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[aprssig] 6m MS network Performance Monitoring!

Robert Bruninga bruninga at usna.edu
Wed Jan 2 22:27:00 UTC 2008


> 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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