[ARC5] "Retaining" plugs

[Mike Hanz]

On 7/4/2013 9:24 AM, Mike Everette wrote:
> I've seen a number of the PL-68/PJ-068 connectors with threads protruding beyond the plastic shell, on a couple of different types of microphones.  Off the top of my head I don't remember any PL-55/PJ-055 crossing my path that have the threads exposed but there may well have been.  At a hamfest a couple of years ago I bought a bunch of "new" headset extension cords like the CD-307, I'll look them over more closely.

Apples and oranges, Mike.  Jay was talking about the threads protruding 
on the chassis mount jacks, not the cord plug plastic shell.  The cord 
plugs with the plastic shell he is talking about have a knurled ring 
that threads onto the chassis mounted jack, similar to an AN connector.  
I found one with one of his part numbers and posted a photo of one at 
http://aafradio.org/flightdeck/Retained_phone_plug.JPG

The B prefix appears to be a common NAF practice that identifies the 
particular Naval Air Facility who was cognizant authority.  The C prefix 
in the RL-7 manual was probably NAF Columbus.

The RL-7 diagram I sent to Jay that shows their usage is the third from 
the bottom frame at http://aafradio.org/docs/RL-7.html

Happy forth of July, everyone,
  - Mike  KC4TOS