[GreenKeys] Patch Panel details

[Roy Morgan]

  Greenkeyers,

I'm now off of "nomail", for a while at least.

I am planning to make a patch panel for my TTY station, and have a couple 
jack bars for the purpose:

1) Two rows of 1/4 inch PL-055 type jacks that have a normally closed circuit.

2) Two rows of 1/4 inch T-R-S type jacks that have normally closed circuits 
for both contacts.

I assume that the tip-only plus shell ones were used for normal loop 
circuits since by M-15 has such plugs on it that look original.

What was the use of the TRS-type jacks, audio/telephone circuits?

Or do I have it backwards.

Roy
- Roy Morgan, K1LKY since 1959 - Keep 'em Glowing!
7130 Panorama Drive, Derwood MD 20855
Home: 301-330-8828 Work: Voice: 301-975-3254,  Fax: 301-948-6213
roy.morgan at nist.gov --