Greetings,
Even at 6 meters the 4-1000A will easily run legal output at 4KV.
es 73 de Pete WA5JCI
6 Mtr VUCC#361/745--2 Mtr VUCC#346/190
6 Mtr WAS#490--6 Mtr DXCC/112 Confirmed
Charter Life Member CSVHFS #28
6 Mtr WAC-CW
"What the hell kind of country is this when I can't hate anybody but a white
man."
Hank Hill
----- Original Message -----
From: "Phil (VA3UX)" <phil@vaxxine.com>
To: <amps@contesting.com>
Sent: Thursday, January 03, 2002 8:51 AM
Subject: RE: [AMPS] Building new 4-1000A amp
>
> At 07:27 AM 1/3/2002 -0500, you wrote:
>
> >Why does everyone insist that the 4-1000 needs in excess of 5kV to run
legal
> >limit? I have built several that easily put out 1500W with only 4-4.5 kV
> >and 100W from a solid state rig. Am I just using good tubes vs. ones
near
> >the end of life? Probably.
>
> I've wondered this myself Mike. I've had the same experience as you.
>
> Phil
>
>
> >I would use bandpass coax stubs to keep harmonics down with only an "L"
> >network.
> >
> >Mike, W1NR
> >
> >
> >-----Original Message-----
> >From: owner-amps@contesting.com [mailto:owner-amps@contesting.com]On
> >Behalf Of Peter Chadwick
> >Sent: Thursday, January 03, 2002 3:59 AM
> >To: amps@contesting.com; 'wlfuqu00@uky.edu'
> >Subject: RE: [AMPS] Building new 4-1000A amp
> >
> >
> >
> >I used an L network in a marine tx many years ago: the antenna load for
test
> >purposes in the 1.6 - 3.8MHz band was 10 ohms in series with 250pF, so an
L
> >network gave adequate harmonic rejection. The working Q came out at 15 in
> >that
> >case, so the losses were manageable. We sold several hundred of them, so
I
> >guess
> >they can't have been too bad.
> >
> >I gather from what's been said here in the past that you need 5 or 6kV
on
> >the
> >plate, but I guess you knew that already.
> >
> >73
> >
> >Peter G3RZP
> >
> >
> >--
> >FAQ on WWW: http://www.contesting.com/FAQ/amps
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> >Problems: owner-amps@contesting.com
> >
> >
> >
> >
> >
> >--
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>
>
>
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