[GreenKeys] SELCAL

[Bob Camp]

Hi,

I would say this is pretty much what we are after. The only thing I'm 
still holding out for is *somebody* to agree with my possibly bizzare 
reading of two sections of the regs that *might* allow a HF RTTY 
repeater as a "message store and forward system".

	Take Care

		Bob Camp
		KB8TQ



On Apr 21, 2004, at 8:45 PM, tony j. podrasky wrote:

> Hi Guys;
>
> I was a part of the autostart group on 14.075MHz back in the 70's.
>
> Some of the features that were there:
>
>   o Most stations were left fully operational 24hrs/day.
>
>   o With the sequence <callsign>FIGS BLANK H the transmitter
>     would kick in and send an answerback message - usually
>     just the callsign.
>
> This was good because you knew you were on frequency and that
> you could "hit" another station. Some guys had phaselocked loop
> TU's so if you were off frequency when you called them, their
> crystal controlled transmitter could be zero-beated.
>
>   o Some guys had reperfs and T-Ds set up so you could relay
>     messages back and forth.
>
>   o The ZCZC sequence was used as a general call, but since
>     the protocol was not strictly followed, some guys set
>     up their SELCALs for <SPACE DE SPACE> which almost
>     always was used.
>
>   o 6 N's <NNNNNN> was usually sent out - to make sure that
>     all the machines on the loop were returned to standby
>     at the end of traffic.
>
> Because of the amount of work required to get a station
> on RTTY, protocol was held in high esteem:
>
>   o Sending out the NNNN sequence at the end of xmit.
>
>   o Ending a transmission with the carriage at the
>     beginning of a fresh new line.
>
>   o Making sure that you didn't exceed the 66
>     char/line - and definitely not past 72!
>
>   o ACTUALLY SENDING out the chars to begin a new line
>     (these days, when I use the 28-KSR I have to sit
>     at the machine and use the local CR/LF keys
>     constantly because of the lack of training on
>     the RTTY circuit).
>
>   o Sending <CR CR LF LTRS LTRS> to begin each new line
>     to give the older machines enough time to get to
>     the left margin.
>
>
> I don't know if this can ever be duplicated again,
> but it was so much fun that it is worth the try.
>
> 73,
>
> tony - W6ESE - ex WA2EAA
> NNNNZCZC
>
>
> --
> Tony J. Podrasky | LOST:
>   tony.podrasky  |   Gray and white female cat.
>        @         |   Answers to electric can opener.
>      hp.com      |
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