[Amps] RF Parts OEM 3-500ZG's

[Joe Isabella]

Remember, the 3K-A was designed as a commercial/government use amp.  It has no standby switch, and is built pretty stout (weighs nearly 200lbs.).  I'm about to take mine down to give it a good cleaning, add 160m to it, and add some relays so I can remotely control the fils, blower, and put it in standby when not needed.  I've seen RFP 3-500ZGs do nearly 2500W out in another Henry amp that was modified -- I'm sure it was pretty dirty at those levels, but hey, who cares during a contest, right?? 
 
And like I said before, if you think 3-500s aren't good for 1kW PEP, tell Ameritron...  
 
:-D
 
Joe, N3JI


k7rdx <k7rdx at earthlink.net> wrote:
Some of the older Henry 3k amps had current limiting in the psu negative and
required 100+ watts drive for just 1200 or so output (Easily disabled).2K
output(Very possible) from a Henry equipped with 3-500z tubes seems a bit
excessive to me,especially if your`e concerned about keeping neighbors and
fellow hams happy..Jim.
----- Original Message ----- 
From: 
To: ; 
Sent: Monday, August 08, 2005 7:58 PM
Subject: Re: [Amps] RF Parts OEM 3-500ZG's


>
> In a message dated 8/8/2005 11:56:52 A.M. Eastern Standard Time,
> n3ji at yahoo.com writes:
>
> Maybe you should try it with **TWO** 3-500ZGs, like my Henry runs. It
will
> provide nearly 4kV at 1A with Peter Dahl upgrades.
>
> Joe, N3JI
>
>
>
>
> I wont comment on the first sentence, but the 4KV would probably have to
be
> under load. Most amps except for your Henry WONT give 4KV under load.
Any
> other amp except one like yours will not produce that kind of power from
3-500s
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