Walt,

What you are describing sounds very close to MT-63.

73,

Rick, KV9U


DuBose Walt Civ AETC CONS/LGCA wrote:

>There has been some discussion about what mode does what and what is
>needed/desired.
>
>We have had a little discussion on what the problems were during Katrina
>with digital communications.
>
>During hurricanes Katrina and Rita, I worked with a disaster relief group
>and operated as their HF net control station and a participating station.
>Our network in Katrina ran from the Mississippi Gulf Coast up to Atlanta
>back to Louisiana including New Orleans, Batron Rouge, Hammons, Bogalusa and
>north, Alexandria, Lafayette, Beaumont Texas, Dallas and San Antonio Texas.
>
>Most of the time we would have liked to use a keyboard-to-keyboard
>mode...probably 60% of the time.  20% to 30% of the time Sideband Voice was
>Ok.  But there was 10% of the time when we would have liked to be able to
>send a rather large data file from our Dallas, San Antonio or Atlanta
>stations to all of our stations.  In many instances conditions were so poor
>that voice communications didn't work very well at all.  Most of the time
>when sending smaller data packages, reading them by voice worked Ok;
>however, we have many request for repeats and we had to relay many times.
>
>We only operated on three frequencies and primarily on 40 and 75 meters
>since propagation programs showed that these were the best frequencies to
>use at the time.
>
>I might mention that our net operations and net control stations operate
>much like a state or local EOC (I worked many years in a large city EOC).
>
>When I think of what I would like in a mode to support the type of
>communications I was involved in (and I think most of the disaster relief
>agencies such as the Red Cross, Salvation Army and the like), I would like a
>robust keyboard-to-keyboard mode that would accept typing at about 50-60
>WPM.  Also a robust mode that could send data files at 200 WPM and be robust
>enough to work right down in the noise.
>
>As far as frequency selection, when you only have 2 bands that will support
>propagation and use only one frequency on each band, channel selection is
>not a problem.  An automatic call ability, such as SELCALL, would be very
>nice to have.  
>
>Most of the other capabilities I hear about are nice but not really needed.
>
>I believe that the type of operations I was involved in, and will be again
>this hurricane season, are useful in passing many if not most types of
>traffic on HF.
>
>Thanks and 73,
>
>Walt/K5YFW
>
>  
>



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