[RTTY] TX9 -Reversed I'm confused

[Fred Souto Maior]

I don't care if they are "up-side-down" or "down-side-up".... I would like
to copy them, to have propagation,
to have their beam pointed to us etc etc... Only had few
minutes to try this morning then he faded down... Let1s
try again tomorrow... Congrats Mike and the others that wkd them. Hope my
time will come trought ... Snif snif...

Fred - PY7ZZ
----- Original Message -----
From: <W0YR at aol.com>
To: <w2nra at optonline.net>; <rtty at contesting.com>
Sent: Friday, October 15, 2004 1:18 PM
Subject: Re: [RTTY] TX9 -Reversed I'm confused


> Yes, it IS an issue.
>
> Let me help you understand how RTTY works.
>
> An RTTY signal consists of pulses at two distinct frequencies.  With a BFO
> turned on, these become two audio tones.  The (now) standard spacing or
"shift"
> is 170 Hz.  A Baudot character consists of a start pulse, five data pulses
and
> a stop pulse.
>
> The two conditions are called "Mark" and "Space."  One tone is for Mark
and
> the other is for Space.  If the tones are juxtaposed, the characters
printed
> will be incorrect.   For instance, the letters "Y R" become "6 4"
>
> There is a standard to which stations must adhere in order to be printed
> properly.  If stations do not adhere to this standard (which the
Chesterfield
> station is not doing,) the results are all inverted.
>
> When transmitting and receiving RTTY, the other station should not be able
to
> tell if you are transmitting using an AFSK method or true FSK.   The end
> result is the same.  If the placement of the two tones is reversed, the
result
> will be inverted.
>
> My point is, if the Chesterfield station would just throw ONE switch, we
> wouldn't even be having this discussion!
>
> I worked them on 15, 20 and 40 and had no problems.  Perhaps one of their
ops
> has set things up incorrectly.
>
> 73,
>
> Mike
> W0YR/4
>
> _______________________________________________
> RTTY mailing list
> RTTY at contesting.com
> http://lists.contesting.com/mailman/listinfo/rtty


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