Larry, I understand most modern doorknobs (e.g. HEC's) at or below 170pF
are NPO. I think 3 170pF's in parallel may work if you truly need NPO.
Matching network or blocking capacitor?
Tim N3QE
On Wed, Jan 8, 2020 at 11:35 PM Larry via Topband <topband@contesting.com>
wrote:
> does anyone know of a HV (20KV) capacitor with a value of approximately
> 500 pf that has a NPO value?
> thanks in advance.
> larry/n7dd
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