HP 82168A Acoustic Coupler, HP41 books

[Noelene]

Thanks for adding me to this forum. My husband passed away recently, and I am sorting through his large collection of HP calculator equipment in order to sell it off.
First, are there many on this forum in Australia, where I am (near Canberra, ACT)?
Secondly, I came across an 82168A Acoustic Coupler - it seems an unusual article, would it be valuable?    
Thirdly, I am sorting out the calculators with their manuals and accessories so I know what I have, but there are several separate books on the HP41 (HP-41 Extended Functions Made Easy, HP-41 M Code for Beginners, HP41 Synthetic Programming Made Easy). Would it be better to offer these for sale here where members might be interested in these, than on eBay?

[jracca]

Sorry for your loss.

You'll probably get more money on ebay, but I don't know for sure.

It is rare, but essentially obsolete, most people don't even have phones that will fit it anymore. It will of interest to collectors and enthusiasts.

[vassilisprevelakis]

Hi,

Even if its not useful as a communications device, it is still interesting historically.

Moreover, it can charge classic batteries (e.g. HP-67 or HP-75) in the compartment between the receptacles for the handset.

**vp

[Sylvain Cote]

Hello Noelene,

(01-21-2017 11:21 PM)Noelene Wrote:  Thanks for adding me to this forum. My husband passed away recently, and I am sorting through his large collection of HP calculator equipment in order to sell it off.

Sorry for your loss.

(01-21-2017 11:21 PM)Noelene Wrote:  Secondly, I came across an 82168A Acoustic Coupler - it seems an unusual article, would it be valuable?

It is a communication device to be used with a telephone on the landline telephone system (POTS).
It was used to either transmit files or to remotely access a text terminal.

The following picture show a test setup that I had build two years ago.
HP-71B <-> HP-82168A Acoustic Coupler <-> a touch tone telephone <-> a phone line simulator <-> a touch tone telephone <-> HP-82168A Acoustic Coupler <-> HP-75C

Best regards,

Sylvain