation of a 1 kHz tone.
r Press the LOW and/or REV keys on the panel to
select “TUNE 6.”
r Rotate the Dial knob so as to obtain the maximum
numerical value inthe memory channel area on the transceiver’s display.
r Inject an RF signal from the signal generator at
10 dBµ on the "Memory Channel 7" frequency with ±3.5 kHz deviation of a 1 kHz tone.
r Press the LOW and/or REV keys on the panel to
select “TUNE 7.”
r Rotate the Dial knob so as to obtain the maximum
numerical value in the memory channel area on the transceiver’s display.
r Press the V/M key to save the new settings and
exit.

UHF Discriminator Center Meter Calibration

r Connect the RF signal generator to the antenna
jack, and inject an RF signal from the signal gen­erator at 20 dBµ on 439.9975 MHz (2.5 kHz be­low Memory Channel 4) with ±3.5 kHz deviation of a 1 kHz tone.
r Enter the Alignment mode, then press the LOW
and REV keys on the panel to select “CTR –.”
r Press the BAND key to select “U4 xxx ,” if neces-
sary (xxx = parameter).
r Press the TONE key. r Inject an RF signal from the signal generator at
20 dBµ on 440.0025 MHz (2.5 kHz above Memory Channel 4) with ±3.5 kHz deviation of a 1kHz tone.
r Press the LOW and/or REV keys on the panel to
select “CTR +.”
r Press the TONE key. r Press the V/M key to save the new setting and exit.
13
Alignment

UHF Squelch Threshold Calibration

r Connect the RF signal generator to the antenna
jack, and inject an RF signal from the signal gen-
erator at –13 dBµ on the "Memory Channel 4" fre-
quency with ±3.5 kHz deviation of a 1 kHz tone. r Enter the Alignment mode, then press the LOW
and/or REV keys on the panel to select “SQL S.” r Press the BAND key to select “U4 xxx ,” if neces-
sary (xxx = parameter).
r Press the TONE key. r Press the V/M key to save the new setting and
exit.

UHF Tight Squelch Calibration

r Connect the RF signal generator to the antenna
jack, and inject an RF signal from the signal gen-
erator at 5 dBµ on the "Memory Channel 4" fre-
quency with ±3.5 kHz deviation of a 1 kHz tone. r Enter the Alignment mode, then press the LOW
and/or REV keys on the panel to select “SQL T.” r Press the BAND key to select “U4 xxx ,” if neces-
sary (xxx = parameter).
r Press the TONE key. r Press the V/M key to save the new setting and
exit.

UHF S-Meter (S-1 Level) Calibration

r Connect the RF signal generator to the antenna
jack, and inject an RF signal from the signal gen-
erator at –8 dBµ on "Memory Channel 4" fre-
quency with ±3.5 kHz deviation of a 1 kHz tone. r Enter the Alignment mode, then press the LOW
and/or REV keys on the panel to select “SMT 1.” r Press the BAND key to select “U4 xxx ,” if neces-
sary (xxx = parameter).
r Press the TONE key. r Press the V/M key to save the new setting and
exit.

UHF S-Meter (Full Scale) Calibration

r Connect the RF signal generator to the antenna
jack, and inject an RF signal from the signal gen-
erator at 25 dBµ on "Memory Channel 4" fre-
quency with ±3.5 kHz deviation of a 1 kHz tone. r Enter the Alignment mode, then press the LOW
and/or REV keys on the panel to select “SMT F.” r Press the BAND key to select “U4 xxx ,” if neces-
sary (xxx = parameter).
r Press the TONE key. r Press the V/M key to save the new setting and
exit.

