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[aprssig] 6m MS network Performance Monitoring!

Robert Bruninga bruninga at usna.edu
Thu Jan 3 16:40:43 UTC 2008


> I think I might have missed some details 
> - where's the pallet of radios 
> coming from?  What type are they, and how much?

It is a local project so far, and someone in the AMRAD group is
putting together the arrangements.  So far, he has had a few
radios, but hopes to put together a larger package.  I'll let
everyone know if the radios become available...

Bob, Wb4APR
> Scott
> N1VG
> 
> Robert Bruninga wrote:
> >> I have revised my APRS MS web page to focus 
> >> on this exciting new capability.  
> > 
> > Wow, and I just added one more thought.  And that is that
each
> > Igate can
> > Also be probing the 6m sky with its own periodic beacon
packets.
> > Then, if any one of the other dozens of 6m Igates hears it,
then
> > it is visibile back to the originating Igate in real time as
> > feedback.  The Igates themselves then can easily build their
own
> > statistics on their own real-time success rate.
> > 
> > They can use this to fine-tune the optimum statistical
transmit
> > rate to obntain the performance we desire! (97%) probablitiy
of
> > delivery... PLUS real time performance data on the whole 6m
MS
> > network!
> > http://www.ew.usna.edu/~bruninga/meteors.html
> > 
> > Bob, WB4APR
> > 
> > 
> > 
> > One thing down the road we might need is for
> >> ALOGGER to also TX messages back into the disaster area.
> >> Something like this:
> >> 
> >> Someone send an EMAIL to the disaster area.  All 6m Igates
see
> >> the message and schedule it for transmitting.  Each Igate
> >> transmits according to the normal 15 second TX windows for
> > each
> >> quadrant of the country.  They do this for say one hour
(TBD).
> >> 
> >> All we have to do is figure out the probability
distribution
> > and
> >> set the TX time for that amount of time that will give a 3
> > sigma
> >> chance of delivery (97%)... And the MS Igates can share the
> >> schedule if more than one is in any given area.
> >> 
> >> There is a pallet full of 6m radios available.  Mike in the
> >> AMRAD group is looking into a buil purchase.  And with the
100
> >> foot long wire giving great gain (12 dBi), the antenna
should
> > be
> >> trivial.
> >> 
> >> 
> >> _______________________________________________
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> >> aprssig at lists.tapr.org
> >> https://lists.tapr.org/cgi-bin/mailman/listinfo/aprssig
> >> 
> > 
> > 
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> > 
> > 
> 
> 





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