[Boatanchors] Tuning Capacitor Air Gap Information

[J Forster]

A great deal of caution is necessary when scoping HV RF circuits. You really
need one of the Tek special HV probes (P6015, filled with Freon) and even they
have to be derated at higher frequencies as I remember.

Best,
-John



jeremy-ca wrote:

> A scope works wonders for measuring peaks.
>
> You ever wonder why ham SSB amps often have bad habits of arcing the Tune
> caps? Cheap manufacturers use spacings that equal or just a hair above the
> HVDC and have no overhead for peaks. Thats just for SSB, imagine what
> happens with plate modulated AM.
>
> I get customer amps in here on a regular basis that I have to either change
> the caps or rebuild the type that use removable plates.
>
> Carl
> KM1H
>
> -