[Milsurplus] Jones Plugs

[WA5CAB at cs.com]

Only the smaller Jones plugs are polarized by rotated contacts.  The 
largest series have all parallel contacts and a round guide pin.  These are used 
in for example the BC-610 (inter-rack cables) and BC-603/683 (dynamotor 
plugs).  Some of the early FM sets also used the largest Jones plugs and I would 
guess that so did GR.

In a message dated 6/27/2010 12:28:42 PM Central Daylight Time, 
k2cby at optonline.net writes: 
> The answer may depend on how you define "Jones Plug."
> 
> General Radio used a connector very similar to a jumbo-sized Jones plug in
> connecting the external power supplies to its signal generators in the 
> late
> 1930s.
> 
> The main difference was that it had a round locator pin in addition to the
> familiar two rows of rectangular contacts. 
> 
> Miles Anderson, K2CBY
> 16 Round Pond Ln
> Sag Harbor, NY 11963
> 

Robert & Susan Downs - Houston
wa5cab dot com (Web Store)
MVPA 9480