[GreenKeys] M28 features for RTTY operation today?

[Russ Miller]

On 2/25/19 8:27 AM, Paul Heller wrote:
> I’ve always wondered: do two characters fr the incoming
> transmission get dropped while the machine is executing
> the auto CR LF?

The answer is no.  No characters are lost.  The Auto CR LF function is
purely mechanical and the selector magnets continue to receive and decode
the message.  The Model 28 is so well designed that the CR occurs very
quickly.  Now, you might see a character appear on the left hand side of
the page printer and not completely in line with the first character of the
previous line.  But, you can still see what was sent.

73

Russ WA3FRP


On Mon, Feb 25, 2019 at 10:03 AM Ralph Mowery <rmowery28146 at earthlink.net>
wrote:

> When I built a ‘glass teletype’ out of an 8080 processor board and wrote a
> program I set it up so that after 65 characters it would look for a space
> and then send a CR CR LF LTRS to start a new line.  If it reached 72
> characters that sequence would be inserted.   As I has an ASCII keyboard I
> set the Enter key to do the same.  I also had it set so that I could set it
> where it would overline and I would have to enter the end of line sequence
> by using a control key on the keyboard and a letter for each of the  things
> like LTRS and FIGS.
>
>
>
> I guess that as RTTY became more computer than mechanical, the computers
> would automatically start a new line on the screen, so the end of line
> sequence was not sent as many were unaware of how the printers operated and
> it took some time for the carriage of a model 15  to return.
>
> I really hated to keep watch on the printer so I could mechanically do a
> return and line feed.
>
>
>
>
>
> At that time my printer was a model 19 so there was no option for me to
> install a no over line on the printer.
>
>
>
> Ralph KU4PT
>
>
>
>
>
>
>
> *From:* greenkeys-bounces at mailman.qth.net [mailto:
> greenkeys-bounces at mailman.qth.net] *On Behalf Of *Russ Miller
> *Sent:* Monday, February 25, 2019 8:05 AM
> *To:* Steve Garrison
> *Cc:* Greenkeys; Nick England
> *Subject:* Re: [GreenKeys] M28 features for RTTY operation today?
>
>
>
> Hi Nick,
>
>
>
> MMTTY has two options that apply:
>
>
>
> The first is to send an automatic CR LF at the start of every
> transmission.  The other option that can be selected is "word wrap on
> keyboard"  That option keeps the letter of a word together when you get to
> the end of a line. However, this is only on the computer screen of the
> transmitting station as the size of the MMTTY window will vary depending on
> how the individual operator has set up his MMTTY window. Neither is a big
> help for a mechanical RTTY machine operator.
>
>
>
> The bottom line that always works for me...install "non-overline" and
> "auto CR LF" per the instructions from Irv in RTTY Journal.  Remember, you
> can also use the red LOC LF and LOC CR keys if something goes wrong.
>
>
>
> Thanks 73
>
>
>
> Message delivered to steve.n4tty at gmail.com
>
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