VHF Transmitter Output

r Connect the wattmeter and dummy load to the
antenna jack.
r Enter the Alignment mode, then press the LOW
and/or REV keys on the panel to select “POMAX.”
r Key the transmitter, and confirm that the output
power is more than 53 Watts.
r Press the LOW and/or REV keys on the panel to
select “PO HI.” Press the BAND key to select “V3 xxx,” if necessary (xxx = parameter).
r Key the transmitter, and rotate the Dial knob so
as to achieve 50 watts (±0.5 W) on the wattmeter.
r Press the BAND key to select “V4 xxx,” if neces-
sary (xxx = parameter).
r Key the transmitter, and rotate the Dial knob so
as to achieve 50 watts (±0.5 W) on the wattmeter.
r Press the BAND key to select “V5 xxx,” if neces-
sary (xxx = parameter).
r Key the transmitter, and rotate the Dial knob so
as to achieve 50 watts (±0.5 W) on the wattmeter.
r Press the LOW and/or REV keys on the panel to
select “PO M1.” Press the BAND key to select “V3 xxx,” if necessary (xxx = parameter).
r Key the transmitter, and rotate the Dial knob so
as to achieve 20 watts (±0.5 W) on the wattmeter.
r Press the BAND key to select “V4 xxx,” if neces-
sary (xxx = parameter).
r Key the transmitter, and rotate the Dial knob so
as to achieve 20 watts (±0.5 W) on the wattmeter.
r Press the BAND key to select “V5 xxx,” if neces-
sary (xxx = parameter).
r Key the transmitter, and rotate the Dial knob so
as to achieve 20 watts (±0.5 W) on the wattmeter.
r Press the LOW and/or REV keys on the panel to
select “PO M2.” Press the BAND key to select “V3 xxx,” if necessary (xxx = parameter).
r Key the transmitter, and rotate the Dial knob so
as to achieve 10 watts (±0.5 W) on the wattmeter.
r Press the BAND key to select “V4 xxx,” if neces-
sary (xxx = parameter).
r Key the transmitter, and rotate the Dial knob so
as to achieve 10 watts (±0.5 W) on the wattmeter.
r Press the BAND key to select “V5 xxx,” if neces-
sary (xxx = parameter).
r Key the transmitter, and rotate the Dial knob so
as to achieve 10 watts (±0.5 W) on the wattmeter.
r Press the LOW and/or REV keys on the panel to
select “PO LO.” Press the BAND key to select “V3 xxx,” if necessary (xxx = parameter).
14
Alignment
r Key the transmitter, and rotate the Dial knob so
as to achieve 5 watt (±0.5 W) on the wattmeter.
r Press the BAND key to select “V4 xxx,” if neces-
sary (xxx = parameter).
r Key the transmitter, and rotate the Dial knob so
as to achieve 5 watt (±0.5 W) on the wattmeter.
r Press the BAND key to select “V5 xxx,” if neces-
sary (xxx = parameter).
r Key the transmitter, and rotate the Dial knob so
as to achieve 5 watt (±0.5 W) on the wattmeter.
r Press the V/M key to save the new settings and
exit.

VHF DCS Deviation

r Connect the wattmeter, dummy load and devia-
tion meter to the antenna jack.
r Enter the Alignment mode, then press the LOW
and/or REV keys on the panel to select “DCS M.”
r Press the BAND key to select “V4 xxx,” if neces-
sary (xxx = parameter).
r Key the transmitter, and rotate the Dial knob so
as to achieve 0.6 kHz (±0.2 kHz) on the deviation meter.
r Press the V/M key to save the new setting and
exit.

VHF Receiver

r Connect the RF signal generator to the antenna
jack, and inject an RF signal from the signal gen­erator at 10 dBµ on the "Memory Channel 1" fre­quency with ±3.5 kHz deviation of a 1 kHz tone.
r Enter the Alignment mode, then press the LOW
and/or REV keys on the panel to select “TUNE 1.”
r Rotate the Dial knob so as to obtain the maximum
numerical value in the memory channel area on the transceiver’s display.
r Inject an RF signal from the signal generator at
10 dBµ on the "Memory Channel 2" frequency with ±3.5 kHz deviation of a 1 kHz tone.
r Press the LOW and/or REV keys on the panel to
select “TUNE 2.”
r Rotate the Dial knob so as to obtain the maximum
numerical value in the memory channel area on the transceiver’s display.
r Inject an RF signal from the signal generator at
10 dBµ on the "Memory Channel 3" frequency with ±3.5 kHz deviation of a 1 kHz tone.
r Press the LOW and/or REV keys on the panel to
select “TUNE 3.”
r Rotate the Dial knob so as to obtain the maximum
numerical value in the memory channel area on the transceiver’s display.
r Inject an RF signal from the signal generator at
10 dBµ on the "Memory Channel 4" frequency with ±3.5 kHz deviation of a 1 kHz tone.
r Press the LOW and/or REV keys on the panel to
select “TUNE 4.”
r Rotate the Dial knob so as to obtain the maximum
numerical value in the memory channel area on the transceiver’s display.
r Inject an RF signal from the signal generator at
10 dBµ on the "Memory Channel 5" frequency with ±3.5 kHz deviation of a 1 kHz tone.
r Press the LOW and/or REV keys on the panel to
select “TUNE 5.”
r Rotate the Dial knob so as to obtain the maximum
numerical value in the memory channel area on the transceiver’s display.
r Inject an RF signal from the signal generator at
10 dBµ on the "Memory Channel 6" frequency with ±3.5 kHz deviation of a 1 kHz tone.
r Press the LOW and/or REV keys on the panel to
select “TUNE 6.”
r Rotate the Dial knob so as to obtain the maximum
numerical value in the memory channel area on the transceiver’s display.
r Inject an RF signal from the signal generator at
10 dBµ on the "Memory Channel 7" frequency with ±3.5 kHz deviation of a 1 kHz tone.
r Press the LOW and/or REV keys on the panel to
select “TUNE 7.”
r Rotate the Dial knob so as to obtain the maximum
numerical value in the memory channel area on the transceiver’s display.
r Press the V/M key to save the new setting and
exit.

