Re: [Johnson] Valiant I crystal oscillator won't unkey
WA5VGO
hbrnut at suddenlink.net
Tue Dec 16 18:24:36 EST 2008
From the Johnson Service Bulletin:
In some cases, very active crystals continue to oscillate under key up
conditions. Increasing the bias on V3 stops even the most active crystals.
Change R7 from 1 megohm to 500K 1/2 watt and R11 from 33K to 100K 1/2 watt.
I'm not sure why they would specify a non-standard value like 500K, but I'm
sure a 470K would work fine.
73,
Darrell, WA5VGO
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