[AMRadio] High-power tuners

[John Lawson]

On Thu, 7 Dec 2006, A.R.S. -  W5AMI wrote:

> John,
>
> a very large rf coil with rotating link off epay several years ago,
> along with a split stator air variable of about 250pf per section and
> probably 7+kv rating.  Very simple to build if you can find or make



   Is this 'rotating link' like a goniometer, ie. the axis of the link 
rotates equatorially in the plane of the coil's axis, and inside of it? 
Or does it 'slice' in and out of the middle of the coil, ala B+W coils?



   And does "very large" = 6" outside dimension silver-plated cold-rolled 
oxygen-free virgin-billet copper bar wound 10 or 15 turns 5' in diameter 
spaced a foot apart on a threee-ton glass form....  or is it, perhaps, a 
bit more.... conservative....?


   Enquiring minds....


Cheers  and Best of the Season


John
KB6SCO
DM09fg

PS: No, seriously - what are the parameters/specs of the coil?