[aprssig] APRS remote WX opportunity

Lynn W. Deffenbaugh (Mr) ldeffenb at homeside.to
Wed Apr 18 15:24:31 CDT 2012

A 30m station for your ground-based excursion would have a better chance 
of being received.  The same is probably even true for the solar weather 
stations, which, BTW, I'd have set to every 5 minutes because at 10 
minutes you'd stand a pretty good chance of missing entire the shorter 
ISS traversals.

Lynn (D) - KJ4ERJ - Author of APRSISCE for Windows Mobile and Win32

PS.  I'm still looking for a good, cheap, lightweight, 30m APRS tracking 
system for back-country packing use.  It'd be a bonus if it could handle 
reception as well enabling APRS messaging when the conditions are right.

On 4/18/2012 4:21 PM, Bob Bruninga wrote:
> Anyone want to put their APRS or Satellite talents on the air in Mongolia?
> A Scientist goes there each summer and has the opportunity to put some small
> solar powered APRS weather trackers on the air (via the ISS).  Here is his
> idea:
> If anyone... would like to hack together 2  or 3 small solar powered APRS
> transmitters and 2 meter antennas that are attached to a very small weather
> station (ONLY humidity, pressure, temperature, sunlight) we can leave them
> on mountain tops in the GOBI of Mongolia this summer. 
> The transmitter and solar panel (with some lithium re-charge batts.)  can be
> set to squirt data every 5 or 10 minutes.  Basically, the signal will go
> straight up, and this will hit the ARISS space station APRS repeater about 4
> times per day.  If there is a receiving gateway APRS-internet station in
> Russia, China, or Japan under the footprint of the repeater, then we can get
> data on weather in the Gobi for a year or maybe more depending on the
> robustness of the transmitter, batt, solar panel.  What do you think? These
> would be non-recoverable items.  Just a thought that may interest people.
> This would be a normal HAM "no budget operation" and it has to be very
> small.
> Probably not enough time this year, so I can set up a test system this year
> on our Landcruiser there with my Kenwood HT and we can see if we can repeat
> data into the Internet with 5 watts and with APRS from the Gobi while I am
> there.  Fun stuff - I think.
>   I would love to set up remote weather stations like that deposited in areas
> where we did our work to get env. data that way, that would be so cool,
> until a wild Camelus bactrianus ate one... then maybe we could get
> gastro-physiol. data on one of them..... 
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