2) VCO and RX Adjustment Specification
ITEMCONDITIONUNITADJ SPOTADJUSTING METHOD
Adjustment 440.00MHz MAIN VR110 Adjust so that Tx Frequency
Frequency TX becomes within 440.00MHz?100Hz
VCO 425.00MHz MAIN L503 Adjust so that PD voltage becomes
Adjustment RX 1.7V.
VCO 511.95MHz MAIN Confirm if PD voltage becomes less
Confirmation RX than 9.0 V
Rx Signal 440.05MHz MAIN TC103,TC102 It is a tracking generator from an
Sensitivity L103,L102 antenna connector. -30dBm is
Adjustment 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 450.00M
430.05MHz At -7.5dBu SINAD more than 12dB
440.05MHz At -7.5dBu SINAD more than 12dB
450.05MHz At -7.5dBu SINAD more than 12dB
Squelch 440.05MHz MAIN VR101 Adjust so that the squelch stops at
Adjustment SSG OFF perfectly close location
Indication 01
S Meter 440.05MHz MAIN VR102 Adjust so that all the indicator
Adjustment SSG20dBu 1KHz appears
3.5KHz/DEV
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