Resonance & Crystal meter

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Topic: Resonance & Crystal meter (Read 8374 times)

9H1FQ

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Posts: 161

Resonance & Crystal meter

« 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: 2409

RE: Resonance & Crystal meter

« 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

Member

Posts: 137

RE: Resonance & Crystal meter

« 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

Member

Posts: 2409

RE: Resonance & Crystal meter

« 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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