[GreenKeys] Model 28 stock ticker progress

[Peter Gottlieb]

Both the top and bottom rows had both letters and figures, oddly enough.

On 5/20/2025 8:58 PM, W2HX wrote:
> >But when I stepped through all
> characters the first half were on the bottom of the tape and the second
> half were on the top.  But not the same, they have different characters
> printing.  So there must be a shift code.
>
> As you probably know, the ticker tape print format had alpha characters on the 
> top row (stock symbol) and numbers and fractions on the bottom row (stock 
> price). Decimilization of stock prices happened around 2000-2001 IIRC.
> MSFT
> 13 5/8
>
> But I have no further insight into the issues 🙂
>
>
> 73 Eugene W2HX
> My Youtube Channel: https://www.youtube.com/@w2hx/videos
>
> --------------------------------------------------------------------------------
> *From:* greenkeys-bounces at mailman.qth.net <greenkeys-bounces at mailman.qth.net> 
> on behalf of Peter Gottlieb <hpnpilot at gmail.com>
> *Sent:* Tuesday, May 20, 2025 8:05 PM
> *To:* Greenkeys <greenkeys at mailman.qth.net>
> *Subject:* [GreenKeys] Model 28 stock ticker progress
> Update:
>
> I have made some progress on several fronts with this machine.
>
> Many thanks to John W9DDD I now have type boxes.  They are set up for
> weather symbols which is interesting.  The character ordering is
> completely different than the standard.
>
> After running and oiling the machine seems to be working.
>
> I made repairs to the plastic front where it attaches to the frame and
> those areas were cracked and missing.
>
> I programmed an Arduino to send characters to the 28.  For now I just
> step through all 64 possible characters.  The speed of the unit is
> indeed 135 Baud and taking a video of the code bars shows them stepping
> through the binary possibilities.  So that is working and what I want to
> send gets to the code bars.  That's a good first step.
>
> But the character encoding is very, very odd.  I'm not sure if I should
> rearrange the type box or not.
>
> And I am confused about the printing in two rows.  The 573-140-100
> manual I have doesn't cover that.  But when I stepped through all
> characters the first half were on the bottom of the tape and the second
> half were on the top.  But not the same, they have different characters
> printing.  So there must be a shift code.
>
> Once I understand this I can make a map and control what I print from a
> look up table but for now it's very confusing.
>
> I tried going to Staples for a typewriter ribbon but all I could find is
> a little calculator ribbon but it was 1/2" and I could modify the spools
> so it's at least printing until I can find a proper ribbon.
>
> I also need to locate some 1" paper tape.  For the moment I am cutting
> 1" strips from regular paper.
>
> Peter
>
>
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