[GreenKeys] 8 bit punch/reader?

[Pete Lancashire]

Teletype made a series of high speed punches, the best known is the BPRE.
They were not current loop.

Bulletin 215B (manual)
https://ia601008.us.archive.org/15/items/bitsavers_teletypebry71_5159220/215B_BRPE_TechMan_May71.pdf

They presented to the user 9 > 3 ohm coils and a pulse from a magnetic
pickup.

If your serious about burning up 1" tape, keep your eyes open for a Facit
or Remex. From time to time you can get one from a machine shop that
has/had NC machine tools.

Unless your going to read the tape more then something like > 100 times
there isn't much reason to use Mylar or the Mylar/Aluminum/Mylar tape.
NEVER NEVER punch Mylar based tape in a model 33.

If you end up with a Remex reader, your pretty much limited to using black
paper tape. They illuminated the photocells (phototransistors?) with a
miniature sun simulator.. ok actually a lamp that was pretty much as
bright.

As to finding 1" tape. I've pretty much given up. When my remaining supply
gets to a couple rolls I'll get back to making the splitter I started about
5 years ago.

-pete




On Thu, Aug 21, 2014 at 6:58 AM, Simon Claessen <info at drukknop.nl> wrote:

> teletype made a separate reader/puncher for the 43 machine. but i dont
> think they were currentloop.
>
>
> On 21-08-14 00:22, W2HX wrote:
>
>> Hi folks. I am thinking about acquiring an IMSAI 8080 or some similar
>> aged vintage computer to relive some misspent youth.  I know nothing
>> about 8 bit teletypes.  I have a 28 ASR and KSR and I have room for
>> nothing else. Can someone tell me if teletype made an 8-bit reader/punch
>> machine with no keyboard or printer? And if so, are they rarer than hens
>> teeth?
>>
>> Also, how rare is 1” tape? I am also considering researching some of the
>> CNC punches/readers that can be found on wncsupply.com as some of these
>> can use mylar tape – more durable and maybe more plentiful.  Of course,
>> I have no idea whether these other kinds of punches/readers can be made
>> usable with these old computers.
>>
>> I guess this question is half vintage computer related and half teletype
>> specific.
>>
>> Thanks
>>
>> 73 Eugene W2HX
>>
>>
>>
>> ______________________________________________________________
>> GreenKeys mailing list
>> Home: http://mailman.qth.net/mailman/listinfo/greenkeys
>> Help: http://mailman.qth.net/mmfaq.htm
>> Post: mailto:GreenKeys at mailman.qth.net
>>
>> 2002-to-present greenkeys archive: http://mailman.qth.net/
>> pipermail/greenkeys/
>> 1998-to-2001 greenkeys archive: http://mailman.qth.net/
>> archive/greenkeys/greenkeys.html
>> Randy Guttery's 2001-to-2009 GreenKeys Search Tool:
>> http://comcents.com/tty/greenkeyssearch.html
>>
>> This list hosted by: http://www.qsl.net
>> Please help support this email list: http://www.qsl.net/donate.html
>>
>>
> --
> Met vriendelijke Groet,
>
> Simon Claessen
> drukknop.nl
>
> ______________________________________________________________
> GreenKeys mailing list
> Home: http://mailman.qth.net/mailman/listinfo/greenkeys
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:GreenKeys at mailman.qth.net
>
> 2002-to-present greenkeys archive: http://mailman.qth.net/
> pipermail/greenkeys/
> 1998-to-2001 greenkeys archive: http://mailman.qth.net/
> archive/greenkeys/greenkeys.html
> Randy Guttery's 2001-to-2009 GreenKeys Search Tool:
> http://comcents.com/tty/greenkeyssearch.html
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mailman.qth.net/pipermail/greenkeys/attachments/20140821/c92b8ebb/attachment-0001.html>