Perhaps the 5 MHz rock is a third overtone cut. My experience, I've
never been successful in getting a third overtone cut to oscillate on
the fundamental frequency.
73
Bob, K4TAX
On 2/11/2016 9:38 AM, zabarnick . wrote:
I recently built the small test oscillator circuit shown in the K1 manual.
Using a 5 MHz crystal, my circuit built on a breadboard oscillates on the
third overtone at 15 MHz, rather than the fundamental. Any suggestions as
to why and how to modify the circuit to oscillate on the crystal's
fundamental frequency?
Steve N9SZ
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