[JMS] Fw: PS for Millen 90881 HF Amplifier
THOMAS SMITH
n5ama at att.net
Thu Apr 16 17:26:59 EDT 2026
My Millen 90281 supply is only good for 750v at about 235ma so won’t do you much good. Depending on what finals you run, you will probably need to build. I’ve seen a ton of HV supplies at the fests for way less money than it would take to assemble one from scratch (depending on how healthy your junk box is). Especially good prices toward the end of the day and how much the supply weighs. LOL
Tis the season for looking under the table and in the back of the pickup trucks. :<}
Tom N5AMA
Sent from my iPhone
> On Apr 16, 2026, at 3:27 PM, georgew1lsb--- via James_Millen_Society <james_millen_society at mailman.qth.net> wrote:
>
>
> Hi Paul:If you can find one, a potential solution is to acquire the power supply/modulator deck from a Clegg Zeus transmitter. The PS would only put out about 1,000V with silicon rectifiers, so it would limit your input to around 200W, but it includes an audio section ending up with a pair of 811A's for modulation. I had one here, but it was too doggone heavy for me to deal with so I sold it locally.
>
> Meanwhile, I found a power transformer from a Heathkit SB-200, which is almost ideal if you build a full wave doubler around it. The filament and bias windings are also totally useable for the Millen amp.
>
> Good luck & 73,George - W1LSB
>
>
>
> On Thursday, April 16, 2026 at 02:15:13 PM EDT, Paul Christensen via James_Millen_Society <james_millen_society at mailman.qth.net> wrote:
>
> I'm looking for a power supply to operate a Millen 90881 HF power amp. Apart from building my own supply from the ground up, suggestions appreciated.
>
> Paul, W9AC
>
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