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Author Topic: Resonance & Crystal meter  (Read 6047 times)
9H1FQ
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Posts: 144




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« on: November 16, 2012, 08:42:44 AM »

Hi Guys,
I am looking for a good working circuit or kit  Resonance Meter to measure an LC frequency
Also, a crystal checker with a range of some 100khz  up to 30Mhz and possibly beyond.

Paul
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KA4POL
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Posts: 2125




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« Reply #1 on: November 16, 2012, 10:31:36 AM »

I recommend this: http://www.qrpproject.de/UK/dipit.htm
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KL0S
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Posts: 132




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« Reply #2 on: November 17, 2012, 03:42:31 PM »

You could build Doug DeMaw's (W1FB) "A Tester for Crystal F, Q and R" in the January 1990 issue of QST. Circuit board available from FAR Circuits as I recall. Works great.

73 - Dino KL0S
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KA4POL
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Posts: 2125




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« Reply #3 on: November 17, 2012, 09:51:29 PM »

You would need a signal generator and a frequency counter to make the circuit fully operational though.
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