My use of the band is mostly based upon propagation and, as you pointed
out, minimal competition with other stations. This is particularly
important with non-cw digital modes since they are typically much wider
than cw and can not tolerate too much overlap in interference.
Here in the U.S.
I wish that more radio frequencies would have NVIS operation than they
do in our part of the world, but the FoF2 is often way below 10 MHz so
30 meters can not be used. At 0930 Local time, the FoF2 is only 2 MHz
across much of the U.S. so hams would only have 160 meters available. I
notice
.
Skip KH6TY
- Original Message -
From: Rick [EMAIL PROTECTED]
To: digitalradio@yahoogroups.com
Sent: Saturday, December 22, 2007 10:13 AM
Subject: Re: [digitalradio] 30 Meter digital
My use of the band is mostly based upon propagation and, as you pointed
out, minimal competition
Skip,
It is almost for sure that if the FCC equated DV as being similar to any
other digital mode, that DV would not take over the ever decreasing size
of the text digital portions of the HF bands. There are several reasons:
- the lower portions of the bands, historically used for the earliest
Rick, I prefaced my comment with It is my belief that if voice of the
same bandwidth were allowed everwhere
data is allowed, the data segments of the bands would be overrun with
phone stations using DV.
Perhaps it is not clear what I meant. For example, if someone comes up with
a DV of 300
If we really could run voice on 300 Hz BW, I would support using it in a
narrow digital area since I think that it is good practice to provide
protection for narrow modes against the wide modes. Ironically, that is
not what is currently in the FCC rules. We have very wide BW modes,
running in
Rick,
comprehension. But let's say a miracle occurs and you could get greatly
improved quality with a narrow bandwidth. If that happened, we would see
a migration to the narrower voice modes which will free up a lot of
bandwidth.
That is the hoped-for goal. How we are able to handle modes
I was reading the 30M Digital Group web page (
http://www.30meterdigital.org/ ) and thinking a bit... Much of what
is posted there makes sense to many of the people that are avid users
of the digitalradio Yahoo group. The band is not crowded with
contests, there is less competition with other
Andrew O'Brien wrote:
I was reading the 30M Digital Group web page (
http://www.30meterdigital.org/ ) and thinking a bit... Much of what
is posted there makes sense to many of the people that are avid users
of the digitalradio Yahoo group. The band is not crowded with
contests, there is
