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Table of Contents
Page
Specifications 3
Test and Alignment Procedure 8
Block Diagram 13
Schematic Diagram 14
Printed Circuit Board 23
Channel Frequency Charts 25
Parts List 40
Semiconductor Voltage Chart 45
Semiconductor Lead Assignment and Block Diagram 53
Exploded View Parts List 56
Exploded View 57
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Frequency Range………………………………...…………………………..……………......25.615 to 30.105 MHz
FrequencyControl………………………………………………………………………………..…………..…….……PLL
Operating Temperature Range……………………………………..……..……………………………-10° / +50°C
DC Input Voltage…………………………………………………....………………………..………....9.0 V DC ±15%
Size………………………………………………………………….……..………..….…140(L) X 60(W) X 30(H) mm
Weight………………………………………………………………………………..…………..……...……..……0.50 kg
2. RECEIVER
Receiving System……………………………….…………………………....Dual Conversion Super Heterodyne
Intermediate Frequency…………………………………………...…….…1
Sensitivity……………………………………….…..............................….0.5 µV for 20 db SINAD in FM mode
Audio Distortion……………………………………………………….….……..…………….Less Than 8% @ 1 KHz
Image Rejection……………………………………….…………………..………………………………………...60 dB
Adjacent Channel Rejection………………………………………….…………………………………………....60 dB
Signal/ Noise Ratio…………………………….…………………………….…………………………………..….45 dB
Current Drain at standby……………………….…………………………………………………………..……..60 mA
3. TRANSMITTER
Output Power…………………………………………………………………………………..……...….4W @ 9.0 V DC
Modulation………………………………………………………………..………….…...………FM: 1.6 KHz ±0.2 KHz
Frequency response…………………………………………….…................................From 300 Hz to 3.0 KHz
Output impedance………………………………………………………………………………RF 50 ohm Unbalance
Signal/ Noise Ratio…………………………………………………………………………………..………..40 dB MIN
Current Drain…………………………………………………………………………………………….….…….1300 mA
st
IF: 10.695 MHz, 2nd IF: 455 MHZ
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OPERATION INSTRUCTIONS
Having properly installed your batteries and hooked-up the antenna, you are now ready to operate your radio for
optimum reception and voice transmission.
Turn the power “ON” with ON/OFF switch.
Set the desired channel.
Adjust the squelch control knob to reduce any undesirable background noise when no signal is being received. To
do this, select a channel where no signal are present, or wait until signals cease on your channel. Then, rotate
the squelch control knob clockwise to a point where the background noise disappears.
Note: When the squelch is set properly, the speaker will remain quiet until a signal is
received. In order to receive weak signals, do not set the squelch too high.
Adjust the volume to the desired listening level.
To Transmit
Press and hold the push-to-talk button. Speak slowly and clearly in a normal voice two to three inches from the
microphone. A buit-in modulation control circuit will automatically adjust the microphone input level. There is no
need to speak loudly.
To Receive
Release the push-to-talk button.
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THEORY OF OPERATIONS
TRANSMITTER
A. RF Amplification
The output of double AMP Q201 is fed through tuning T203 and T204 to the base of pre driver AMP Q202. The
output is then supplied to RF driver AMP Q203. The output of Q203 is supplied with tuning circuit L204 and C214,
C215, C216 and goes to the base of final RF AMP Q204. The output of Q204 is supplied to the antenna through
L-C tuning circuit.
B. Circuit for Suppression of Spurious Radiation
The tuning circuit between the output of final AMP Q204 and antenna, 5-stage “PHI” network C221, C219, C220,
L206, C223, C245, L207, C241, C228, C240, L208, C242, C230, C229, L209, C234, C233, C232, L210, C243,
C235, C236 serves as a spurious radiation suppressor . This network also serves to match the impedance
between TX power AMP Q204 and the antenna.
C. Circuit for Limiting Power
After finished all alignment, the constant voltage supply circuit limits the available power 4 W or slightly less.
RV501 and corresponding three transistors Q509, Q502, Q501 control supply voltage of RF amplifier and other
circuits.
Tune all the trimmer parts for maximum indication of RF power meter and adjust RV501 to make 4 w indication
of RF power meter.
