I agree. I had a friend on another ship back in the early 90's that
modified a Drake L4B to run a pair of 8877s. It was really more of a
complete rebuild because he did it right, new tank circuit, new tuned
input circuit, bigger t/r relay, re-did the PS, you name it he did it.
He was a EE that was bored with his job in Columbus so he joined the
Navy as a WSC-3 tech. Anyways, he ran high power RTTY back then so that
was his rationale for doing the L4B re-do. I had some film color
pictures of the final product. When we return to port next week I will
dig them up and see if I can scan them in. The thing was a monster and
ran COOL at legal limit RTTY. Okay, maybe not totally cool but pretty
darn close. I guess in theory this was close to a 5kw amp. I do not
remember what it would do key down into a dummy load but he used a
monster Dahl xmfr that was rated at something like 2800 vac at 2amps ccs
and it weighed close to 90 pounds, just the xmfr itself would give you a
hernia.
Lane
Ku7i
-----Original Message-----
From: amps-bounces@contesting.com [mailto:amps-bounces@contesting.com]
On Behalf Of Dr. David Kirkby
Sent: Sunday, March 28, 2010 6:29 PM
To: Herzog
Cc: Ham-amps
Subject: Re: [Amps] me not an idiot
Herzog wrote:
> RE: Tell me guys.
> Who's idiot enough to build a 5 kilowatt amplifier and use it at the
1,5 kW
> level?
> Are we kidding ourselves or not?
> Alex 4Z5KS
> ==================
> People wouldn't want to admit public ally to running what used to be
> called a "California Kilowatt"; that would be proving the idiot part.
> K2LB
A 5 kW tube run at 1.5 kW could be made more linear than something run
closer to
it's maximum. As the tube ages, the drop of emmision would be less of an
issue
than with a tube run closer to it's maximum. As someone else said, if
you have
the parts, that would be another reason for using using a 5 kW
amplifier.
dave
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