>In a message dated 5/2/00 9:00:59 AM Eastern Daylight Time, 2@vc.net writes:
>>
>> >
>> >One not too expensive device is the Almost All Digital Electronics L-C
>> >meter. It's cheap, pretty accurate, and comes as a kit that took me under
>> an
>> >hour to build. It is worth changing the 5 volt regulator to a low drop out
>> >type, though, as you get a lot more effective battery life.
>> >
>> >Of course, it doesn't measure at the operating frequency,
>>
>> The apparent resonant frequency of two L networks in series is not the
>> operating frequency.
>>
>> cheers, Peter
>>
>> - Rich..., 805.386.3734, www.vcnet.com/measures.
>> end
>>
>--------------------------------------------------------------------------
>----
>-
>Rich,
>
>Could you give an approximation to guesstimate the difference in the
>apparent
>measured frequency and the operating frequency?
As I recall, on 80m the difference is typically hundreds of kilohertz,
with the resonance of the tank being lower than the operating frequency
where the tank was adjusted.
> Or what factors determine
>the difference ?
>
The biggest factor is Q. The higher the Q, the less the difference.
later, Dave
- Rich..., 805.386.3734, www.vcnet.com/measures.
end
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