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Old 21st Feb 2009, 9:31 am   #15
John M0GLN
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Join Date: Jan 2004
Location: Southport, Merseyside, UK.
Posts: 1,156
Default Re: Measuring Resonant Frequency

Quote:
Originally Posted by OErjan_S View Post
I usually use a version of Oldtimer74's approach, it works great even at tank Q above 1500.
2-4 turn coils for both output from gen and input to scope.
this is also good way of measuring Q without loading tank much.
I presume you need to wind a pair of coils to suit the diameter of every coil under test,
if so, its not a big job and they could be kept for future tests.

John
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