About a narrow filter at 10.7 MHz
"Michael Black" wrote in message
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=?iso-8859-1?B?Rm9y52FDZWx0YQ==?= ) writes:
Hello,
It depends on what you need. Don't forget that the first single signal
selectivity came to receivers in the thirties, via a single crystal
filter.
I'm suddenly blank about the name, but it was a balanced transformer
feeding a crystal on one side and a trimmer capacitor on the other. You'd
trim out the crystal holder's capacitance with the trimmer.
Lamb? WAG.
Pete
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