[WRL] Globe King tank coils

Mon, 23 Feb 2004 19:28:50 -0700

My GK 500B has a phenolic tank coil form which looks like it got overheated
a few times but is not distorted.  I have often thought that a ceramic form
would be a better idea.
It would be helpful if you would measure the form and see how close it comes
to the diameter of the usual phenolic coil form.
TNX and 73
Damon, W7MD
Tucson, AZ

----- Original Message ----- 
From: "Tommye & Jim Wilhite" <[email protected]>
To: "AM Radio Discussion List" <[email protected]>; "WRL Mailing list"
<[email protected]>
Sent: Monday, February 23, 2004 10:28 AM
Subject: [WRL] Globe King tank coils

> A couple of weeks ago I saw an ad for a part of the tank coil for a Globe
> King 500.  The thing that caught my eye was that it was wound on a ceramic
> form.
>
> I have a GK 500A and have had a C model, but neither had a ceramic form.
> This peaked my interest and I bought it from the guy who had placed the ad
> on a bulletin board.  It arrived today and is for a GK 500 and I am
> wondering if anyone else has ever seen a GK 500 tank coil on a ceramic
form?
>
> This is wound with the same wire and has the taps for 15, 20 and 40 meters
> like the one in my 500A.  I am wondering when Leo switched from the fiber
> form to ceramic and if the 80 and 160 meter portions were on ceramic as
> well?  Wonder how many 500s were built with ceramic forms?
>
> 73  Jim
> de W5JO
>
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