Alinco DJ-160E, Service Manual

Page: 11 / 35

1. Transmitting Unit (DJ-160E)
item
Adjustment Point Adjustment Method. Spec
1. Frequency ...■■•
adjustment
TC304 (RF PCB)
Set the unit in the.transmission mode at 145.Q3MHz and
adjustment 1C304. ■
(Transceiver tester, counter)
145.03M Hz ± 50Hz
2. TX Power
adjustment
VR301.(RFPCB) .
(Hi Power)
VR302 (RF PCB)
(Lo Power)
Adjustment VR301 so that TX power becomes 3W at
145.99MHz.
Adjustment VR302.so that.TX power becomes 300mW at
145.99MHz. . :
3.1W10.1W ..
300mW±50mW
3. Modulation degree
adjustment
VR204 (IF PCB) Input a signal of 1kHz/50mV into The Mic jack
transmitting at 145.03MHz and adjust VR204 so that you
obtain 4.7kHz/Dev in the transmission mode.
4.7kHz + 0.1kHz
4. Subaudible tone
VR203 (IF PCB)
Transmit at 145.03MHz and adjust VR203 to obtain a .....
frequency moderation of 3.0kHz, making sure that tone .
burst 1750Hz within a range of 1750Hz ± 20Hz. • ... -
3.0kHz ± 0.5kHz
5- DTMF. .. . VR205 (IF PCB) ... Push [T|.in the transmission mode and adjust VR205 so...
that you obtain 3.1 kHz/Dev.
3.1 kHz ± 0.1kHz
2. Receiving Unit (DJ-160E)
Item
Adjustment Point :
/
x
; :
i Adjustment M e t h o d r;.
- .
Spec
1. VCO P/D Voltage
adjustment
L106 (VCO) Adjust L106 so that P/D Voltage is 2.0V at 145.03MHz •
(DC Voltmeter) in the transmission mode.
2.0V ±0.1V: ;; ■
3 ;
2. Detection Coil
.. adjustment
L202 (IF PCB) Input. 1kHz; 3.5kHz/Dov. +66dB/* at 145.03MHz and
adjust L202 so that detection power becomes maximum.
. _
. .. ■
3. VHF FRONT END
• - adjustment-------- ---
L306, L308, L309,
TC305, L311, L312-
(RF PCB)
At 145.95MHz and adjust L306.. L308, L309, TC305, L311,
and L312, so that 12dB SINAD sensitivity becomes
maximum. . .. ■
under - 9dB/*.
4. S-meter
adjustment - - .....
VR202 (IF PCB) ,
Input a signal of 17dB^ from transceiver tester at
145.95MHz Turn VR202 so that Full-bar begins to tight. -
17dB/t±1dB/i -
- i n -