The tuning is adjusted so that the actual power is from 3.8 to 4.0 W. There are no other additional controls for
adjusting the TX output power.
D. Modulation Control
a. FM
The mic input is fed to audio amplifier IC KIA324 which drives modulation varicap diode D302 in the VCO circuit.
RV701 limits the incoming modulation audio levels to inhibit over modulation. While reading the modulation factor
on the modulation analyzing equipment, adjust RV701 shall not exceed +/-1.6 KHz/Dev. After 20 dB up from
1.25 KHz/1.2 KHz/Dev. Audio level
b. AM
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Modulation signal is fed to audio amplifier IC KIA324 and goes to TX voltage regulate circuit Q509, Q502, Q501 to
make nominal signal level to achieve wanted modulation. To control incoming audio signal, R272 and
corresponding ALC circuit limits the modulation shall not exceed +/-60% adjust RV702 +/-60% modulation under
1.0 KHz AF 60% mod plus 20 dB of audio signal.
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E. Receiver
CB receiver is dual conversion supper-heterodyne type with the first IF 10.695 MHz and second IF 455 KHz.
Receiver is separated two blocks, 1
The PLL synthesizer supplies first local frequency 16.270 ~ 16.710 MHz.(for EU) and 16.90625 MHz ~ 17.29625
MHz (for UK) With the provided first local frequencies Q102,Q103 mixes the incoming RF signal to generate first
IF signal. Mixed signals were filtered with the CF101 (10.695 MHz) crystal filter and other tuning circuits. Output
signal of mixer is filtered with CF102 (455 KHz ceramic filter). The 455 KHz signal from the 2
amplified and limits internally. After amplification the signals fed the quadrature detector loop T104. Then we can
see the recovered audio signals on Pin 12 for FM and Pin 13 for AM of IC1.
st
IF section and 2nd IF section.
nd
IF filter was
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TROUBLE SHOOTING HINTS
Symptom Probable Cause Remedy
Unit does not work
at all
No output from
speaker at all
• Defective power switch VR601.
• Empty Battery.
• Broken wire Battery.
• Defective D501.
• Defective external speaker jack.
• Wire speaker open.
• Defective internal speaker.
• Defective VR601, IC601, Q601 other components.
• Replace
• Replace
• Replace
• Replace
• Repair or replace
• Replace
• Replace
• Replace the defective
components.
No noise on
speaker
Squelch does not
work
No modulation
LCD display does
not work
• Measure all the voltage of IC601,102 with voltage
chart
Connect RF power meter
With dummy load to
spectrum analyzer through
coupler /-40 dB
Attenuator to EXT-ANT jack
on the set
(Figure 4).
Connect dummy load and
frequency counter though
coupler to RF power meter.
Connect RF power meter to
EXT-ANT jack on the set
(Figure 5).
Connect dummy load and
oscilloscope through
Coupler to RF power meter
connect audio generator to
microphone jack
(Figure 6).
At no modulation,
compare the level o
fundamental frequency
to the level of harmonic
frequency. Suppression
of the 2
frequency level must be
X302 Be sure that the
indication of the
transmitter frequency is
27.185MHz±300Hz on
the frequency counter.
RV501 Adjust until
3.6-4 Watts
nd
harmonic
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Figure 3
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Figure 4
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Auto Squelch adjustment
MIC : Receive
Volume : 600mV
Squelch : Auto Squelch on
CH selector : 19
3
RFSG:27.185MHz, 1kHZ
1uV, 1.2K DEV.
Connect RF signal
generator to EXT-ANT
Jack. Connect SSVM and
distortion meter to EXT
speaker jack with 8 ohm
dummy load
(Figure 7).
Connect RF signal
generator to EXT-ANT
Jack. Connect SSVM and
distortion meter to EXT
speaker jack with 8 ohm
dummy load
(Figure 7).
RV101 Adjust until the audio
output appears.
RV103 Adjust until the audio
output disappears.
