[Boatanchors] Patterson Power Supply Help Needed

[cemilton at aol.com]

Joe,

RatShack used to carry the 70.7v trannies.  If you are near an "older" RS, it might pay to stop in and see if one is there.  Your plan to sub a resistor for the field coil is an acceptable method also.  I used to have info on that when I was restoring antique rigs..........but most is long gone.  Maybe there's a reference in ER???  Just thinking.

Gud luck

73  Chuck  W4MIL



  
チャーリー ミルトン 
 


Subject: Re: [Boatanchors] Patterson Power Supply Help Needed


I would suggest you look around for an inexpensive, maybe free, 5 watt PA
systems 70.7 volt audio transformer.  

 
would be vastly superior to a simple resistor.
Ray, W4BYG


I just picked up a nice Patterson PR-10 receiver but there is no speaker.
Originally, it had an electrodynamic speaker and a field coil. The schematic
is here: 

http://www.nostalgiaair.org/PagesByModel/091/M0013091.pdf

I want to substitute a PM speaker because I don't have much choice. Thank you for your help.

Joe Connor
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