[GreenKeys] Formats

[wa2hwj at att.net]

ZCZC

Some TTY's have non-overline that line feeds on a CR. One of my 
Kleinschmidts line feeds at every CR, so everything comes out
double-spaced (such as when I use Heavymetal). It makes more sense
to use LTRS as a buffer instead of several CR's. 

Jack WA2HWJ

NNNN


>    A few minor comments:
> 
> 1.  It is perfectly acceptable to end a line with:
>     CR CR LF FIGS FIGS
> The key point is to send, two times, the shift character needed to place the 
> machine in the proper case for the first printing
> character in the line.
> 
> 2.  The "traditional" end of message sequence placed the machine in letters case 
> before sending the sequence of LF and N characters,
> so that a case shift character was not needed before the Ns.  In the historical 
> sense, the end of message was thus:
>    (place machine in letters case, if not already there)
>    CR CR LF LF LF LF NNNN and 12 LTRS
> Some systems used eight LF to get the last message up to the point where it 
> could be immediately town off.  The 12 letters were used
> the form about an inch of paper tape that could be immediately ripped from the 
> reperforator; it also made it very easy to identify
> the separation between messages on a paper tape visually.
> 
> 3.  We may wish to decide if we want transmissions to be "friendly" for machines 
> with unshift-on-space (UOS).
>    a)  If friendly towards UOS, then one must send a FIGS before every word that 
> begins with a figures case character.
>    b)  If UOS is not employed on the network, then one should be strongly 
> encouraged to send two FIGS when shifting into figures
> case, and two LTRS when shifting into letters case.  While by no means 
> foolproof, this improves the chances of ending in the proper
> case.  (It was required procedure on many US/NATO military radio circuits.)
>    c)  It is not unreasonable to combine both (a) and (b); i.e., use double 
> shift characters whenever they are required, and send
> FIGS FIGS before every word that starts with a figures case character.
> 
> 4.  Start of transmission: 12 LTRS is sufficient for a minimum sequence to power 
> up receiving machines.
> 
> 5.  Do we want to encourage people to start using the start of message sequence 
> discussed earlier?  That was twelve LTRS five SP two
> CR LF and then two LTRS/FIGS?  It's a good habit to form early if we are going 
> to employ the selective calling procedures.
> 
> 6.  Should our "welcome message" summarize the selective calling procedures?  
> Here is a suggestion:
> SOME STATIONS ON THIS NET IMPLEMENT SELECTIVE CALLING PROCEDURES.  FOR 
> COMPATIBILITY, TRANSMISSIONS OF THE FOLLOWING FORMAT ARE
> STRONGLY ENCOURAGED:
> 
>    12 (LTRS)  5 (SP)  CR CR LF AND EITHER 2 LTRS OR FIGS AS APPROPRIATE
>    (SELECTIVE CALLING SEQUENCE - SEE BELOW)  CR CR LF
>    TEXT OF MESSAGE, ENDING IN LETTERS CASE.
>    CR CR  4 (LF)  NNNN  12 (LTRS)
> 
> THE SELECTIVE CALLING SEQUENCE IS ONE OR MORE STATION SELECTION CODES SEPARATED 
> BY SPACES, FOLLOWED BY "DE" AND YOUR FULL CALLSIGN.
> THE STATION SELECTION CODE IS THE LAST FOUR CHARACTERS OF THE CALLSIGN OF THE 
> DESIRED RECEIPIENT.  FOR EXAMPLE, TO SEND A MESSAGE TO
> THIS STATION FROM K3NA, THE MESSAGE WOULD BEGIN:
> 
>    12 (LTRS)  5 (SP)  CR CR LF  2 (FIGS)
>    4EEG DE K3NA  CR CR LF
>    -- TEXT OF MESSAGE --
>    CR CR  4 (LF)  NNNN  12 (LTRS)
> 
> TO SEND A MESSAGE TO ALL STATIONS, USE ZCZC AS THE STATION SELECTION CODE:
> 
>    12 (LTRS)  5 (SP)  CR CR LF  2 (FIGS)
>    ZCZC DE K4EEG  CR CR LF
>    -- TEXT OF MESSAGE --
>    CR CR  4 (LF)  NNNN  12 (LTRS)
> 
> I hope this helps.
> 
>    -- Eric K3NA
> 
> 
> -----Original Message-----
> From: Roy Norris [mailto:Rnorris at charter.net]
> Sent: 2004 May 8 23:42
> To: William N. Carver; Bill Henry; Bob Camp; David Ross; Don and Diana 
> Cunningham; Don Robert House; Eric Scace K3NA; Frederick A
> Sell; Gary Chatters; George B. Hutchison w7tty; Gerry Block; gil smith; 
> greenkeys at mailman.qth.net; hsvham; Jack Hart; JerryL;
> jhaynes at alumni.uark.edu; John Burch; John Lawson; John Parker-KE4GR; Marvin 
> Collins W6OQI; Richard Gillingham; Robert Downs; Stan
> Wilson; telegrapher at att.net; Tom Elmore; tony j. podrasky
> Subject: STatus of HoffNet on 10.137300 (mark)/10.137130 (space)
> 
> [...snip...]
> 
> ALL STATIONS, REGARDLESS OF TYPE OF EQUIPMENT ARE WELCOME.
> THIS NET ENCOURAGES AND PROMOTES THE USE OF MECHANICAL
> TELETYPE EQUIPMENT. TO ACCOMODATE TELETYPE MACHINES OF
> VARRIOUS VINTAGE, ALL PARTICIPANTS ARE REQUESTED TO END
> EACH LINE OF TRANSMITTED TEXT WITH THE SEQUENCE:
> 
>          (CR)(CR)(LF)(LTRS)(LTRS)
> 
> ALL TRANSMISSIONS SHOULD BEGIN WITH:
> 
>       20 (LTRS) CHARACTERS (CR)(CR)(LF)(LTRS)(LTRS)
> 
> AND ALL TRANSMISSIONS SHOULD END WITH:
> 
>     (CR)(CR)(LF)(LF)(LTRS)(LTRS) NNNN
> 
> [...snip...]
> 
>