Mike Stein mhs.stein at gmail.com
Sun Nov 29 00:37:05 CST 2015

HAL Communications are still around AFAIK and the ham world is usually pretty good about documentation etc.; might be worth sending them an inquiry:

Maybe even try to get in touch with Bill Henry:

----- Original Message ----- 
From: "Brad" <unclefalter at yahoo.ca>
To: "'General Discussion: On-Topic and Off-Topic Posts'" <cctalk at classiccmp.org>
Sent: Saturday, November 28, 2015 10:39 PM
Subject: RE: HAL DS-3100 ASR

I'm not sure about that.. I've been trying to find any documentation I can online about it to understand more about how it works.  I got it for $40 in non-working condition -- turned out it does work.  But detailed info seems to be sparse.

-----Original Message-----
From: cctalk [mailto:cctalk-bounces at classiccmp.org] On Behalf Of william degnan
Sent: Saturday, November 28, 2015 6:40 PM
To: General Discussion: On-Topic and Off-Topic Posts <cctalk at classiccmp.org>
Subject: Re: HAL DS-3100 ASR

On Nov 28, 2015 9:34 PM, "Brad" <unclefalter at yahoo.ca> wrote:
> Just posting here in case anyone not on other forums I'm on sees this 
> and knows something about these.
> I picked up a HAL DS-3100 ASR terminal.  My understanding is these are
> devices intended for teletype/radio use.  It is ASCII compatible and 
> in
> I can select ASCII and baud rates from a menu.  It has a 25 pin male
> port on the back.  I can't find it now but somewhere I read it 
> complied
> an RS-232 standard.  I tried hooking it up to my PC with a null modem
> but couldn't get either to produce anything on their screens.
> Anyway, just a shot in the dark in case any of you remember these things.
> I'm not really into HAM stuff, but it's a cool little terminal and I 
> was hoping it could be used/adapted to other tasks.
> Brad
You have rules out that it is not a current loop terminal?

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