Alas, on the wretched hour of Thu, 04 Jan 2007 15:19:59 -0800 jgboyles
thusly proclaimed:

Ten Tec in USA offers a variable capacitor kit, max C is 500pf @ ~5kv.
Cost is about $80 USD. Takes about a hour to assemble. I use them in
a 1.5kw ATU and they work fine. Kit #1207.

If you get all the parts, cut them up, and assemble the whole thing,
homebrew, makes the $80 price tag seem reasonable. I could see you
spending more than half on just materials.

Good Luck,
Gary N4AST

Those are not all that awful prices for the rest of their kits... The BFO
circuit looks especially tempting. I'll be sure to check it again when I
decide I'm going to build an actual radio. Thanks for the link!

--
Nos