[GreenKeys] CRLF or not CRLF?

Sun Jul 30 15:04:46 EDT 2017

One more voice to the fray...

The initial thought was simply to have a category for real teletype machines (Kleinschmidt, Creed, Teletype, etc.) to be included and recognized in the RTTY Round Up.

Years ago, it was these machine that served in the military, news rooms, railroads, Western Union, ma Bell and other locations to provided a needed communications mode for the free world. For the most part, this history has faded in to the past... only remember vividly by those of us that care about these beasts.   RTTY at one time was defined as radio communications via some sort of teleprinter/tape configuration.  This definition has been long forgotten.  To bring the machines back for one weekend a year as part of the Round Up would at least provide some focus to this history.  It really doesn't matter how your set up is configured.... enter and retrieve the exchange via some heavy metal is all that is needed during this one weekend on January.  

There is no need to be concerned in competing with those using Fldigi and MMTTY.  It's about the machines and what they have done for all of us.  With a little luck, maybe heavy metal will get mentioned again in QST in the 21st century.

My 2 cents.

de Jim - K8ARY

PS - As I recall in the Air Force, we use 2 CR and a LF followed by LETTERS at the end of each line of type.  The two CR gave time for the carriage to return and the LETTERS insured the proper shift setting for the new line of print.

On Sun Jul 30 2017 11:15:28 GMT-0400 (Eastern Daylight Time), Nick England <navy.radio at gmail.com> wrote:

Hey I'll stir the tempest in a teapot some more. It is a relatively calm Sunday morning. So, I think you are saying that I can use my 28RT for speed change because it has a mechanical 60wpm serial to tape converter plus mechanical tape to 100wpm serial converter. Serial in and serial out. But I can't use my Dovetron because it has a non-mechanical 60wpm serial AFSK input to 100wpm serial Baudot output. It uses UARTs to do this internally but you never see anything but serial AFSK in and serial 60ma loop Baudot out. Whatever. 
Now you got me trying to figure out how to make a mechanical Bardot-ASCII converter.   And I don't even have an ASCII machine. 
Have fun Nick

On Sun, Jul 30, 2017 at 10:17 AM Jeffrey Angus <jdangus at att.net> wrote:

On 7/30/17 8:32 AM, Paul Heller wrote:
> If the powers that be say conversion from current loop 5 bit to 8 bit
> is not
> allowed, then we knock out 33s and go back to 32s, 15s, 28s, etc.
That's the distinction I've been trying to point out.
And for what it's worth ONE of the acceptable modes in the ARRY RTTY
Roundup
is ASCII (which I assume is running at 110 baud.)
So, yes, you CAN run a model 33. Just not as a "dumb terminal" on a KAM
decoding
5-level Baudot at 60 WPM.

A terminal unit just converts the raw data from tones to a keyed loop.
All the distortion and speed errors (i.e 61 WPM vs 60 WPM) are present
and the
machine decodes that into printed test (or punched tape).

For the pedantic, A CV-89 is a converter for RATT.
A HAL ST-6000 is a terminal unit for RTTY.
Both are raw data in, raw data out. The connected machine, Teletype,
Lorenz, Mite,
Kleinschmidt or Creed is what does the decoding of the raw data into
print (or tape.)

As to the "transistors in a Model 32" They are STILL only passing raw
data. The machine
itself mechanically decodes the raw data and turns it into printing on
paper or punched
paper tape.

The CV-89 and the Twin City TU use vacuum tubes.
The HAL ST-6, ST-6000 and the Dovetrons are solid state.
With the exception of the Dovetron running in the conversion mode, they
are all raw
data in, raw data out and the machine connected does the decoding to
print or tape.

--
Jeff-1.0
www.foxsmercantile.com

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-- 
Nick England K4NYW
www.navy-radio.com
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