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Figure 5
Figure 6
Figure 7
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T
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PLL CIRCUIT BLOCK DIAGRAM
1. INTRODUCTION
The frequencies for transmitter and receiver first local frequencies are all derived from a single 10.240 MHz
crystal by means of a phase locked loop. The first local oscillator frequencies are 16.270 MHz (CH 1) to 16.710
MHz (CH 40) for EU and 16.90625 MHz (CH 1) to 17.29625 MHz (CH 40) for UK. The second local frequency is
fixed at 10.240 MHz to generate second IF 455 KHz. During transmit, The VCO of the PLL operates 13.4825 MHz
(CH 1) to 13.7025 MHz (CH 40) for EU, 13.800625 MHz (CH 1) to 13.995625 MHz (CH 40) for UK the VCO
frequency goes to the double circuit Q201, T203, T204 which doubles the frequency to generate 26.965 MHz (CH
1) to 27.405 MHz (CH 40) for EU and 27.60125 MHz (CH 1) to 27.99125 MHz (CH 40) for UK
Q 201
VCO
T203,T204
Doubler
o Transmitter
13.4825 MHz (CH 1) EU 26.965 MHz (CH 1)
13.7025 MHz (CH 40) EU 27.405 MHz (CH 40)
13.800625 MHz (CH 1) UK 27.60125 MHz (CH 1)
13.995625 MHz (CH 40) UK 27.99125 MHz (CH 40)
The VCO operating frequency for the receiver is 16.270, 16.90625 MHz (CH 1) to 16.710, 17.29625 MHz (CH 40)
as the first local oscillator, injected through the buffer AMP Q302 into the first fed balanced mixer Q102, Q103.
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2. BASIC SYNTHESIZER SCHEME
The crystal frequency (10.240MHz) is divided by 1800 times to make 2.5 KHz which is fed to one side of the
phase detector. The VCO output is divided by a programmable divider, and fed to other side of the phase
detector Pin 11 of IC302. The feedback loop is closed by passing the phase detector output through an active low
pass filter and using the output to control the VCO frequency through varicap diode D301.
Under locked conditions, both of phase detector input signal must be indential at 2.5 KHz. The VCO frequency is
then given by:
FVCO / N = 0.0025 MHz or FVCO = 0.0025 x N MHz
Since “N” is an integer, the VCO frequency can be stepped up with 2.5 KHz increments. By suitable choice of “N”
the desired output frequency can be obtained.
Channel 1 Channel 40
Function
N FVCO N FVCO
Transmit 5393 13.4825 5481 13.7025
EU
Receive 6508 16.2700 6684 16.7100
Transmit 5520.25 13.800625 5598.25 13.995625
UK
Receive 6762.50 16.90625 6918.5 17.29625
(SEE TABLE FOR OTHER CHANNELS)
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The VCO frequency goes to the double circuit, which doubles the incoming signals.
Transmit
_______
Transmit
_______
Since all frequencies are obtained from the crystal controlled PLL oscillator, all outputs are coherent with the
CH 1, 13.4825 MHz
CH 1, 13.800625 MHz
CH 40, 13.7025 MHz
CH 40, 13.995625 MHz
Double output Frequency
26.965 MHz
27.60125 MHz
27.405 MHz
27.99125 MHz
crystal oscillator frequency and maintaining the same percentage accuracy.
INTERNAL BLOCK DIAGRAM
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DIVIDE RATIO, VCO RX/TX FREQUENCIES FOR EACH CHANNEL OF “EU”
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3. DESCRIPTIONS OF EACH BLOCK
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A. Introduction
The synthesizer is implemented with the following
Components:
- PLL IC (IC302)
- X-TAL (X302)
- VCO, VARICAP DOIDE (D301)
IC302 is a cmos LSI that includes most of PLL block and driver, the Q301, C305, C306, C304, C301 and T302,
Varicap diode D301 are clapp oscillator circuit to operate as a VCO of the IC302. Q301 is a switching transistor to
connect or disconnect the tuning capacitor in the VCO oscillator tank circuit for transmitter or receiver. Q304
works as a buffer AMP for RX local frequencies (16 MHz) and TX generating frequencies (13 MHz).
B. Reference frequency
The crystal, X302 (4.50 MHz) and other components of IC302 can make a reference frequency oscillator with
internal amplifier.