VHF Discriminator Center Meter Calibration

r Connect the RF signal generator to the antenna
jack, and inject an RF signal from the signal gen­erator at 20 dBµ on 145.9975 MHz (2.5 kHz be­low Memory Channel 4) with ±3.5 kHz deviation of a 1 kHz tone.
r Enter the Alignment mode, then press the LOW
and/or REV keys on the panel to select “CTR –.”
r Press the BAND key to select “V4 xxx,” if neces-
sary (xxx = parameter).
r Press the TONE key. r Inject an RF signal from the signal generator at
20 dBµ on 146.0025 MHz (2.5 kHz above Memory Channel 4) with ±3.5 kHz deviation of a 1 kHz tone.
r Press the LOW and/or REV keys on the panel to
select “CTR +.”
r Press the TONE key. r Press the V/M key to save the new setting and exit.
15
Alignment

VHF Squelch Threshold Calibration

r Connect the RF signal generator to the antenna
jack, and inject an RF signal from the signal gen-
erator at –13 dBµ on the "Memory Channel 4" fre-
quency with ±3.5 kHz deviation of a 1 kHz tone. r Enter the Alignment mode, then press the LOW
and/or REV keys on the panel to select “SQL S.” r Press the BAND key to select “V4 xxx,” if neces-
sary (xxx = parameter).
r Press the TONE key. r Press the V/M key to save the new setting and
exit.

VHF Tight Squelch Calibration

r Connect the RF signal generator to the antenna
jack, and inject an RF signal from the signal gen-
erator at 5 dBµ on the "Memory Channel 4" fre-
quency with ±3.5 kHz deviation of a 1 kHz tone. r Enter the Alignment mode, then press the LOW
and/or REV keys on the panel to select “SQL T.” r Press the BAND key to select “V4 xxx,” if neces-
sary (xxx = parameter).
r Press the TONE key. r Press the V/M key to save the new setting and
exit.

VHF S-Meter (Full Scale) Calibration

r Connect the RF signal generator to the antenna
jack, and inject an RF signal from the signal gen­erator at 25 dBµ on the "Memory Channel 4" fre­quency with ±3.5 kHz deviation of a 1 kHz tone.
r Enter the Alignment mode, then press the LOW
and/or REV keys on the panel to select “SMT F.”
r Press the BAND key to select “V4 xxx,” if neces-
sary (xxx = parameter).
r Press the TONE key. r Press the V/M key to save the new setting and
exit.

DC Voltage Display

r Adjust the DC power supply voltage to 13.8 V. r Enter the Alignment mode, then press the LOW
and/or REV keys on the panel to select “DC IN,” and rotate the Dial knob so as to set the display to 13.8 V
r Press the TONE key. r Press the V/M key to save the new setting and
exit to normal operation.

