HP vintage boards being sold as scrap

[Jay Jaeger]

On 9/27/2019 4:34 AM, Paul Birkel via cctalk wrote:
> -----Original Message-----
> From: cctalk [mailto:cctalk-bounces at classiccmp.org] On Behalf Of Jay Jaeger via cctalk
> Sent: Thursday, September 26, 2019 6:40 PM
> To: cctalk at classiccmp.org
> Subject: Re: HP vintage boards being sold as scrap
> 
> ...
>> There is a stack of IO interface boards, including HSTs, for the HP 2100/1000 series there.
>>
>> Lower-right stack in this pic, 7 boards, boards have one red and one grey handle:
>> 	https://i.ebayimg.com/images/g/n08AAOSwjY5dg5Kd/s-l1600.jpg
>>
>> "HS Terminal" is discernible on one of them, and the one on top looks to be an HS Terminal as well.
>> Can't be certain about the others but they have the same size IO connector, they may all be HSTs.
>>
>> HSTs are the basic RS232 & current loop, async serial-line interface boards, 12531D, used for the console and such in the 2100/1000 series,
>> going back to the early machines of the series.
>>
>> (HS is 'High-Speed', but that's relative to the late-60s, billed for up to 2400bps, but it is possible to operate them at higher speeds).
>>
>> I'd buy one for, say 60$, if someone picks up the bunch and wants to flog one.
>>  
>>
> 
> I would be in that same camp, assuming one of these would also work in a
> 2112B ("M Series") machine.
> 
> JRJ
> 
> -----
> 
> They are readily available, individually, on eBay.  See "HP12531".
> There are currently two listed at reasonable prices, plus reasonable shipping.
> 
> For reference, this:  http://www.hpmuseum.net/document.php?catfile=236
> 
> You probably want the HP 12531D.  Both of the current eBay listings are the "D".
> 
> I believe that the HP 12531C is what is visible on http://www.hpmuseum.net/display_item.php?hw=111 
> 
> paul
> 
> 

Thanks for the tip.  (Part of not recognizing that is that I had never
made the connection between the 2108B/2112B and the "1000" series
before, until I read about it in this thread, and did some poking
around.  The HP's have not been one of my priorities in over a couple of
decades, and most of of that focus was on my older HP2114B.)

JRJ