[Amps] placement of RF choke bypass cap.

[Bill, W6WRT]

ORIGINAL MESSAGE:

On Sat, 20 Mar 2010 21:47:14 +0100, "pc5m, Carel" <pc5m at xs4all.nl>
wrote:

>
>What I could do is drill a hole in my disc, slip a (isolated) wire through
>it. If the resonance is than back to the value it was without the disk,
>would that be the ultimate proof ?

REPLY:

No, because the capacitance, whatever it is, would no longer be
connected to the wire. 

Try this: Measure the spacing from the bottom edge of the disk to the
ground plane, then re-solder the disk at the edge of the disk,
maintaining the same spacing. Now the disk is acting as just a
capacitor, without having the wire's RF flowing through it.

73, Bill W6WRT