Jim,
If anyone believes that they don't need a good earth ground on their
equipment, I'd be glad to set them straight.
Darrell, WA5VGO
At 06:07 PM 1/12/2005 -0600, you wrote:
Darrell,
That amp you built with the 4-1000 was a "killer" in more ways than one!
Time for a confession..
Regards,
Jim
WD5JKO
-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] Behalf Of Darrell, WA5VGO
Sent: Tuesday, January 11, 2005 6:04 PM
To: Discussion of AM Radio
Subject: Re: [AMRadio] AM Amps
At 04:21 PM 1/11/2005 -0500, you wrote:
>In a message dated 1/11/05 12:14:43 PM, [EMAIL PROTECTED] writes:
>
>
> > well all I can say is it works.. works well as a matter of fact, and has
> > been for 6 years :)
> > I typically run between 350 and 400 watts of carrier every day. It looks
> > great on the scope. Modulation envelope is perfect. 100% modulation. In
6
> > years Ive only lost one tube, and I accidently broke that one.
> >
> >
>
>I have to agree with Gary. You're seeing 1600 watts PEP and 400W of
carrier
>OUT with a pair of GG 813s??? Does not compute! Just curious, are you
>talking about 400W INPUT power to the linear under carrier only condx
>maybe? If
>so, this would work out to about 133W carrier OUT and each 813 dissipating
>about 133W which would make more sense.
>
>Dennis D. W7QHO
>Glendale, CA
I'm with Dennis and Gary. To run a linear amplifier at 375 watts of carrier
and 100% modulation, you will need around 800 watts of plate dissipation.
For a short time a number of years ago, I tried running an AF-68 and a
4-1000A linear amplifier. I could never get more than around 450 watts of
carrier and stay linear............I didn't need a heater in the shack
either.
73,
Darrell, WA5VGO
73,
Darrell, WA5VGO
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