Thanks to all who responded per the 3CX1000A7. I will be looking into
putting this tube on that air!
Joe W4AAB
W0UN -- John Brosnahan writes:
At 07:12 AM 1/16/2005, Roger D Johnson wrote:
W0UN -- John Brosnahan wrote:
Biggest problem is that it is a filament HOG. 5 volts at 30 amps.
But it's virtually instant warmup! No waiting an agonizing
three minutes!
73, Roger
On the other hand it has a more expensive/rare socket than an 8877.
But the tubes are typically cheaper on the surplus market when you can
find
them. Used by a number of companies for RF heating. Finding sockets
may be a bit more problematic although a 4CX1000 socket could probably
be made to work.
If I still had some I would put them on the air. But I have 8877s
instead. Long warmup but the watt-hour meter does not spin
quite as fast when I am just tuning the bands. While you COULD
turn the 3CX1000A7 OFF and ON a lot, this is generally not regarded as
good design practice.
As I said, it is an OK tube, and if the price is right it will make a good
HF/low VHF amp. For instant on I like the 3CX1200A7 at HF and
the 3CX1200Z7 on 6M.
73--John W0UN
_______________________________________________
Amps mailing list
Amps@contesting.com
http://lists.contesting.com/mailman/listinfo/amps
_______________________________________________
Amps mailing list
Amps@contesting.com
http://lists.contesting.com/mailman/listinfo/amps
|