Re: Cricket 40 Crystal Source

Bobby Drummond

Also, once you've used your Cricket for a while consider using a ceramic resonator (or better yet, two in parallel) along with a 22 uh inductor and variable capacitor in place of the crystal.  That would be a VXO that would allow you to use the Cricket in just about any part of the CW portion of the 40 meter band if you were to select a ceramic resonator in the neighborhood of around 7.2 MHz or so.

Yes, it would require some relatively extensive modifications to the Cricket but it's doable and would allow you much more flexibility with the Cricket.  With a little creativity and effort, you will be greatly rewarded.   (Kit designers of 4State QRP kits- please consider making some future simple transmitters using VXOs and ceramic resonators. I think there would be enough interest that it would be worth the effort)

For info about VXOs with ceramic resonators, just use a search engine and put in "VXO using ceramic resonator" and you should find plenty of information.

73 de AK4JA

On Sun, Feb 7, 2021 at 11:11 AM John - KK4ITX via <> wrote:
In addition to the others mentioned:

73 de AK4JA

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