Alinco DR-435 - DR-235 VCO and RX Adjustment Specification; DR-235 Tx Adjustment Specification

51
2) VCO and RX Adjustment Specification
ITEM CONDITION UNIT
Adjustment
Frequency
224.90MHz
TX
MAIN TC101 Adjust so that Tx Frequency
becomes within 224.90MHz±100Hz
VCO
Adjustment
225.00MHz
RX
VCO L503 Adjust so that PD voltage becomes
2.2V
VCO
Confirmation
224.99MHz
TX
VCO Confirm if PD voltage becomes less
than 6.2 V
Rx Signal
Sensitivity
Adjustment
223.50MHz
216.05MHz
223.50MHz
250.05MHz
MAIN L105, L104
L103, L107
L102
Repeatedly adjust so that the Rx
sensitivity becomes in maximum.
Confirm:
At -7dBu SINAD more than 12dB
At -8dBu SINAD more than 12dB
At -3dBu SINAD more than 12dB
Squelch
Adjustment
223.50MHz
SSG OFF
Indication 01
MAIN VR101 Adjust so that the squelch stops at
perfectly close location
S Meter
Adjustment
223.50MHz
SSG20dBu 1KHz
3.5KHz/DEV
MAIN VR102 Adjust so that all the indicator
appears
ADJ.SPOT
ADJUSTING METHOD
3) Tx Adjustment Specification
HI POWER
Adjustment
223.50MHz
HI POWER
MAIN VR103 Adjust to 25.0±1.0W
MID POWER
Adjustment
223.50MHz
MID POWER
MAIN VR104 Adjust to 10.0±1.0W
LOW POWER
Confirmation
223.50MHz
LOW POWER
MAIN Confirm if it becomes 4.5±1.0W
Maximum
Deviation
Adjustment
223.50MHz
MOD
1KHz40mVemf
WIDE
MAIN VR107 4.5±0.1KHz/DEV
Maximum
Deviation
Adjustment
223.50MHz
MOD
1KHz40mVemf
NARROW
MAIN VR105 2.2±0.1KHz/DEV
Mic Gain
Adjustment
223.50MHz
MOD
1KHz4mVemf
WIDE
MAIN VR106 3.0±0.1KHz/DEV
CTCSS
Modulation
Level
Confirmation
223.50MHz
88.5Hz
MAIN 800±300Hz/DEV 3KHz LPF ON
DCS
Modulation
Level
Adjustment
223.50MHz
255 Code
MAIN VR108 800±100Hz/DEV 3KHz LPF ON
1750Hz
Modulation
Level
Confirmation
223.50MHz
1750Hz
MAIN 3.0±0.5KHz/DEV
DTMF
Modulation
Level
Confirmation
223.50MHz
DTMF
Press the V/M
key during TX
MAIN 3.0 ±0.5KHz/DEV
ITEM CONDITION UNIT
ADJ.SPOT
ADJUSTING METHOD
1