Re: 14.070.0 not pulling to 14.074.0 for the 20 meter DSB
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Both crystals say 14.070
K2jhu
What frequency is the crystal cut for? KD1JV ? ? OK I understand what you are saying. The problem I am having is for the 20 meter D4D kit from crkits. There are 2 caps, one from pin 7 of the NE602 to ground and one going between pins 6 and 7 and one side of the crystal with the other side of the crystal being grounded. The signal I have is strong but not on 14.074.00 ? Capacitive loading lowers the crystal frequency, which are typically the two caps on the SA602/612 pins 6 and 7.? But if you have a 14.070 crystal but really want to be on 14.074, you need to put a capacitor in series with the ?crystal to rise it¡¯s frequency. This is best done with a trimmer cap, a 30pfd trimmer cap would likely do the trick. ? Steve KD1JV ? Hi all. Hoping someone can advise me what causes the pulling of the 14.070.0 crystal to 14.074.0 In step 3 of the manual it states by adding a wire to the antenna termanual of your transceiver?and placing the DSB board near the wire you can zero beat to confirm the frequency. The zero beat approach works fine except my unit in on 14.070.0 the crystal frequency, not the pulled 14.074.0. I don't know what actually pulls the frequency so if anyone can help me with this I truly would appreciate?it. Thanks for your time.
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