[GreenKeys] TTY loop jack boxes - eBay

[Ralph Mowery]

I had a plastic box with 6 jacks in it.  The first one was an open circuit and the others had the shorting switch.  By unplugging the open circuit first it removed the voltage from the other jacks.   That let me plug in just one thing, or many things in the loop.  Just make sure you do not touch the  nut holding the jacks in the box.  

 

Ralph ku4pt

 

 

From: greenkeys-bounces at mailman.qth.net [mailto:greenkeys-bounces at mailman.qth.net] On Behalf Of Nick England
Sent: Monday, August 09, 2021 4:12 PM
To: Greenkeys
Subject: Re: [GreenKeys] TTY loop jack boxes - eBay

 

1) A cord connected only to equipment (printer, TD, reperf, etc.) has no voltage on it.

2) A cord connected only to a loop has voltage and also opens the loop.

Therefore -

Just learn to always unplug the cord from the loop jack first, then from the equipment. It's like learning to turn the autostart printer off before trying to change the ribbon......

 

If you have little kids, that's different - put the patch panel or loop power switch 6 ft up on the wall or something. 

 

IMHO FWIW,

Nick England K4NYW
www.navy-radio.com

 

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