[GreenKeys] Info needed

[Ralph Mowery]

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 
  To: 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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