C. VCO
Q301 and surrounding parts are consisting a clapp oscillator works as a VCO of IC302. the VCO can be oscillate
over the required of 13.4825 MHz to 17.29625 MHz
D. Phase detector and VCO control
The detector is a digital phase comparator which compares the phase of the reference signal with programmable
divider output square waves and develops a series of pulses whose DC level depends on the phase error of each
signal.
E. Transmitter/Receiver buffer AMP
Output signal of Q301 is fed into buffer AMP Q302,
F. Transmitter doubler
The output signals of Q302 goes to an amplifier with tuning circuit Q201, T203, T204 which doubles incoming 13
MHz signals.
G. Switching of tuning capacitor in VCO
The VCO circuit must tune with a wide rang of frequencies 13.4825 ~ 13.7025 MHz (EU), 13.800625 ~
13.995625 MHz (UK) for transmitter and 16.270~16.710 MHz (EU), 16.90625 ~ 17.29625 MHz (UK) for receiver.
To comply above range of VCO, the tuning capacitance should switched for transmission or reception.
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H. Receiver local oscillator outputs
First Mixer:
The secondary output signals is injected to the sources of 1
Second Mixer:
The output of 10.24 MHz oscillator circuit with X101 is injected into the IF IC internally. Incoming
IF signal and 10.24 MHz are mixed inside the IF IC to extract 2
signals are recovered with the way of quadrature detector, AM signals are recovered with envelope
detector.
4. FREQUENCY STABILITY
LET: Fo = Crystal oscillator frequency
Fr = Phase detector reference frequency
Fvco = VCO frequency
Ft = Transmit frequency
Then: Fr = Fo/1800
And under locked conditions: Fr = Fvco / N
WHERE, “N” is the programmable divider divide ratio.
THEN: Fvco = N X Fr
From which it can be seen, the percentage error in Ft is the same as the percentage error in Fo. The stability of
the crystal oscillator is determined primarily by the crystal itself and having lesser deviation by the active and
passive components of the oscillator. The choice of crystal and component is such that the required frequency
stability is maintained over the required voltage
and temperature rang.
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st
mixer Q102, Q103 in the 1st IF mixer section
nd
IF signal 455 KHz. FM,AM audio
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Printed Circuit Board
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FREQUENCY TABLE FOR EUROPEAN
1. Frequencies for E1 band (Italy 40CH AM / FM 4W)
CH Frequency (MHz) Modulation CH Frequency (MHz) Modulation
1 26.965 AM / FM 21 27.215 AM / FM
2 26.975 AM / FM 22 27.225 AM / FM
3 26.985 AM / FM 23 27.255 AM / FM
4 27.005 AM / FM 24 27.235 AM / FM
5 27.015 AM / FM 25 27.245 AM / FM
6 27.025 AM / FM 26 27.265 AM / FM
7 27.035 AM / FM 27 27.275 AM / FM
8 27.055 AM / FM 28 27.285 AM / FM
9 27.065 AM / FM 29 27.295 AM / FM
10 27.075 AM / FM 30 27.305 AM / FM
