[GreenKeys] WECO patch cord / plug specifications

[John Hensley]

Broadcast - MaBell men:

I'm trying to learn more about these WECO patch plug/jack variations; these are ring/tip/sleeve type, I think. 

75 ohm - 358A
124 ohm - 372A
135 ohm - 241A
600 ohm - 310 (dual plug version is 338A)

How are the cord dimensions figured/determined; what are the jack & plug dimensions and what were they used for.  I was always told that 600 ohm was telephone line.  I assume this is what teletype patching uses.  

Does anyone have any Western Electric engineering data with drawings & math which might explain them?

I tried going through ADC but cannot penetrate their army of sales staffers.

TIA,

John W5JV


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