On Sun, 1 Jan 2012 12:57:50 EST, Steve Bonine wrote:

So where in the US are these manufactured?

Varian still sells them - their plant was in Utah the last time I
looked. These are "jugs" the size of wastebaskets with prices to
match. There are two tube rebuilders in California who serve the
broadcast transmitters world-wide as well. I also suspect that
klystrons, TWTs, and magnetrons are in that mix, but 6SN7-s are not.
--

73 de K2ASP - Phil Kane

From a Clearing in the Silicon Forest
Beaverton (Washington County) Oregon

e-mail: k2asp [at] arrl [dot] net

In article ,
Phil Kane wrote:

Varian still sells them - their plant was in Utah the last time I
looked. These are "jugs" the size of wastebaskets with prices to
match. There are two tube rebuilders in California who serve the
broadcast transmitters world-wide as well. I also suspect that
klystrons, TWTs, and magnetrons are in that mix, but 6SN7-s are not.

Everything I tend now is solid state except for four transmitters that
use one each of Eimac 8990 for output. Econco (in Woodland, last I
check) still rebuilds those.

I haven't used anything smaller than 8990 for some years. I know they're
thousands of dollars new, but I haven't bought a new one in ages.

--
John Higdon
+1 408 ANdrews 6-4400

On Mon, 2 Jan 2012 00:24:30 EST, John Higdon wrote:

Varian still sells them - their plant was in Utah the last time I
looked. These are "jugs" the size of wastebaskets with prices to
match. There are two tube rebuilders in California who serve the
broadcast transmitters world-wide as well. I also suspect that
klystrons, TWTs, and magnetrons are in that mix, but 6SN7-s are not.

Everything I tend now is solid state except for four transmitters that
use one each of Eimac 8990 for output. Econco (in Woodland, last I
check) still rebuilds those.

The two rebuilders to whom I was referring were of course Econco and
Svetlana. Econco, Eimac, and Varian's former vacuum tube business are
now all part of Communication & Power Industries of Palo Alto.
---
Phil Kane
Beaverton, OR