HYT TC-500, Service Manual, Page: 62 / 77

TC-500 Service Manual
61
Transmitter
Item Condition
Measurement Adjustment
Specific-a
tions
/Remarks
Test
equipment
Terminal Parts Method
7.Transmit
frequency
1. TX Center. Turn to
CH13 in manual adjust
mode and press
PTT .
Radio
Communication
Test Set
ANT TC6
Adjust it to center
frequency Error
≤ ±250Hz
8.Max.
Deviat-ion
1. TX Center. Turn to
CH13 in manual adjust
mode and press
PTT
(long press MONI key
to switch N/W).
Radio
Communication
Test Set
LPF: 15kHz
Audio:1kHz
120mV
ANT
MIC
Jack
VR2
Adjust deviation
to: 4.0kHz±200Hz
(Wide)
Check
2.0kHz±200Hz
(narrow)
9. Modulation
Sensitivity
1. TX Center. Turn to
CH13 in manual adjust
mode and press
PTT
(long press MONI key
to switch N/W).
Radio
Communication
Test Set
FILTER:
FILER:
0.3-3.4kHz
Audio:1kHz
12±2mV
ANT
MIC
Jack
Check deviation:
3.0kHz(Wide)
1.5 kHz(narrow)
10. CTCSS
Balance
1. TX Center. CTCSS:
67.0Hz. Turn to CH4 in
manual adjust mode.
Radio
Communication
Test Set
LPF:300Hz
ANT VR3
Adjust VR3,
deviation tested
on condition 1 and
condition 2 are
consistent, the
difference
≤ 200Hz
67.0Hz
CTCSS
2. TX Center. CTCSS:
250.3Hz. Turn to
CH16 in manual adjust
mode and press
PTT .
250.3Hz
CTCSS
11. CTCSS
Deviation
1. TX Center. Turn to
CH4 (wide) and CH4
(narrow) in manual
adjust mode. Adjust by
pressing
PTT or
MONI .
Radio
Communication
Test Set
LPF:300Hz
ANT
Adjust deviation
to:
0.65kHz±100Hz
(Wide)
0.4kHz±100Hz
(Narrow)
12. CDCSS
Deviation
1. TX Center. Turn to
CH5 (wide) and CH7
(narrow) in manual
adjust mode. Adjust by
pressing
PTT or
MONI .
Adjust deviation
to:
0.65kHz±100Hz
(Wide)
0.4kHz±100Hz
(Narrow)