VHF S-Meter (S-1 Level) Calibration

r Connect the RF signal generator to the antenna
jack, and inject an RF signal from the signal gen-
erator at –8 dBµ on the "Memory Channel 4" fre-
quency with ±3.5 kHz deviation of a 1 kHz tone. r Enter the Alignment mode, then press the LOW
and/or REV keys on the panel to select “SMT 1.” r Press the BAND key to select “V4 xxx,” if neces-
sary (xxx = parameter).
r Press the TONE key. r Press the V/M key to save the new setting and
exit.
16
Circuit Diagram
MAIN Unit (Lot. 1~)
5.57V
(-9.3dBµ) [-8.9dBµ]
13.8V
Power ON:13.0V OFF:13.8V
Power ON:3.46V OFF:0V
<-9.2dBµ> {-6.4dBµ}
13.7V
3.93V
8.9V
4.87V
5.0V
(-3.7dBµ) [-2.7dBµ]
7.44V
7.47V
1.69V
V Main 8.34V
V RX
7.7V
9.0V
5.85V
0.77V 0.51V
7.18V
<+9.4dBµ>
V Sub
0.76V
7.96V
SUB(U/U)
435.1MHz:+4.8dBµ
0.76V
4.85V
0.78V
(U/U)
435.1MHz:+21.0dBµ
7.3V
0.76V
5.95V
(+16.4dBµ)
5.87V
<+28.5dBµ>
SUB(V/V)
145.1MHz:+17.2dBµ
0.72V
4.01V
7.3V
6.78V
8.52V
0.67V
4.62V
V Main
4.56V
U Main
4.37V
(45.05MHZ):+16.0dBµ> (U/U)435.1MHz(180.1MHz):+28.0dBµ
3.81V
U Sub
4.45V
Sub RX
U Sub
3.62V
4.48V
V Sub
4.38V
(V/V)145.1MHz(45.05MHz):+19.6dBµ
V Sub
4.34V
7.95V
(21.7MHZ):+16.0dBµ> (U/U)435.1MHz(21.7MHz):+16.3dBµ
8.27V
6.23V
0.76V
Sub RX
7.4V
V Sub
8.08V
<45.05MHZ:+19.6dBµ>
7.19V
1.12V
(21.7MHZ):+18.4dBµ> (U/U)435.1MHz(21.7MHz):+22.8dBµ
2.37V
1.22V
6.15V
0.72V
U Sub
8.09V
<45.05MHZ:+21.4dBµ> (V/V)145.1MHz(45.05MHz):+21.0dBµ
3.39V
3.9V
4.94V
0.2V
5.5V
0.65V
5.6V
4.54V
5.49V
2.76V
5.32V
0.77V
2.72V
5.33V
1.5V
3.33V (AM)
VHF RX:0V
VHF RX ON
“H”
UHF RX 0V
3.32V (AM) 0V (0)
UHF RX ON “H”
VHF TX
UHF TX
“H”
“H”
4.07V
4.04V
4.07V
2.14V
1.07V
4.06V
4.01V
4.06V
4.03V
1.94V
1.92V
2.22V
VHF DCS ON “H”
1.10V
UHF DCS ON “H”
1.93V
4.06V
4.01V
2.12V
1.06V
1.94V
2.23V
1.11V
4.06V
2.19V
SQL ON “H”
SQL ON “H”
1.94V
1.92V
VHF “L”, UHF “H”
1.10V
1.09V
1.93V
1.91V
2.21V
1.89V
1.91V
1.91V
1.89V
VHF “H” UHF “L”
DTMF TX “L”
PK SQL ON “H”
4.85V
8.92V
3.53V
8.36V
3.53V
VHF AFVR 0~4.73V
UHF AFVR 0~4.73V
13.75V
0V
1.34V
0.81V
6.36V
8.91V
0.49V 1.23V
13.33V
VHF TX(50W):2.35V UHF TX(35W):2.50V
VHF TX(50W):2.10V UHF TX(35W):3.00V
UHF TX(35W):4.00V UHF TX(35W):1.10V
1.95V
1.30V
2.10V
VHF TX(50W):2.1V
2.10V
UHF TX(35W):
2.55V
2.10V
1.35V
<45.05MHZ:+23.8dBµ> (V/V)145.1MHz (400.1MHz):+31.3dBµ
