[GreenKeys] Automatic Carriage Return Line Feed for Model 15 & Model 19 Printers

[Wa3frp]

Hi Jim, 

Yes you are correct.  It was called the Interstate Autostart Network and was on or about 14074.5 kHz.  I still have a crystal for that frequency!  The same guys who would mess up the net would also start sending junk when we were trying to send picture tapes.  One way that Irv prevented the excess LFs and the wasted paper was to look for ZCZC as a header and W6FFC right after that. Certainly notfoolproof but effective.

73
Russ - WA3FRP
wa3frp at aol.com




-----Original Message-----
From: Jim Haynes <jhhaynes at earthlink.net>
To: COURYHOUSE <COURYHOUSE at aol.com>
Cc: wa3frp <wa3frp at aol.com>; greenkeys <greenkeys at mailman.qth.net>
Sent: Mon, Jan 30, 2012 2:39 pm
Subject: Re: [GreenKeys] Automatic Carriage Return Line Feed for Model 15 & Model 19 Printers


On Mon, 30 Jan 2012, COURYHOUSE at aol.com wrote:
  
 Also, I have a couple of other documents that may be of interest.  These are
 for Model 28 machines and deal with
 non-overline, automatic carriage return & line feed and unshift on space.
That reminds me of some work involving W6FFC.  He and friends had set
p an autostart net so they could send messages to unattended receivers.
rv wasn't universally popular, so there were some pranksters who would
ire up on the autostart frequency and send nothing but line feeds, to
nroll all the paper in the machine.  So Irv came up with some stunt box
acks to prevent that kind of vandalism.  I have one of the stunt boxes
omewhere around here, but don't remember exactly what the treatment was.
aybe it's in one of those articles you have.  I remember it involved
aving the machine do a LF when it received CR, which eliminated the
verline problem and also prevented line feeding on receipt of multiple
ine feeds.  And then there was something to cause only a single line feed
n response to multiple CRs.
Jim W6JVE

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