[AMRadio] Valiant doorknob cap

John Lawson jpl15 at panix.com
Tue Jul 12 18:48:09 EDT 2005

On Tue, 12 Jul 2005, Bob Maser wrote:

> I would not change it because doorknobs aren't susceptible to age.

   Shows 420 pF on an LCD cap meter - Sprague Tel-Ohmike (at 600V) shows 
220 pF. Cross-testing other (similar) caps shows a very small variation in 

   Someday when I'm rich I'll buy an ESR meter that goes down into the pFs 
and that'll tell for sure - but the Tel-Ohmike is consistently within 4 or 
5% of it's readings when using known-quantity devices, so I think the 
doorknob needs a little Graphite....



John  KB6SCO

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