I searched far and wide for high voltage air variables a year or so ago
for a tuner. I needed some quite specific values rated up to about 1
kV. The only place I could find them was Surplus Sales of Nebraska.
They weren't cheap.
73,
Scott K9MA
On 6/16/2018 20:30, rich hurd WC3T wrote:
I bought a Cardwell 500PF 3.5KV on eBay last year. As a bonus I discovered
that it had a reduction drive when I opened the box. :)
Not sure if it fits your requirements - it's pretty ratty looking, and was
obviously pulled from some electronic equipment. I sort of resigned
myself to needing to 'spiff it up'.
Keep your eyes open on eBay, that's the best advice I can offer.
On Sat, Jun 16, 2018 at 8:05 PM Dauer, Edward <[email protected]> wrote:
With the tutelage of a friend I am putting together a mag loop but have
had no luck finding a source of air variable capacitors up to the task.
Vacuum variables aren’t hard to find, but the $200 and up price tag is
offputting. I have seen a couple of AVCs on E-bay that looked pretty
ratty; and the commercial types for sale new look like low-power trimmers.
Anyone know of a source -- or even have any they’d sell? Specifically I
would like a range of 6 to 120 pf or more, butterfly or split stator, with
plate spacing sufficient to take a kilovolt of RF. And ideally with
reduction gear tuning though that’s optional.
Thanks for any info anyone can provide . . .
Ted, KN1CBR
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