[GreenKeys] Emailing: MVC-002F, MAVICA, MVC-001F, MVC-001F.411

[WA5CAB at cs.com]

The jack bodies (S) are insulated from the front panel.  So mounting the box 
to a bulkhead and inserting a plug (dummy or otherwise) will not short the 
circuit to ground.  The original TT-23B/SG manual shows usage of Signal Corps 
CC-66 patch cords and JJ-055B plugs.  Who knows why.  Maybe they were 
overstocked.  :-)

In a message dated 2/17/2009 1:20:20 PM Central Standard Time, 
larryradio at worldnet.att.net writes: 
> Nick et. al.,
> 
> There is a serious MILITARY CONFLICT starting here....the Navy shows on 
> fig.2-1 of the T-23 patch field TRS on the looping jacks.  Thence, on the 
> fig. 2-2 it shows a dummy plug that only has a T &S in a TRS jack.
> 
> http://antiquetelephone.com/diagram.pdf
> 
> I've posted a link to the offending figs.  They do not show the internal 
> connections of the dummy plug.  So, apparently, the dummy sleeve is taking 
> the the ring contact to the shell of the jack which would be ground if the 
> box is mounted on the ship's wall...err bulkhead.
> 
> 

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