Author Topic: Jacks, Plugs Wall Outlets ...timeline  (Read 1468 times)

Offline oldguy

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Re: Jacks, Plugs Wall Outlets ...timeline
« Reply #15 on: March 18, 2018, 08:22:13 PM »
I'm 69 & as a kid & an adult, all our phone in California (Cupertino area) our phones were hard wired until modular phones came out.
Gary

Offline Haf

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Re: Jacks, Plugs Wall Outlets ...timeline
« Reply #16 on: May 06, 2018, 03:11:15 AM »
USA

389 A jack and 273 A plug

Here is an example of an 1930's 389 A and 273 A  three contacts jack and plug, metal housing with indentations on the plug. Imagine the modern gray cord to be a cloth covered three conductor cord going to a 534 A sidetone subset .
I just missed another of those plugs due to the stupid ebay restrictions for outside US bidders, even with an US shipping address.
The original picture taken from the 1934 BLR mentioned earlier here. Thank your for contributing to the TCI Library, Chuck Hensley.

Haf
« Last Edit: May 06, 2018, 03:19:34 AM by Haf »
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Offline Pourme

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Re: Jacks, Plugs Wall Outlets ...timeline
« Reply #17 on: May 06, 2018, 08:36:31 AM »
Interesting, resembles the 1/4" jack we uses to have on headphones in the US.
Benny

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