[Johnson] Re: Johnson Digest, Vol 52, Issue 8

[John Lyles]

Chuck
I had the same problem, except I picked up a 500 RF unit without even the PS chassis. The iron was probably made by SNC in Oshkosh, but it was a weakness in those transmitters. I do have access to some power transformers, which are in ballpark for HV, ~ 1500-2000 VDC. Also, the modulation iron, you might look at something like a UTC VM5 or CVM5 if you can find one used but still good. Send me the dimensions that the HV transformer has to fit into, including the mounting feed spacings and hole spacings. I will check on the plate transformer. 
73
John 
K5PRO


> Date: Sun, 11 May 2008 09:22:35 -0400
> From: "Chuck Hurley" <scorebrd at verizon.net>
> Subject: [Johnson] 500 Transformers
> To: <johnson at mailman.qth.net>
> Message-ID: <005001c8b36a$13c80500$6601a8c0 at Chuck>
> Content-Type: text/plain;	charset="iso-8859-1"
> 
> I picked up a Johnson 500.  The power supply is missing the modulation transformer and the H.V. transformer is incorrect.  Harbach has replacements but they are too tall.  Does anyone have either of these transformers around?  I have no problem with a bad core as I can get it rewound.
> 
> Chuck  K1TLI