>From the manual...
Power Requirements:
230VAC, 2 or 3 wire, 30A, Single Phase
Input Power:
3kW PEP SSB, 1kW AM, 2kW CW/FSK
Drive power required:
80-150W
Output Power:
2kW PEP minimum
...
Power supply has been modified with Dahl parts and will hold its HV pretty
well. Easily 3800V+ under load.
I usually drive it with 80-90W for illegal limit, er I mean "legal" limit, no
ALC -- radio will do 150W.
:-)
Joe
----- Original Message ----
From: Gudguyham@aol.com
To: n3ji@yahoo.com; cherokeehillfarm@earthlink.net; w8ji@w8ji.com
Cc: amps@contesting.com
Sent: Monday, July 17, 2006 5:55:15 PM
Subject: Re: [Amps] transformers
In a message dated 7/17/2006 10:50:19 A.M. Eastern Standard Time,
n3ji@yahoo.com writes:
I can get nearly 2.5kW PEP output measured on the VFD (predecessor to the
WX0B PowerMaster) out of my Henry 3K-A with a pair of 3-500ZGs and almost 4kV
on the anodes with 150W+ drive. Do I do that? No, but it's possible with
enough "umph"...
Sorry I asked about the "2kW..." marking on the '220...
The Henry 3KA is rated at 3000watts PEP input. It runs pretty high plate
voltage (more than any other amp I have seen) on 3-500's. It has one great
big
transformer!! I don't doubt it could make at least 2KW out with 150 watts
drive. We've made it routine to swap out the 3-500's for 3CX1200A7 tubes in
that amp and easily makes about 3500 watts output.
Don't be sorry you asked the question.....later Lou
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