
TP620 Service Manual
microphone cloth
0.1mm, one side glue
32
7MHR-1727-09A-W3
558 microphone case
Silicone gel, hardness 40
degrees,orange, no surface
process
1
33
7MHL-7069-01A-W
PT7800 aluminum
bracket
Aluminum alloy (ADC12),
ground, polish,pb-free
1
34
7SMF-020080M-MHH
T-N1
M2*8 club size
thick-headed machine
screw
Hardened
iron,Φ2mm*8mm,metric coarse
thread, Nylokprocessing
2
35
7MHF-7069-02A-W
PT7800 roof cover
board
0.5MM,SUS304,pb-free
1
6. Adjustment and Test
During the maintenance, it is necessary to test and adjust the radio’s technical parameters after changing
components.
6.1. Components for Adjustment
(1) Antenna connector converter
(2) Universal connector
6.2. Adjustment Test Method
6.2.1. Frequency Description
Model
TP620(400-470)
Channel
Low
frequency
Intermediate/low
frequency
Intermediate
frequency
Intermediate/high
frequency
high
frequency
Tx frequency
(
MHz
)
400.025
417.025
435.025
452.025
469.975
Rx frequency
(
MHz
)
400.25
417.25
435.25
452.25
469.95
Model
TP620(134-176)
Channel
Low
frequency
Intermediate/low
frequency
Intermediate
frequency1
Intermediate/high
frequency
high
frequency
Tx frequency
(
MHz
)
136.025
145.025
155.025
162.025
173.975
Rx frequency
(
MHz
)
136.25
145.25
155.25
162.25
173.95
Page 17 of 61
Summary of Contents for TP620
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