[GreenKeys] CV-483

[WA5CAB at cs.com]

Lar,

CV-483/URA-17 is part of AN/URA-17.  Complete set comprises two CV-483, a 
cabinet to hold both, cables and a manual, NAVSHIPS 94028.

I have one original of the manual but have not scanned it for reprint.  If 
you can't turn one up, I can put it into the que to do.  FYI, it was later 
renumbered NAVSHIPS 0967-034-9010 and then NAVSHIPS 0967-LP-034-9010.  It's hard to 
be certain from the clue in one of the temporary changes but it may have been 
completely reprinted under the latter number in 1971.

But to answer your question, like most of the Navy shipboard converters, it 
keyed an external loop.  No loop supply in the converter.  The loop current was 
also set by an external resistor (usually in a patch box or panel).  No 
current adjustment means in the converter, just a switch.

In a message dated 11/21/2007 2:50:09 PM Central Standard Time, 
larryradio at worldnet.att.net writes: 
> nformation Pleeze,
> 
> I have a CV-483 from eBay.  Good scope presentation and lites are all 
> working (one neon).
> 
> The output is my mystery.  Is it supposed to key 130 VDC to the magnets or 
> does it supply the keyed 130 VDC?
> 
> I put RTTY from W1AW into the input and got the scope responding.  The 
> output connection shows no resistance and no voltage.  Is it possible that 
> the 130 VDC, if supplied from an outside source, needs to be there to be 
> keyed?
> 
> Any manuals out there available?  Advice is muchly appreciated.
> 
> Lar
> 

Robert & Susan Downs - Houston
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