Re: [digitalradio] 30 Meter digital

2007-12-22 Thread Rick
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.

Re: [digitalradio] 30 Meter digital

2007-12-22 Thread Rick
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

Re: [digitalradio] 30 Meter digital

2007-12-22 Thread kh6ty
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. Phone is the easiest to operate and obviously the preferred mode. During the bandwidth petition discussions, it became clear

[digitalradio] Re: 30 Meter digital

2007-12-22 Thread jhaynesatalumni
--- In digitalradio@yahoogroups.com, kh6ty [EMAIL PROTECTED] wrote: 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. We could, for the sake of argument, use that

Re: [digitalradio] 30 Meter digital

2007-12-22 Thread Rick
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

Re: [digitalradio] 30 Meter digital

2007-12-22 Thread kh6ty
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

Re: [digitalradio] 30 Meter digital

2007-12-22 Thread Rick
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

Re: [digitalradio] 30 Meter digital

2007-12-22 Thread kh6ty
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

[digitalradio] Re: 30 Meter digital

2007-12-22 Thread Brad
As they say in the Classics Sucks to be you Brad VK2QQ (Now running SSTV Mobile on 10.134, and Good Old Fashioned SSB Voice on 10.120, 10.125 and 10.1375) --- In digitalradio@yahoogroups.com, kh6ty [EMAIL PROTECTED] wrote: Rick, I prefaced my comment with It is my belief that if voice of