[GreenKeys] WTB: Model 15 Auto CR+LF

[Gary L. Buda]

Since I run mechanical machines I too am bummed out by the computer users
who do not send hard cr and lf.  I am going through my junk box of model 28
parts looking for the palls so I can turn my machine into an auto cr and lf
machine.  I never bothered before because I used this machine extensively
for RTTY pictures where you want the overstrike capability. 

Users of MMTTY can set their software up so it sends a hard cr and lf at
the right place without having to hit the enter key. It requires counting
out 72 characters and then adjusting the window size to that line length.
There is a way in the setup options to save this window size.  I know, I
have done it to my copy of MMTTY which I cannot use due to rf getting into
my laptop. 

Users of the MIXW2 software are out of luck.  I exchanged email with them
and they did not include a feature in the software to send hard cr and lf
at the 73rd and 74th characters.

Gary WA0NDN
NNNN
CR CR LF LTRS

At 09:14 PM 2/21/03 -0600, jhaynes@alumni.uark.edu wrote:
>Of course the better way, in the light of modern technology, is to use a
>microprocessor that receives the text and inserts a CR-LF-LTRS between
>words.  Wonder if you could do that with a BASIC stamp?  Another reason 
>for doing it this way is that you could hold up the following characters
>so they don't get printed as the carriage is on its way back.  Maybe.
>I haven't thought about the timing issue, but maybe using 7.00 unit code
>the printer would run faster enough to allow it to catch up to the input.
>Maybe you could find some 75WPM gears and then there would be no problem
>with running the printer faster.
>
>Making the parts by hand is rather a tough job, as you'd have to make
>the function bars that go behind the vanes.  But if you must go that way
>get back to me, as I have some but not all of the parts.
>
>Another possibility - back in the days of the Model 26 on radio.  The
>Model 26 never had, to my knowledge, a Teletype auto CR-LF.  Somebody
>made a product he called the Auto-Mate 26 that basically had a switch
>that was hit by the carriage and a solenoid that tripped the CR-LF in some
>manner that I don't recall.  (But I think it was documented in RTTY
>magazine.)  I'm not sure if anybody ever did that for a Model 15.
>If you did this on a RO machine, so you have the space free that is 
>normally occupied by the keyboard, I could imagine making something
>with a couple of hooks that hook over the CR and LF push bars - or
>maybe you have to pull them up rather than down.  Anyway a yoke with
>the hooks, and a string to pull it up or down and a solenoid to pull
>the string.
>
>Another case you want to deal with is the CR not followed by a LF.  I
>don't remember if the M15 auto-CR-LF kit deals with that.  I reminds me
>of a mod that some of us did to Model 28s for radio work.  Irv Hoff
>had something to do with working out the details, which I no longer
>remember correctly.  One reason Irv got involved that some mischievous
>people were starting up his autostart machine and sending bunches of
>linefeeds to throw out all the paper.  So this change, which I believe
>did require putting in some of the auto-CR-LF parts, did something like
>disable carriage return, do both CR and LF on receipt of LF, and suppress
>LFs after the first until there had been some other character.  Or maybe
>it did CR and LF on receipt of CR and ignored LFs.  This does mess up
>the ability to do some picture things that require overstrikes.  Such
>as    OO  CR  ..   "here's looking at you, baby"
>
>If you use the K6STI RITTY program he already puts out a cleaned-up
>Baudot signal while receiving, so you can drive a printer from that
>and not be bothered by overstrikes.  I wish we could get the author of
>MMTTY to do likewise, and maybe with enough requests he will.
>
>
>
>
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