[ARC5] RU Receiver Hook-Up: Preliminary

[David Stinson]

Someone (Hue, I think) asked about powering-up
the RU receivers.  Just did a preliminary circuit trace.
I haven't tried this yet.  
Will report on how it works when I get to it. 
 Notes: 
B+ supply must have "floating" B-.
Jumper pin 89 to pin 76 - turns on audio PA.
Pin 78 goes to B-, NOT ground.
The AVC bias dividers can be smaller Wattage
if you use less B+.
25K for the gain pot will work fine.
I recommend lower than the speced 250 volts B+.
I'd bet coffee and donuts it will work fine at 100 or so.
Audio out at 79 does not use the low-pass audio filter.
If you want that, take audio from pin 75.
Diagram:

http://home.netcom.com/~arc5/RUpwrtrc.jpg

Anyone tries this and finds a problem, please post.  
Thanks.

73 Dave AB5S