[GreenKeys] Model 19 - Motor speed setting

[Sheldon Daitch]

The AP slow speed wires, using M-15s were originally set up for 60 WPM and
sometime in the 1960s, I believe, they were upgraded to 66 WPM.

The M-15s, to the best of my knowledge, never ran at 75 WPM.  When I
worked for AP in NC in late 1970s, we were running a mix of M-15s and
Extel printers for the radio wire, and they were all set up for 66 WPM.

I had asked about why the AP was still using M-15s and not the newer M-28s
and was told in tests, the M-28 did not hold up under 24/7 operations,
and required far more maintenance than the M-15s (in the same service).

Sheldon



Charles Ring wrote:

> Roy Morgan wrote:
>
> > At 01:41 PM 2/5/02 -0800, you wrote:
> > >how much for sync motors Ton, and how much for
> > >fny gov onces you hae?  have any non 60 wp, gears?
> >
> > John,
> >
> > Do not run a Model 15 at 100 WPM.
> > It will smash itself to pieces.
> > Get a Model 28 for that.
> >
> >
>
> the Associated Press radio wire ran 15's at 75 wpm for quite a few
> years, i wonder what reliabilty they had with them. UPI stayed at 60
> until they went to 1200.
>
> 73 de W3NU
>
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