4.77V
3.27V
3.61V
7.33V
8.02V
0.47V
5.57V
8.86V
3.48V
5.6V
0.28V
3.72V
4.37V
0.71V
4.69V
4.83V
1.78V
2.78V
3.38V
2.28V
4.09V
4.95V
8.86V
TX NARROW ON “H”
5.95V
3.4V
4.06V
4.07V
3.92V
3.92V
4.01V
4.07V
FAN ON:0.77V
OFF:0V
FAN ON:11.93V
OFF:13.8V
FAN ON:0V
OFF:13.45V
VHF TX(50W):3.50V UHF TX(35W):3.40V
VHF TX(50W):3.9V
(XX) = MAIN 145.1 MHz [XX] = SUB 145.1 MHz <XX> = MAIN 435.1 MHz {XX} = SUB 435.1 MHz
8.45V
13.11V
5.22V
4.88V
4.88V
4.87V
17
MAIN Unit (Lot. 1~)
Note:
18
Parts Layout
MAIN Unit (Lot. 1~)
B
DCA
E
TA31136FN (Q1034)
M51132FP (Q1096)
1
3SK131 (V12)
M30620ECGP (Q1075)
RT1N241M (N2) (Q1027, 1030,
1064, 1066, 1067, 1070, 1085, 1086, 1087, 1091, 1092, 1093, 1099, 1115,
1119)
2
2SC3120 (HB) (Q1009, 1013, 1014,
1015, 1016, 1038,
1040) 2SC5226 (R22) (Q1012, 1017) 2SC4154E (LE) (Q1051, 1052, 1116,
1118) 2SC5374 (NA) (Q1060, 1110) 2SC5226-4 (Q1010, 1011)
(Q1007) 3SK228 (XR-) (Q1008, 1019,
1023)
RT1P441U (P3) (Q1042, 1114)
TDA2003H (Q1097)
2SA1602A (MF) (Q1069)
CPH6102 (AB) (Q1095)
2SK3074 (WA) (Q1111)
IMD10A (D10) (Q1061, 1062)
2SK2975 (Q1112)
3
1SS319 (A4) (D1064, 1065)
MC2850 (A7) (D1030, 1031, 1032, 1034, 1040)
DAN235E (D1015, 1016, 1018, 1051, 1052) MC2848 (A6) (D1062) 1SS321 (F9) (D1063)
4
MC2846 (D1044)
Side A
19
MAIN Unit (Lot. 1~)
b
1
dca
e
BU4053BCFV
TK10931VT1 (Q1043)
M64076AGP (Q1055)
NJM2902V (Q1045, 1046, 1047, 1088)
2SB1201STP (Q1005)
2SA1602A (MF) (Q1056, 1057)
(Q1094) BU4053BCFV-E2 (Q1094)
M5223AGP (Q1089) M5223AGP (Q1117)
AT24C64N-10SI-1.8-SL722A (Q1090) TDA7233D (Q1098)
2SB1301 (ZQ) (Q1001)
2
RT1N241M (N2) (Q1002, 1018, 1022,
1039, 1044, 1048, 1053, 1054, 1058, 1059, 1071, 1072, 1073, 1074, 1076, 1078, 1079, 1080, 1082, 1083, 1102)
2SC5374 (NA) (Q1020, 1021) 2SC4154E (LE) (Q1006, 1033,
1035, 1037, 1068,
1077, 1100) 2SC5006 (24) (Q1024, 1025) 2SC3120 (HB) (Q1026, 1031) 2SC4400 (RT4) (Q1029, 1032)
M51951AML-600C (51) (Q1063)
CNJM78L05UA (51) (Q1004, 1065)
3
MM1216ENRE (1A) (Q1003)
RT1P441U (P3) (Q1036, 1041,
1049, 1050 )
CPH6102 (AB) (Q1101)
20
MC2850 (A7) (D1041, 1042)
4
Side B
HZM27WA (27A) (D1045, 1046)
DAN235E (D1017, 1050) MC2848 (A6) (D1007, 1019,
1033, 1043)
HZM11N (D1005) HZM5.6NB2 (562) (D1028, 1029,
1038)
Circuit Diagram
MAIN Unit (Lot. 5~)
