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Bazz4CQJ · 17th Jul 2019, 11:37 pm

A search of the net reveals one or two projects where people have used a 455kHz ceramic resonator (usually encountered in the form of a 3-pin filter), in place of a quartz crystal or tuned circuit, as the basis for a stable BFO. The rationale is that it offers better stability than may be easily obtained from a tuned circuit but is more easily pulled than might be the case with a crystal.

There's also been some use of ceramic resonators in VFO's.

I wonder if anyone has been down this route or can see any pitfalls?

B

17th Jul 2019, 11:37 pm	#1
Bazz4CQJ Dekatron Join Date: Apr 2009 Location: Oxfordshire, UK. Posts: 4,934	Use of a Ceramic Resonator in a BFO A search of the net reveals one or two projects where people have used a 455kHz ceramic resonator (usually encountered in the form of a 3-pin filter), in place of a quartz crystal or tuned circuit, as the basis for a stable BFO. The rationale is that it offers better stability than may be easily obtained from a tuned circuit but is more easily pulled than might be the case with a crystal. There's also been some use of ceramic resonators in VFO's. I wonder if anyone has been down this route or can see any pitfalls? B __________________ Saturn V had 6 million pounds of fuel. It would take thirty thousand strong men to lift it an inch. Last edited by Bazz4CQJ; 17th Jul 2019 at 11:42 pm.