11 27.085 AM / FM 31 27.315 AM / FM
12 27.105 AM / FM 32 27.325 AM / FM
13 27.115 AM / FM 33 27.335 AM / FM
14 27.125 AM / FM 34 27.345 AM / FM
15 27.135 AM / FM 35 27.355 AM / FM
16 27.155 AM / FM 36 27.365 AM / FM
17 27.165 AM / FM 37 27.375 AM / FM
18 27.175 AM / FM 38 27.385 AM / FM
19 27.185 AM / FM 39 27.395 AM / FM
20 27.205 AM / FM 40 27.405 AM / FM
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2. Frequencies for I2 band (Italy 36CH AM / FM 4W)
CH Frequency (MHz) Modulation CH Frequency (MHz) Modulation
1 26.965 AM / FM 19 27.185 AM / FM
2 26.975 AM / FM 20 27.205 AM / FM
3 26.985 AM / FM 21 27.215 AM / FM
4 27.005 AM / FM 22 27.225 AM / FM
5 27.015 AM / FM 23 27.255 AM / FM
6 27.025 AM / FM 24 27.245 AM / FM
7 27.035 AM / FM 25 27.265 AM / FM
8 27.055 AM / FM 26 26.875 AM / FM
9 27.065 AM / FM 27 26.885 AM / FM
10 27.075 AM / FM 28 26.895 AM / FM
11 27.085 AM / FM 29 26.905 AM / FM
12 27.105 AM / FM 30 26.915 AM / FM
13 27.115 AM / FM 31 26.925 AM / FM
14 27.125 AM / FM 32 26.935 AM / FM
15 27.135 AM / FM 33 26.945 AM / FM
16 27.155 AM / FM 34 26.955 AM / FM
17 27.165 AM / FM 35 26.855 AM / FM
18 27.175 AM / FM 36 26.865 AM / FM
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3. Frequencies for DE band (Germany 80CH FM 4W 12CH AM 1W )
CH Frequency (MHz) Modulation CH Frequency (MHz) Modulation
1 26.965 FM 41 26.565 FM
2 26.975 FM 42 26.575 FM
3 26.985 FM 43 26.585 FM
4 27.005 AM / FM 44 26.595 FM
5 27.015 AM / FM 45 26.605 FM
6 27.025 AM / FM 46 26.615 FM
7 27.035 AM / FM 47 26.625 FM
8 27.055 AM / FM 48 26.635 FM
9 27.065 AM / FM 49 26.645 FM
10 27.075 AM / FM 50 26.655 FM
11 27.085 AM / FM 51 26.665 FM
12 27.105 AM / FM 52 26.675 FM
13 27.115 AM / FM 53 26.685 FM
14 27.125 AM / FM 54 26.695 FM
15 27.135 AM / FM 55 26.705 FM
16 27.155 FM 56 26.715 FM
17 27.165 FM 57 26.725 FM
18 27.175 FM 58 26.735 FM
19 27.185 FM 59 26.745 FM
20 27.205 FM 60 26.755 FM
21 27.215 FM 61 26.765 FM
22 27.225 FM 62 26.775 FM
23 27.255 FM 63 26.785 FM
24 27.235 FM 64 26.795 FM
25 27.245 FM 65 26.805 FM
26 27.265 FM 66 26.815 FM
27 27.275 FM 67 26.825 FM
28 27.285 FM 68 26.835 FM
29 27.295 FM 69 26.845 FM
30 27.305 FM 70 26.855 FM
31 27.315 FM 71 26.865 FM
32 27.325 FM 72 26.875 FM
33 27.335 FM 73 26.885 FM
34 27.345 FM 74 26.895 FM
35 27.355 FM 75 26.905 FM
36 27.365 FM 76 26.915 FM
37 27.375 FM 77 26.925 FM
38 27.385 FM 78 26.935 FM
39 27.395 FM 79 26.945 FM
40 27.405 FM 80 26.955 FM
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4. Frequencies for D2 band (Germany 40CH FM 4W 12CH AM 1W )
CH Frequency (MHz) Modulation CH Frequency (MHz) Modulation
1 26.965 FM 21 27.215 FM
2 26.975 FM 22 27.225 FM
3 26.985 FM 23 27.255 FM
4 27.005 AM / FM 24 27.235 FM
5 27.015 AM / FM 25 27.245 FM
6 27.025 AM / FM 26 27.265 FM
7 27.035 AM / FM 27 27.275 FM
8 27.055 AM / FM 28 27.285 FM
9 27.065 AM / FM 29 27.295 FM
10 27.075 AM / FM 30 27.305 FM
