[JMS] 90800 Coils

myann88 at comcast.net myann88 at comcast.net
Fri Jul 27 12:10:03 EDT 2007


Hi Jim,

I just have to say that your homebrew solution for making 90800 coils is really a neat way of doing it.  My compliments!  

After overcoming a few health problems, I am working once more on my Millen 812A Amp project.  The HV power supply and modulator (pair of 811As) have been built and tested. I am going to drive the big Millen amp with a Ranger.  I built an exact setup like that a few years ago Jim when I lived in PA. The Ranger audio is  fed directly into the 811 grids. Just make sure that you add a 3000 ohm resister across the grids of the 811s in the modulator though.  Really works!  My best to the Millen gang!

Vy 73, Mike, W2NVR

-------------- Original message -------------- 
From: "JAMES HANLON" <knjhanlon at msn.com> 

> Ken, 
> 
> I'm going to repeat this because my reply to the Reflector just bounced. 
> 
> You can always make your own coils for the 90800. I use a piece of Plexiglass 
> for the jack bar and old banana plugs for pins. I strip the spring off the 
> outside of the banana plug shank, and the resulting plug is the same size as the 
> ones on the Millen coils. For the coil itself you can use some B&W Miniductor, 
> or wind something yourself on a pill-bottle form, or you can borrow a coil from 
> something else like a B&W Junior or Bud coil. 
> 
> 73, 
> 
> Jim Hanlon, W8KGI 
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