[TowerTalk] [Fwd: Re: Lubricating air variable capacitors]

[Steve]

The LC-102 has test lead short and test lead open calibrations, which I did.

The Cardwell web site does not specify the test method they use to 
measure capacitance, so I'm in the dark from two perspectives: I don't 
know what frequency the LC-102 uses, nor do I know the frequency 
Cardwell uses :-\

Steve K8JQ

Jim Lux wrote:
> At 04:32 PM 10/3/2005, Steve wrote:
> 
> 
>>I had access to a Sencore LC-102 capacitor-inductor analyzer today and
>>used it to measure the capacitance and leakage of the Johnson 153-6-1.
>>
>>Admittedly, the tech whose shop I borrowed did not know when the LC-102
>>was last calibrated, nor did I have a "standard" capacitor to use as a
>>benchmark. The Johnson 153-6-1 measured 58pf min and 538pf max
>>capacitance. The Cardwell web site lists this model of Johnson capacitor
>>as 36pf min and 496pf max capacitance values. Wonder why the values I
>>measured are so notably higher than the spec? Non-metallic work bench
>>and I self-calibrated the LC-102 prior to making the measurements.
> 
> 
> 
> Did you allow for the lead capacitance?
> What was the frequency of measurement vs what's the frequency specified in 
> the datasheet? (is there some parasitic L or C that's throwing off the 
> measurement)
> 
> 
> 
> _______________________________________________
> 
> See: http://www.mscomputer.com  for "Self Supporting Towers", "Wireless Weather Stations", and lot's more.  Call Toll Free, 1-800-333-9041 with any questions and ask for Sherman, W2FLA.
> 
> _______________________________________________
> TowerTalk mailing list
> TowerTalk at contesting.com
> http://lists.contesting.com/mailman/listinfo/towertalk
>