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VE2HAR > MT63 18.03.05 02:06l 62 Lines 1806 Bytes #-6999 (0) @ WW
BID : 47165SENTTO
Read: GUEST
Subj: Re: [MT63] Digest Number 865
Path: DB0FHN<DB0RGB<OK0PPL<DB0RES<DK0WUE<7M3TJZ<ON0AR<VA2HAR<VE2HAR
Sent: 050318/0004z @:VE2HAR.#MTL.QC.CAN.NOAM Laval #:43479 $:47165sentto
Hello John,
>> With respect to the mode, well I am not convinced that MT63 works
better than MFSK under really poor conditions, although the baud rate
is higher. <<
Forgive me for sticking my aging brain in here, but I couldn't resist.
In regard to emergency data communications, when all is said and done,
when conditions are truly abysmal, there just ain't no substitute for
the old-fasioned AMTOR ARQ mode.
When done correctly by someone who knows how to use that mode, IMHO
it can't be beaten for accurate, error-free communications. When you
realize that the SITOR specs (CCIR Recommendation 476 et al) that
really govern AMTOR call for NOT MORE THAH THREE CHARACTER ERRORS IN
ONE HUNDRED THOUSAND CHARACTERS, it is hard to find another SCD mode
that can do as well under abominable HF conditions.
After all, what difference does the baud rate make when the link is
repeatedly lost?
Just my not-so-humble opinion based on a few long decades of working
with this stuff.
73,
Norm Sternberg W2JUP - NNN0TOA
Plantation, FL
(TS-2000/PK-232/DSP-2232/ATU-1000/GAP Titan-DX)
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