Author Topic: GTE 120B: Here I go again  (Read 897 times)

Offline mentalstampede

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Re: GTE 120B: Here I go again
« Reply #15 on: May 09, 2017, 09:51:30 PM »
It looks like a smart board because it is, as I said at the start.

Neato. I never knew GTE produced a smart chassis for the 120. Does it need a battery to power the relay or does it require a separate DC power supply?
My name is Kenn, and I like telephones.

“Progress isn't made by early risers. It's made by lazy men trying to find easier ways to do something.” --Robert Heinlein

Offline DoubleTone

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Re: GTE 120B: Here I go again
« Reply #16 on: May 10, 2017, 12:12:23 AM »
It requires a separate 7.5 volt AC power supply. I rigged one up when I was experimenting. I could get the phone to work, but it was programmed for someplace in western New York state near Buffalo.

Offline mentalstampede

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Re: GTE 120B: Here I go again
« Reply #17 on: May 19, 2017, 03:17:00 PM »
That looks more like it. Unfortunately, I plugged it in and it appears my touch-tone unit isn't working. So one step forward, one step back.

It does, however, get dial tone, ring, and receive calls.
My name is Kenn, and I like telephones.

“Progress isn't made by early risers. It's made by lazy men trying to find easier ways to do something.” --Robert Heinlein

Offline dsk

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Re: GTE 120B: Here I go again
« Reply #18 on: May 19, 2017, 04:30:04 PM »
Have you tested if the dial is polarity sensitive? Mine are.  http://www.classicrotaryphones.com/forum/index.php?topic=11846.msg127364#msg127364

dsk
« Last Edit: May 19, 2017, 04:32:49 PM by dsk »
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Offline Payphone installer

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Re: GTE 120B: Here I go again
« Reply #19 on: May 19, 2017, 04:53:39 PM »
All the payphone collecting I have done I have  avoided the GTE payphones because I always thought they were ugly and boring,however despite that, they seem to seek me out. I know the the GTE case will take a Protel 2000,310 and 7000 board. I know that you can adapt the half button dial by simply changing the bezel or face from a smart set dial. I know that as in W/E sets there were prepay and post pay sets. I do believe that the post pay dumb set will work on any standard telephone line but not 100% sure of that. The upper-housing lock on the GTE sets were BJ004 locks. I have those locks and keys. I have somewhere some old GTE sets when it stops raining I will go hunt them down and get some pics on here.  I also know of a place that may still have the old dumb chassis.  I also have a very old rotary GTE in beige with the porcelain front.  I will post some pic of all of this.

Offline mentalstampede

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Re: GTE 120B: Here I go again
« Reply #20 on: May 19, 2017, 07:16:36 PM »
Have you tested if the dial is polarity sensitive? Mine are.  http://www.classicrotaryphones.com/forum/index.php?topic=11846.msg127364#msg127364

dsk

That's the problem! I can't believe I didn't think to check that. Thanks!

Jim, I got the dumb chassis from Triad in Ohio. That's the only place I could find one. I have an attraction to these phones because I grew up in GTE territory and made many calls on an AE single slot in my youth.
My name is Kenn, and I like telephones.

“Progress isn't made by early risers. It's made by lazy men trying to find easier ways to do something.” --Robert Heinlein

Offline mentalstampede

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Re: GTE 120B: Here I go again
« Reply #21 on: May 21, 2017, 09:31:59 AM »
Onward and upward! Does anyone know what the functions of the "Strapping Array" blocks are on the 120B chassis? They're obviously jumpers to change the behavior of the phone, but what exactly do they do?

Edit: nevermind, I found this documentation uploaded by dsk a few years back. Thanks!

Also, the transmitter on this phone seems to be rather quiet when hooked up to my 616 system.
« Last Edit: May 21, 2017, 09:53:40 AM by mentalstampede »
My name is Kenn, and I like telephones.

“Progress isn't made by early risers. It's made by lazy men trying to find easier ways to do something.” --Robert Heinlein