[RTTY] ARRL attack on current RTTY users

[Jeff Blaine]

The guys promoting the winlink/pactor 4 stuff keep talking about improved
emcom support.  But I'm not sure how these two items tie together.

Can someone explain how the emcom needs are not met with the currently
supported modes?   I have seen a lot of MARS related winlink comments but
that group has a different focus than the general ham population.  Not to
mention MARS has it's own set of dedicated frequencies.

73/jeff/ac0c
www.ac0c.com
alpha-charlie-zero-charlie

-----Original Message----- 
From: Kok Chen
Sent: Saturday, November 23, 2013 12:02 PM
To: k.siwiak at ieee.org
Cc: rtty at contesting.com
Subject: Re: [RTTY] ARRL attack on current RTTY users


On Nov 23, 2013, at 8:00 AM, Kai wrote:

> Again, to keep what we can do today, (up to the 300 baud RTTY with up to
> 1000 Hz shift) would require a bandwidth of
>      300+1.2(1000) = 1500 Hz. THAT is the current RTTY teleprinter mode 
> limit

That is actually a darn good suggestion, and does not deviate from what we
can do today on FSK with the current regulations.

I.e., the narrowest 2 tone FSK bandwidth you can get by using the maximum
symbol rate and FSK shift that is allowed from the existing regulations.

This would include 850 Hz RTTY shift too, which will allow good
experimentation to further study selective fading.

Mind if I plagiarize that to include in my own comments to the FCC?

P.S.  It would also de-legalize Pactor III and create a different religious
war.  (Pactor III is 2K20J2D emission.)

73
Chen, W7AY

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