[GreenKeys] Mystery rectifier

[Leanne]

Looks like a homebrew of a rec 30(?). I replaced mine with a Multilok 6006 
telegraph loop supply. I found in a salvage yard
and have never seen another. (5"w x 4"d x 3.25"h) It was manufactured  for 
Naval Communications Systems by Robertshaw Aeronautical and Instrument
Division. Part nr 900-000-007 in case someone wants to go on a treasure 
hunt.

Leanne  W1WXS

-----Original Message----- 
From: groupsrichart at gmail.com
Sent: Thursday, November 15, 2018 1:55 PM
To: W9DDD ; greenkeys at mailman.qth.net
Subject: Re: [GreenKeys] Mystery rectifier

Looks like a homebrew loop power supply. The electrolytic caps are
probably toast and those selenium rectifiers are really nasty when they
fail. The only things worth salvaging are the power transformer and the
wirewound resistor with the sliding tap that was used to set the loop
current.

Tim WS4V

On 11/15/2018 1:45 PM, W9DDD wrote:
> Anyone recognize this?  Kind of WU flavor?
>
> https://www.tapr.org/images/mystery-ps-sm.jpg
>
> Probably goes to land fill unless someone has a need.  Was bolted in the 
> bottom of 28KSR cabinet but wasn't "active".  No other indications of WU 
> on this RO.
>
> One of the other KSRs has a WU ESU, any pointers for a WD on it? Haven't 
> dug into this one far enough to look for name plates.
>
>

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