[Lowfer] Interesting finding

[Ed Phillips]

John Andrews wrote:
> 
> Bill, et al:
> 
> Just a caution on air variables. The weak link is the bearings, which can
> have substantial resistance. I have measured over an ohm resistance in some
> of them. Use of a silver-impregnated conductive grease can help, but they
> have to be evaluated on a case by case basis.
> 
> John A.

	Is it my imagination or did Bill say he was using a "butterfly"
capacitor with no sliding contacts?  (May have gotten that from another
conversation..)  Anyhow, the use of a flexible pigtail connection to 
the rotating plates should eliminate effects of contact resistance and
the added inductance should be of no concern at lowfer frequencies.

Ed