[Boatanchors] Morrow Modulation Question

Carl km1h at jeremy.mv.com
Wed Mar 18 18:39:05 EDT 2009


Low power mod xfmrs show on Ebay fairly often, it is then a matter of 
matching size and impedances.

If you want, the original can be rewound by a forum member.
http://members.tripod.com/tubes_tubes_tubes/transformerrewindingservice/

Carl
KM1H


----- Original Message ----- 
From: "Jeff Anderson" <jca1955 at sbcglobal.net>
To: "Boatanchors" <boatanchors at mailman.qth.net>
Sent: Wednesday, March 18, 2009 5:18 PM
Subject: Re: [Boatanchors] Morrow Modulation Question


> Many thanks for everyone's help and advice regarding my Morrow problem
> of "light" AM modulation.  I believe that I've finally found the root
> cause -- a shorted winding in the modulation transformer!  [I haven't
> taken the transformer apart yet to verify, but this hypothesis best
> explains the most recent measurements I've made on the transformer
> performance itself.]
>
> Oh well -- what to do now?
>
> Anyone have any advice on rewinding a transformer?  (Anyone have 
> another
> Morrow xmtr, working or not, they'd like to part with?)
>
> And again -- thanks to all for your advice.  It was a huge help!
>
> - Jeff, k6jca
>
> http://k6jca.blogspot.com/
>
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