Alinco DJ-160T Service Manual page 10

■ ADJUSTMENT
(DJ160T/E)
1. Transmitting Unit (D J-16O T)
Adjustment Point
Item
TC304 (RF PCB)
1. Frequency
adjustment
2. TX Power VR301 (RF PCB)
(Hi Power)
adjustment
VR302 (RF PCB)
(Lo Power)
VR204 (IF PCB)
3. Modulation degree
adjustment
VR203 (IF PCB)
4. Subaudible tone
5. DTMF. VR205 (IF PCB)
2. Receiving Unit (D J-16O T)
item Adjustment Point
•
1. VCO P/D Voltage- ■ L106 (VCO)
adjustment
2. Detection Coil L2Ô2 (IF PCB)
adjustment
. .
3. VHF F R O N TE N D .. L306,.L308, L309,
adjustment
TC305, L311, L312
(RF PCB)
4. S-meter VR202 (IF PCB).
adjustment
All manuals and user guides at all-guides.com
Adjustment Method
Set the unit in the transmission mode at 146.03MHz and
adjustment TC304.
(Transceiver tester, counter) ■
Adjustment VR301 so. that TX power becomes 3W at
146.03MHz. ' . V ;■ < ..
Adjustment VR302 so that TX power becomes 300mW at
146.03MHz. "
Input a signal of 1kHz/50mV into The Mic jack
transmitting at 146.03MHz and adjust VR204 so that you
obtain 4.7kHz/Dev in the transmission mode.
Adjust 88.5kHz by VR203 so that you obtain 800Hz/Dev.
Push [T| in the'transmission mode and adjust VR203 so
that you obtain 3.1 kHz/Dev:
, Adjustment Method
Adjust L106 so that P/D voltage is 2.0V at 146.03MHz
(DC Voltmeter) in the transmission mode.
Input 1kHz, 3.5kHz/Dev. +66dB/* ai 146.05MHz a n d ;;'
adjust L202 so that detection power becomes maximum -'
.
At. 146.03MHz and adjust L306, L308, L309, TC3Ô5, L311,
and L312, so that 12dB SINAD sensitivity becomes
' "
maximum.
Input a signal of 17dB
fi
145.03MHz Turn VR202 so that Full-bar begins to tight.
: ■ ^
- -
- ..................
" ' ' '
,V": '
;
from transceiver tester ait
Spec
146.03MHz ±50Hz
3.0W ± 0.1W ; ■
300mW±50mW •
4.8kHz ±0.1 kHz '
800Hz ± 100Hz
O
3.1 kHz ±0.1 kHz
.....___
_
2.0V : l
O
Under -9 d B ^
17dB/i±1dB/i
"1