[GreenKeys] Another 28KSR. Looking for info on its LESU

[Jack]

Western Union "electrical cabinet". Internal loop and bias supply with polar relay.  
Jack K2TTY

Sent from my iPhone

> On Apr 22, 2017, at 11:29 PM, Pete Lancashire <pete at petelancashire.com> wrote:
> 
> https://goo.gl/photos/XD8AqbuWSFeYeFJK6
> 
> Was not very accessible, will dig it out next weekend.
> 
> Anyone have info on the LESU ?
> 
> -pete
> 
> 
> 
> 
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