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Re: A more stable Bitx40 (fun with ceramic resonators)

 

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I have found that most three leg ceramic resonators are resistant to frequency pulling due to the two internal caps, some will pull further than others. YMMV.

Joel Caulkins
KB6QVI

On Dec 27, 2016, at 6:19 PM, geocrasher@... [BITX20] <BITX20@...> wrote:

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Looks like Mouser has a 4.8mhz Ceramic Resonator, which would put it at 7200khz.?


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?and also a 4.75mhz xtal to put it at 7225khz:



Not a lot of wiggle room with a crystal but you could get between 7222 and 7225 with a trim cap.The frequency would at least be "rock solid" if you'll pardon the pun.
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