Vco And Rx Adjustment Specification - Alinco DR-135 Service Manual

2) VCO and RX Adjustment Specification

ITEM
Adjustment 440.00MHz
Frequency TX
VCO
425.00MHz
Adjustment RX
VCO 511.95MHz
Confirmation RX
Rx Signal 440.05MHz
Sensitivity
Adjustment
430.05MHz
440.05MHz
450.05MHz
Squelch
440.05MHz
Adjustment
SSG OFF
Indication 01
S Meter 440.05MHz
Adjustment SSG20dBu 1KHz
3.5KHz/DEV
CONDITION UNIT
MAIN VR110
MAIN L503
MAIN
MAIN TC103,TC102
MAIN VR101
MAIN VR102
ADJ SPOT ADJUSTING METHOD
Adjust so that Tx Frequency
becomes within 440.00MHz
Adjust so that PD voltage becomes
1.7V.
Confirm if PD voltage becomes less
than 9.0 V
It is a tracking generator from an
L103,L102 antenna connector. -30dBm is
inputted. And when CN109 is seen
with a spectrum analyzer, by the
maximum gain, it becomes as it is
shown in the following figure, and
appearance adjustment is carried
out.
430.00M
At -7.5dBu SINAD more than 12dB
At -7.5dBu SINAD more than 12dB
At -7.5dBu SINAD more than 12dB
Adjust so that the squelch stops at
perfectly close location
Adjust so that all the indicator
appears
± 100Hz
450.00M
45