Don,
This may help. Here are a couple of FAQ's they did not ask, here they are with
my answers.
"What is the current limitation on bandwidth of digital emission (except
two-tone RTTY) at MF and HF?"
The answer is:
What is permitted today with no changes in the regs, is digital signals (except
two-tone RTTY) with the following bandwidths:
160m - 200 kHz BW
80 m - 100 kHzBW
60m - 2.8 kHzBW [confined to the center of the channels, including two tone
RTTY]
40 m - 125 kHzBW
30 m - 50 kHzBW
20 m - 150 kHzBW
17 m - 42 kHzBW
15 m - 200 kHzBW
12 m - 40 kHzBW
10 m - 300 kHzBW
The above are slightly lower for non-Extra class licensees in some bands.
"What is the bandwidth limitation on two-tone RTTY today?"
All MF and HF bands: 1.5 kHz, except 60 m channels where 2.8 kHz is permitted
for all including RTTY.
"What is the data bandwidth limitation asked for in RM-11802?"
All MF and HF bands, all digital data emissions, including RTTY, limited to 2.8
kHz.
In the MF and HF phone bands there are likewise no statutory BW limitations, but
the widest that I know off is D-Star digital voice which occupies about 6 kHz,
and good 'ole AM - also 6 kHz.
That's it. That's all there is.
73
Kai, KE4PT
On 2/26/2014 12:47 PM, Don AA5AU wrote:
I don't understand this one:
* Shouldn’t 2.8 kilohertz bandwidth data emissions be restricted to the
band segments where phone and image communications are permitted?-
While some commenters have argued for that, it is far beyond the scope of the
ARRL petition. It would require a complete reordering of the regulatory scheme
for the HF bands which would be controversial, to say the least.
I don't understand the part about having to completely reorder the regulatory
scheme. That sounds like a bunch of malarkey.
And are they trying to say the current proposal is not already controversial
enough?
Don AA5AU
________________________________
From: Ron Kolarik<rkolarik@neb.rr.com>
To: RTTY<rtty@contesting.com>
Sent: Wednesday, February 26, 2014 1:02 AM
Subject: [RTTY] RM-11708 FAQ posted
The ARRL FAQ is up
http://www.arrl.org/rm-11708-faq
I haven't had time to go through it yet.
Ron
K0IDT
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