[GreenKeys] Interesting Punch on eBay

[Eric Moore]

I built a low speed interface for it, and then a gent at MIT built a high
speed interface for it.

https://youtu.be/-aZl8rMT8Aw

I am happy to share details. It is impossible to tell which punch block is
installed from those pics I think. It has all 9 resistors for the solenoids.

-Eric

On Fri, Mar 24, 2023, 12:12 PM W2HX <w2hx at w2hx.com> wrote:

> Can it be told from the listing if it is 5 or 8 level (or in between)?
> Also, I’ve read it can operate at different speeds. Does this require a
> change in gears or is it just done electrically (like sending the data more
> slowly)?  My understanding is this is a parallel device. Anyone ever design
> an interface for it?
>
>
>
> *From:* greenkeys-bounces at mailman.qth.net <
> greenkeys-bounces at mailman.qth.net> *On Behalf Of *Jeff G
> *Sent:* Friday, March 24, 2023 12:36 PM
> *To:* Daniel Jones <djones at k6yic.com>
> *Cc:* Greenkeys <greenkeys at mailman.qth.net>
> *Subject:* Re: [GreenKeys] Interesting Punch on eBay
>
>
>
> Aww I have one of these and just realized I'm missing the cool little
> cover.
>
>
>
> Jeff
>
>
>
> On Fri, Mar 24, 2023 at 11:39 AM Daniel Jones <djones at k6yic.com> wrote:
>
>
>
> Vintage Teletype Machine 8043 Paper Punch
> <https://www.ebay.com/itm/275758370418?mkcid=16&mkevt=1&mkrid=711-127632-2357-0&ssspo=kYsS3zINThm&sssrc=2349624&ssuid=AycLQQAWQ4m&var=&widget_ver=artemis&media=COPY>
>
> ebay.com
> <https://www.ebay.com/itm/275758370418?mkcid=16&mkevt=1&mkrid=711-127632-2357-0&ssspo=kYsS3zINThm&sssrc=2349624&ssuid=AycLQQAWQ4m&var=&widget_ver=artemis&media=COPY>
>
>
>
> www.K6YIC.com
>
> DJones at K6YIC.com
>
> HH#11973
>
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