Peter,
Hoff, K8DKC, also includes snippets about FCC regs regarding RTTY. You can
follow
why we are where we are with the FCC.
I learned RTTY in the last 5 years from that series, this reflector, and the
MMTTY reflector.
RTTY has a very rich and interesting history history!
73
Kai
On 4/15/2014 4:51 PM, Peter Laws wrote:
On Tue, Apr 15, 2014 at 2:14 PM, Kai<k.siwiak@ieee.org> wrote:
Dennis,
Great question!
See the second installment of RTTY articles by Irvin Hoff, K8DKC,
"Operating the Teleprinter", QST, Feb 1965, pp 29-35. He wrote 13 articles
in QST in 1965-66 on all aspects of RTTY. the reciprocal of 45.454545...
baud (we round to 45.45, some EUs use 45 baud) equals 22 mS, the basic
timing interval for the teletype code. He also discusses the roots of 1,
1.5, 1.43, 2 pulse stop bit intervals.
The series is very interesting reading, and traces the archaic roots from
land-line tone units today's RF amateur-RTTY standard.
Can't say as I'll read them all but I pulled this one from the archive
and it's pretty interesting. About to read about USOS ...
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