Hi,
One of the fellow QRSS'ers in Hamilton while building the 80m TX, noticed a small problem. To achieve frequency he had to remove the inductor in series with the crystal, not unusual. He replaced that with a small? fixed capacitor (4p7) to get the crystal tuned on frequency.
He noticed a start up?problem, which is probably due to the small values of capacitor in series with the crystal. I suggested that he put a 10nF or 100nF across the collector resistor of the oscillator. This worked well. I suspect the negative feedback of the unbypassed?collector resistor was causing marginal operation
Kevin
ZL1UJG
