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G3ZJO > RF 24.12.05 16:01l 32 Lines 993 Bytes #999 (0) @ WW
BID : 130104G3ZJO
Read: GUEST OE7FMI
Subj: Re: RF down a plastic spindle?
Path: DB0FHN<DB0FOR<DB0SIF<DB0ROF<DB0ERF<DB0ABZ<DB0BRB<DB0TGM<DB0BLO<DB0TEM<
SR1BSZ<CE8FGC<HR1FBB<F6KMO<F5GI<DK0WUE<DB0RES<ON0AR<GB7CIP<GB7COV<
GB7BEN
Sent: 051224/1108Z @:GB7BEN.#43.GBR.EU #:33987 [Bletchley] $:130104G3ZJO
From: G3ZJO@GB7BEN.#43.GBR.EU
To : RF@WW
G0FTD wrote:-
> Or a decoupling capacitor at each end of the spindle ;-))
I went into humour mode on my previous reply Andy and thought you would
have lots of other sugestions.
I wonder is the plastic spindle black. If so it may be carbon loaded and
not a true insulator. Are you up for some tests?
Try a glue gun stick as a spindle should be able to file or carve down
each end to the right dia. just to try.
G0TSU goes into transformer theory. Hmm, we do not have a primary 'turn'
and if the grub screw is in a brass collar, like they usually are, that is
a shorted turn.
However the brass disc is the plate of a capacitor, another test.
Try a metal disc on a hot melt stub spindle just plugged into the hole and
see if you can get an RF burn off that.
Do keep us informed of any findings.
73 - Eddie, G3ZJO @ GB7BEN
Does know which end of a Soldering Iron to hold
Message timed: 11:04 on 2005-Dec-24
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