[GreenKeys] Info needed

[Til128 at aol.com]

Thanks! Great information.
 

Is that why I have seen call signs in the pix?
 

On overstrike pix, some were "hidden" in the second pass.
 
Or perhaps it was to prevent plagiarism?  ;-)
 

TT

 
 
In a message dated 3/5/2016 1:29:07 P.M. Eastern Standard Time,  
rmowery28146 at earthlink.net writes:

For a good number of years around the 1980's many of the pix  were sent on 
14.090.  Nothing offical, but that seemed to be the most  used one.  There 
was sort of a net that met on Saturdays  that ran  at 60 WPM about all day 
and on Sundays at 100 wpm.  At other times they  would just call CQ PIX on 
that frequency.
 
At that time you had to stop every 10 minuits and send your  call in CW, if 
using VHF where voice was allowed, you could say your call  .
It was also legal to send the ID by shifting your  carrier.  When sending 
170 hz shift some would shift the whole 170 hz and  some would shift maybe 50 
or 60  hz in an attempt to keep the demodulator  from printing out odd ball 
characters.
People would most often stop sending ,wait about 5 seconds,  send the 
call,and another 5 seconds start back with the pix.  That gave  the  receivers 
time to put the demodulator into stand by and start back  up.
 
Something similar would have to be done now.  However  you could embed your 
call in the pix to be sent every 10 minuits as it is now  legal to identify 
with the normal rtty keyboard and no need to go to CW for  the ID.
 
 
There was no time limit as long as you stopped to ID every  10 minutes. 
Some were short but seems that many were from 15 to 25  minutes.  They could 
run much longer.
 

 
While he was not offically in charge Rickey WA0CKY seemed to  run the 
Saturday and Sunday pix 'net' most days.
He was big in the pix during those days and had a great  signal.  He had a 
magentic tape system that he sent the pix from.   It would automatically 
stop and ID for him.  I don't know how he did  that.
 
Hope that helps.
 

----- Original Message ----- 
From:  _Thomas Tillson via GreenKeys_ (mailto:greenkeys at mailman.qth.net)   
To: _greenkeys at mailman.qth.net_ (mailto:greenkeys at mailman.qth.net)  
Sent: Saturday, March 05, 2016 1:04  PM
Subject: [GreenKeys] Info needed


Hi Gang:
 
Back in the day, (before my time) does anyone recall the protocol for  
sending and receiving TTY pictures?
 
Was there a certain time/day?
 
Was there a time limit?  I understand you had to send your call  sign very 
15 minutes...how did that work?
 
Was anyone "in charge"
 
Just looking for general info - but if you want to be specific, that's  OK 
too.
 
Thanks in advance.
 
Tom


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