[GreenKeys] 60ma loop supply

[wa2hwj@att.net]

Greg,
The "larger" loop supply found in the back of a Model 
28 can put out 300 ma. (the "smaller" one is good for 
150 ma.). If you want one of the 300 ma. units, let me 
know. Keep in mind that you can put a lot of TTY's in a 
series 60 ma. loop before causing any problems (losses 
or distortion). But, if you want to set up isolated 
loops, you need the current.
Jack WA2HWJ
> Does anyone have a good schematic for a 60 ma loop supply capable of
> supplying up to 6 loops? I use the old '72 ARRL Manual one for a single
> loop, but it current limits thru a dropping resistor. Since I am now
> acquiring a proper patch panel, I should have a supply that will carry
> multiple teletypes, both for test and operational purposes.
> 73 es tnx de Greg WA3IVX
> 
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