ABELL TH-308G VHF Service Manual
- 44 -
1
.
Transmit
(PC mode
1)CH
:
TX center
PTT
:
On
F.
counter
VR200
Adjust to center
frequency
Within ±100Hz
2. Power
(PC mode)
1)CH: TX low
Battery terminal: 7.5V
PTT: ON
Power meter
Ammeter
Antenna
PC
KEY
Adjust to 3.5W
±0.1W
3.
Maximum
DEV
1)CH: TX center
AG:
1KHz/120mV
PTT: ON
Adjust to
±4.2KHz(wide
bandwidth);
±1.8KHz
~
2.2KHz (Narrow
bandwidth)
Narrow bandwidth
check (+
、
- peak
whichever is
maximum)
4.MIC
SENS
1)CH: TX center
AG:
1KHz/12mV
Modulation
Analyzer or
linear detector
(LPF:15KHz)
Oscilloscope
Audio
generator
Audio
voltmeter
Antenna
Speaker
VR101
Check
(+
、
- peak
whichever is
maximum)
±2.2KHz
~
3.6KHz(wide
bandwidth)
±1.1KHz
~
1.8KHz(Narrow
bandwidth)
5.QT DEV
1) CH:
TX
high
QT:67.0Hz
Modulation
Analyzer or
linear detector
(LPF:300Hz)
Oscilloscope
Audio
generator
Audio
voltmeter
VR100
and
PC
Key
Adjust to ±0.75
KHz(wide
bandwidth)
Adjust to ±0.35
KHz(Narrow
bandwidth)
±50Hz
±50Hz
6.DQT
DEV( PC
MODE)
1)DQT: 023N TX
center
Modulation
Analyzer or
linear detector
(LPF:3kHz)
Oscilloscope
Antenna
YR100
and
PC
key
adjust to ±0.75
KHz(wide
bandwidth)
Adjust to ±0.35
KHz(Narrow
bandwidth
±50Hz
±50Hz
7. Battery
level
1) Battery terminal
:
5.8V
Digital
voltmeter
Battery PC
key
Adjust so that the
LED
The LED must
flash
Содержание TH308G
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