[GreenKeys] jackfields

[WA5CAB at cs.com]

OK.  Last night after I went to bed I recalled where I used to hear the term. 
 It was in conjunction with radio station audio patching.  This morning I 
managed to locate the TT-23/SG manual.  Like the SB-1203/UG it has in each 
circuit or loop two looping jacks, a set jack and a misc. jack (not actually in the 
loop).  And a toggle switch to put the local loop supply in or out of the 
circuit.  So in the sense of your description, there are two top jacks.  Sorta.

In a message dated 2/17/2009 10:32:29 AM Central Standard Time, 
larryradio at worldnet.att.net writes: 
> Normally "normalling" is crossconnected from the top jack to the bottom 
> jack.  Plug into the top and you get the source...plug into the bottom and 
> you get the equipment the top was sending to.
> 
> Sometimes, the bottom was just a 600 ohm termination for an unused source 
> such as multiple outputs from a DA.
> 

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