[GreenKeys] LOOP SUPPLIES WITH CIRCUIT BOARDS

[73131.3073 at compuserve.com]

 Attached are two documents I have regarding these items.

Tim Swarthout, WA5QEG

 



-----Original Message-----
From: Robert Laag <rlaag at pacbell.net>
To: Greenkeys <greenkeys at mailman.qth.net>
Sent: Thu, Nov 18, 2010 9:04 pm
Subject: [GreenKeys] LOOP SUPPLIES WITH CIRCUIT BOARDS

 
 
 
I HAVE JUST DUG OUT OF MY JUNKBOX 4 DIFFERENTLY NUMBERED M-28 LOOK ALIKE LOOP  
SUPPLIES THAT HAVE CIRCUIT BOARDS UNDERNEATH WITH TRANSISTORS AN OTHER PARTS...?  
WONDERING WHAT THESE MIGHT HAVE BEEN FROM OR USED WITH...? THEY HAVE SMALL  
TRANSFORMERS LIKE THE LOW CURRENT VERSION OF THE M28 LOOP SUPPLIES...? WHAT IS  
DIFFERENT ABOUT THEM I DON'T KNOW BUT THEY HAVE DIFFERENT PART NUMBERS...? BOB 
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