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Acoustic Coupler For Sale or Trade

smp

smp

Veteran Member
Joined
Oct 4, 2011
Messages
1,727
Location
Bedford, NH, USA
Hello all,

As I was rummaging around in my boxes of stuff in the cellar the other day, I came across this Anderson Jacobsen Model A 242A Acoustic coupler.

I seem to remember someone here on the Forums indicating that they were interested in acquiring acoustic couplers...

Anyway, I have this one. It was working perfectly fine when stored away many, many years ago, perhaps back in the early 1980s. It's dusty, and it has stickers and markings on it, but the rubber for the telephone handset is still remarkably pliable.

I'd love to get an HP-82929A Programmable ROM Module for my HP-86B computer...

Thanks for listening,
smp

View attachment 9580View attachment 9581View attachment 9582View attachment 9583View attachment 9584
 
Let's call it what it is--a modem. Connection is via the DB25F to a serial port on your PC. Since a modem is DCE and the PC is DTE, it should work just fine with a "straight through" cable.

The downside is that it's probably 300 bps. I don't know of many BBS that still support that speed.
 
Hi Chuck,

You know, there's just no pleasing everyone. ;)

I agree, BTW, this is indeed a modem. However, had I called it that, someone else would have looked at the pictures and asked, "Why are you calling this thing a modem? Its labels say it's an Acoustic Coupler." I am trying to entice the members who actually know what this thing is, and what it is used for to take a look.

And, yes, this model is 300bps only. [ Let's not get into the bps vs. baud discussion! :rolleyes: ]

smp
 
smp said:
Hi Chuck,

You know, there's just no pleasing everyone. ;)

I agree, BTW, this is indeed a modem. However, had I called it that, someone else would have looked at the pictures and asked, "Why are you calling this thing a modem? Its labels say it's an Acoustic Coupler." I am trying to entice the members who actually know what this thing is, and what it is used for to take a look.

And, yes, this model is 300bps only. [ Let's not get into the bps vs. baud discussion! :rolleyes: ]

smp
Click to expand...
I think what Chuck is trying to point out is that "acoustic coupler" can refer to a modem with cups or just the cups themselves. For example my R-S M100 has a built-in modem and a connector for either a phone line or an "Acoustic Coupler, part# 26-3805" (from the manual), which is just the two cups:

http://sliderule.mraiow.com/wiki/Tandy_Radio_Shack_TRS-80_Model_100/Acoustic_Coupler

180px-Tandy_Radio_Shack_TRS-80_Model_100_Acoustic_Coupler_in_use.jpg
 
Thanks for the elaboration, Mike. I forget sometimes that not everyone remembers the bad old days when only Ma Bell could make a direct connection to the phone line (cf. "Carterfone").
 
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