Author Topic: External DTMF pad Star Dynamic TA-955/PT (or even TA 977/PT)  (Read 71 times)

Offline dsk

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External DTMF pad Star Dynamic TA-955/PT (or even TA 977/PT)
« on: November 03, 2017, 11:24:35 AM »
After struggling for almost a year finding a seller willing to ship me one I finally got my touch pad. $ can live with $35
Putting in a 6V battery. (did not have time to buy the right one so I ripped out 4 cells from a 9V battery.
In the other end it comes out 2 wires, for the TA-955/PT it ends up on 2 terminals on a connector fitting the handset jack on a TA-312-PT and will be just connected across the transmitter in CB  position. If you choose the TA-977/PT it is 2 wire terminals who will be put in parallel with the entire operators telephone in the SB-22/PT field exchange. So far I just have connected it to 40 ohms loudspeaker,(60dB on at 1 meter) and it sounds pretty loud, and when I but the carbon transmitter on my AE 40 on the speaker the exchange understand every tone.

dsk
« Last Edit: November 03, 2017, 04:43:21 PM by dsk »
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I have even got a regular New York number :-) 646 570 1796

Offline dsk

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Re: External DTMF pad Star Dynamic TA-955/PT (or even TA 977/PT)
« Reply #1 on: November 03, 2017, 11:32:12 AM »
If anybody has some manuals or info about these, I would be happy.

dsk
Please notify me of dead links in my postings.

C*NET +1 999-3011


I have even got a regular New York number :-) 646 570 1796