11 27.085 AM / FM 31 27.315 FM
12 27.105 AM / FM 32 27.325 FM
13 27.115 AM / FM 33 27.335 FM
14 27.125 AM / FM 34 27.345 FM
15 27.135 AM / FM 35 27.355 FM
16 27.155 FM 36 27.365 FM
17 27.165 FM 37 27.375 FM
18 27.175 FM 38 27.385 FM
19 27.185 FM 39 27.395 FM
20 27.205 FM 40 27.405 FM
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5. Frequencies for EU band (Europe 40CH FM 4W 40CH AM 1W)
CH Frequency (MHz) Modulation CH Frequency (MHz) Modulation
1 26.965 AM / FM 21 27.215 AM / FM
2 26.975 AM / FM 22 27.225 AM / FM
3 26.985 AM / FM 23 27.255 AM / FM
4 27.005 AM / FM 24 27.235 AM / FM
5 27.015 AM / FM 25 27.245 AM / FM
6 27.025 AM / FM 26 27.265 AM / FM
7 27.035 AM / FM 27 27.275 AM / FM
8 27.055 AM / FM 28 27.285 AM / FM
9 27.065 AM / FM 29 27.295 AM / FM
10 27.075 AM / FM 30 27.305 AM / FM
11 27.085 AM / FM 31 27.315 AM / FM
12 27.105 AM / FM 32 27.325 AM / FM
13 27.115 AM / FM 33 27.335 AM / FM
14 27.125 AM / FM 34 27.345 AM / FM
15 27.135 AM / FM 35 27.355 AM / FM
16 27.155 AM / FM 36 27.365 AM / FM
17 27.165 AM / FM 37 27.375 AM / FM
18 27.175 AM / FM 38 27.385 AM / FM
19 27.185 AM / FM 39 27.395 AM / FM
20 27.205 AM / FM 40 27.405 AM / FM
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6. Frequencies for CE band (CEPT 40CH FM 4W)
CH Frequency (MHz) Modulation CH Frequency (MHz) Modulation
1 26.965 FM 21 27.215 FM
2 26.975 FM 22 27.225 FM
3 26.985 FM 23 27.255 FM
4 27.005 FM 24 27.235 FM
5 27.015 FM 25 27.245 FM
6 27.025 FM 26 27.265 FM
7 27.035 FM 27 27.275 FM
8 27.055 FM 28 27.285 FM
9 27.065 FM 29 27.295 FM
10 27.075 FM 30 27.305 FM
11 27.085 FM 31 27.315 FM
12 27.105 FM 32 27.325 FM
13 27.115 FM 33 27.335 FM
14 27.125 FM 34 27.345 FM
15 27.135 FM 35 27.355 FM
16 27.155 FM 36 27.365 FM
17 27.165 FM 37 27.375 FM
18 27.175 FM 38 27.385 FM
19 27.185 FM 39 27.395 FM
20 27.205 FM 40 27.405 FM
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7. Frequencies for UK band (England 40CH FM 4W + CEPT 40CH FM 4W)
England Frequencies CEPT Frequencies
CH Frequency (MHz) Modulation CH Frequency (MHz) Modulation
1 27.60125 FM 1 26.965 FM
2 27.61125 FM 2 26.975 FM
3 27.62125 FM 3 26.985 FM
4 27.63125 FM 4 27.005 FM
5 27.64125 FM 5 27.015 FM
6 27.65125 FM 6 27.025 FM
7 27.66125 FM 7 27.035 FM
8 27.67125 FM 8 27.055 FM
9 27.68125 FM 9 27.065 FM
10 27.69125 FM 10 27.075 FM
11 27.70125 FM 11 27.085 FM
12 27.71125 FM 12 27.105 FM
13 27.72125 FM 13 27.115 FM
14 27.73125 FM 14 27.125 FM
15 27.74125 FM 15 27.135 FM
16 27.75125 FM 16 27.155 FM
17 27.76125 FM 17 27.165 FM
18 27.77125 FM 18 27.175 FM
19 27.78125 FM 19 27.185 FM
20 27.79125 FM 20 27.205 FM
21 27.80125 FM 21 27.215 FM
22 27.81125 FM 22 27.225 FM
23 27.82125 FM 23 27.255 FM
24 27.83125 FM 24 27.235 FM
25 27.84125 FM 25 27.245 FM
26 27.85125 FM 26 27.265 FM
27 27.86125 FM 27 27.275 FM
28 27.87125 FM 28 27.285 FM
29 27.88125 FM 29 27.295 FM
30 27.89125 FM 30 27.305 FM
31 27.90125 FM 31 27.315 FM
