[GreenKeys] ITTY SOFTWARE UPDATE

[George B. Hutchison]

To ALL ITTY LISTENERS/PARTICIPANTS - - -

I have asked Bill, K7TTY, to do a review and improvement of the ITTY 
scheduling software.

To this end he has come up with some improvements which will 
hopefully allow us to filter  out a large percentage of the crap that 
we seem to be hit with from the pharmaceutical and fast buck 
spammers.

I will be installing the software shortly, so please expect some 
interruption of ITTY until it is assured that the improvements are 
functioning.

Thanks to all for the slowly increasing use of ITTY. There are one or 
two of you who are on the circuit 24 hours a day, copying or at least 
receiving the callbands as well as the news items.

Sheldon is pretty well accuate as far as the speed considerations on 
the wire circuits.

Distribution on the major wire circuits was done principally using 
the Lenkurt 25A multiplex system which had about 20 possible 
channels. The radio wire on UPI was on Channel 16.

AP ran 67WPM on their five-level circuits, while UPI was 60. The 
teletypesetter circuits (6-level code) ran using 67 speed gears on 
all machines. Very few of the UPI or AP circuits went above 67WPM. 
The machines would just not hold up at the higher speeds.

Commodity News Service also used the Lenkurt system, but inasmuch as 
they were model 28's with selective printing (most in my service area 
were locked open so everything on the wire was received by all) their 
circuits were all 100WPM.

Never had much to do with Dow-Jones, but they were somewhere in left 
field. I had a Catholic News Service customer in Boise who used a 
model 38 wide-carriage with 66 speed gears which rode the Dow-Jones 
circuit.  Don't recall what the exact baud rate was, but it was eight 
level ASCII with the 66 speed gears. That machine was a real pain in 
the ass because it was a wide carriage machine, but used 8-1/2 inch 
paper, and it was almost always jamming, but due to operator error. 
An Extel would have been the right replacement for that pile of junk.



More later,

George - W7TTY