5.57V
(-9.3dBµ) [-8.9dBµ]
13.8V
Power ON:13.0V OFF:13.8V
Power ON:3.46V OFF:0V
<-9.2dBµ> {-6.4dBµ}
13.7V
3.93V
8.9V
4.87V
5.0V
9.0V
7.18V
7.44V
0.77V
(-3.7dBµ) [-2.7dBµ]
V RX
7.7V
5.85V
<+9.4dBµ>
7.47V
1.69V
V Main 8.34V
V Sub
0.76V
7.96V
SUB(U/U)
435.1MHz:+4.8dBµ
0.76V
(+16.4dBµ)
5.87V
4.85V
0.78V
(U/U)
435.1MHz:+21.0dBµ
0.76V
5.95V
7.3V
<+28.5dBµ>
SUB(V/V)
145.1MHz:+17.2dBµ
0.72V
7.3V
0.51V
6.78V
8.52V
0.67V
4.01V
4.62V
V Main
4.56V
U Main
4.37V
(45.05MHZ):+16.0dBµ> (U/U)435.1MHz(180.1MHz):+28.0dBµ
3.81V
U Sub
4.45V
Sub RX
U Sub
3.62V
4.48V
V Sub
4.38V
V Sub
4.34V
(21.7MHZ):+16.0dBµ> (U/U)435.1MHz(21.7MHz):+16.3dBµ
8.27V
0.76V
Sub RX
7.4V
V Sub
8.08V
7.19V
7.95V
(21.7MHZ):+18.4dBµ> (U/U)435.1MHz(21.7MHz):+22.8dBµ
1.22V
6.15V
0.72V
6.23V
U Sub
8.09V
<45.05MHZ:+21.4dBµ> (V/V)145.1MHz(45.05MHz):+21.0dBµ
3.39V
1.12V
2.37V
3.9V
4.94V
0.2V
5.5V
0.65V
5.6V
4.54V
5.49V
2.76V
5.32V
0.77V
2.72V
5.33V
1.5V
3.33V (AM)
VHF RX:0V
VHF RX ON
“H”
UHF RX 0V
3.32V (AM) 0V (0)
UHF RX ON “H”
VHF TX
UHF TX
“H”
“H”
4.07V
4.04V
2.14V
1.07V
4.07V
4.06V
4.01V
4.06V
1.94V
1.92V
2.22V
VHF DCS ON “H”
1.10V
UHF DCS ON “H”
4.03V
1.93V
4.06V
4.01V
2.12V
1.06V
1.94V
2.23V
1.11V
4.06V
2.19V
SQL ON “H”
SQL ON “H”
1.94V
1.92V
VHF “L”, UHF “H”
1.10V
1.09V
1.93V
1.91V
2.21V
1.89V
1.91V
1.91V
1.89V
VHF “H” UHF “L”
DTMF TX “L”
PK SQL ON “H”
4.85V
8.92V
3.53V
8.36V
3.53V
VHF AFVR 0~4.73V
UHF AFVR 0~4.73V
13.75V
0V
1.34V
0.81V
6.36V
8.91V
0.49V 1.23V
13.33V
VHF TX(50W):2.35V UHF TX(35W):2.50V
VHF TX(50W):2.10V UHF TX(35W):3.00V
UHF TX(35W):4.00V UHF TX(35W):1.10V
1.95V
1.30V
2.10V
VHF TX(50W):2.1V
2.10V
UHF TX(35W):
2.55V
2.10V
1.35V
<45.05MHZ:+23.8dBµ> (V/V)145.1MHz (400.1MHz):+31.3dBµ
4.77V
3.27V
3.61V
(V/V)145.1MHz(45.05MHz):+19.6dBµ
<45.05MHZ:+19.6dBµ>
7.33V
8.02V
0.47V
5.57V
8.86V
3.48V
5.6V
0.28V
3.72V
4.37V
0.71V
4.69V
4.83V
1.78V
2.78V
3.38V
2.28V
4.09V
TX NARROW ON “H”
8.86V
4.95V
5.95V
3.4V
4.06V
4.07V
3.92V
3.92V
4.01V
4.07V
FAN ON:0.77V
OFF:0V
FAN ON:11.93V
OFF:13.8V
FAN ON:0V
OFF:13.45V
VHF TX(50W):3.50V UHF TX(35W):3.40V
VHF TX(50W):3.9V
(XX) = MAIN 145.1 MHz [XX] = SUB 145.1 MHz <XX> = MAIN 435.1 MHz {XX} = SUB 435.1 MHz
8.45V
13.11V
5.22V
4.88V
4.88V
4.87V
21
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