32 27.91125 FM 32 27.325 FM
33 27.92125 FM 33 27.335 FM
34 27.93125 FM 34 27.345 FM
35 27.94125 FM 35 27.355 FM
36 27.95125 FM 36 27.365 FM
37 27.96125 FM 37 27.375 FM
38 27.97125 FM 38 27.385 FM
39 27.98125 FM 39 27.395 FM
40 27.99125 FM 40 27.405 FM
Model No:
H 520 PLUS
Rev. Date:
Created by: Approved by: Rev.No:
For Stage: Release Date: Page: 31 Of 57
Model No: 3420 Drawing No:
Customer :
8. Frequencies for PL band (Poland 40CH AM / FM 4W Polish Frequencies –
5kHz)
CH Frequency (MHz) Modulation CH Frequency (MHz) Modulation
1 26.960 AM / FM 21 27.210 AM / FM
2 26.970 AM / FM 22 27.220 AM / FM
3 26.980 AM / FM 23 27.250 AM / FM
4 27.000 AM / FM 24 27.230 AM / FM
5 27.010 AM / FM 25 27.240 AM / FM
6 27.020 AM / FM 26 27.260 AM / FM
7 27.030 AM / FM 27 27.270 AM / FM
8 27.050 AM / FM 28 27.280 AM / FM
9 27.060 AM / FM 29 27.290 AM / FM
10 27.070 AM / FM 30 27.300 AM / FM
11 27.080 AM / FM 31 27.310 AM / FM
12 27.100 AM / FM 32 27.320 AM / FM
13 27.110 AM / FM 33 27.330 AM / FM
14 27.120 AM / FM 34 27.340 AM / FM
15 27.130 AM / FM 35 27.350 AM / FM
16 27.150 AM / FM 36 27.360 AM / FM
17 27.160 AM / FM 37 27.370 AM / FM
18 27.170 AM / FM 38 27.380 AM / FM
19 27.180 AM / FM 39 27.390 AM / FM
20 27.200 AM / FM 40 27.400 AM / FM
Model No:
H 520 PLUS
Rev. Date:
Created by: Approved by: Rev.No:
For Stage: Release Date: Page: 32 Of 57
Model No: 3420 Drawing No:
Customer :
9. Frequencies for RU band (Russia 400CH AM / FM 4W)
Created by: Approved by: Rev.No:
For Stage: Release Date: Page: 38 Of 57
Model No: 3420 Drawing No:
Customer :
11. Frequencies for PC band (Private Channels AM / FM 4W)
CH Frequency (MHz) CH Frequency (MHz)
1 25.645 AM / FM 26 27.895 AM / FM
2 25.695 AM / FM 27 27.945 AM / FM
3 25.745 AM / FM 28 27.995 AM / FM
4 25.795 AM / FM 29 28.045 AM / FM
5 25.845 AM / FM 30 28.095 AM / FM
6 26.095 AM / FM 31 28.345 AM / FM
7 26.145 AM / FM 32 28.395 AM / FM
8 26.195 AM / FM 33 28.445 AM / FM
9 26.245 AM / FM 34 28.495 AM / FM
10 26.295 AM / FM 35 28.545 AM / FM
11 26.545 AM / FM 36 28.795 AM / FM
12 26.595 AM / FM 37 28.845 AM / FM
13 26.645 AM / FM 38 28.895 AM / FM
14 26.695 AM / FM 39 28.945 AM / FM
15 26.745 AM / FM 40 28.995 AM / FM
16 26.995 AM / FM 41 29.245 AM / FM
17 27.045 AM / FM 42 29.295 AM / FM
18 27.095 AM / FM 43 29.345 AM / FM
19 27.145 AM / FM 44 29.395 AM / FM
20 27.195 AM / FM 45 29.445 AM / FM
21 27.445 AM / FM 46 29.695 AM / FM
22 27.495 AM / FM 47 29.745 AM / FM
23 27.545 AM / FM 48 29.795 AM / FM
24 27.595 AM / FM 49 29.845 AM / FM
25 27.645 AM / FM 50 29.895 AM / FM
Model No:
H 520 PLUS
Rev. Date:
Created by: Approved by: Rev.No:
For Stage: Release Date: Page: 39 Of 57
Model No: 3420 Drawing No:
Customer :
Model No:
H 520 PLUS
Rev. Date:
Part list
Code No Name Description O’ty Reference No
501-900019AB 53420EA(EXT ANT CAR ADAPT ASSY H-520 PLUS 1
911-110037GH 0301017Z(RES. FILM) 100 1/ 2W 5% ST MINI 1 SUB; R905A