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VK2ZRG > TECH 27.12.05 23:36l 43 Lines 1188 Bytes #999 (0) @ WW
BID : 1920_VK2ZRG
Read: GUEST DL1LCA OE7FMI
Subj: Re: Coils
Path: DB0FHN<DB0RGB<OK0PPL<DB0RES<DK0WUE<7M3TJZ<HS1LMV<I0TVL<VK2TGB<VK2IO<
VK2WI
Sent: 051227/2216Z @:VK2WI.#SYD.NSW.AUS.OC #:2280 [SYDNEY] FBB7 $:1920_VK2ZRG
From: VK2ZRG@VK2WI.#SYD.NSW.AUS.OC
To : TECH@WW
VK2ZRG/TPK 1.83d Msg #:1920 Date:27-12-05 Time:22:09Z
G3ZJO Wrote :-
>
>The smaller the core the less the effect. When building and getting coils
>spot on I often 'throw' a ferrite bead into a, say 20mm dia coil.
>
>I have made myself a homebrew version of the tuning wand which service
>engineers used to use.
>
>So useful for alignment and finding instabilty. Just wave the wand.
>
>..........................................
>Construction
>
>Take a 100mm of plastic rod of suitable diameter to push inside a ferrite
>bead, give it a dab of superglue to secure.
>
>At the other end find a brass sleeve of suitable diameter and scure that.
>
>...........................................
>
>30 years ago these cost a weeks wages.
>
Hello Eddie,
I made a tuning wand as you describe back in the 1950s.
(Less the super glue of course!) A very useful device, that's for sure.
I thought that anyone with a little technical knowledge of radio would
know about these things.
73s from Ralph VK2ZRG@VK2WI.#SYD.NSW.AUS.OC
/ack
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