[aprssig] National Park on the Air (Mammoth cave!)

Robert Bruninga bruninga at usna.edu
Thu May 26 20:02:22 CDT 2016

In 2013, we used APRS to demonstrate the longest wireless cave penetration
of nearly a mile underground (to our knowledge).  And now the ARRL is
sponsoring the National Parks on the Air (NPOTA) event all year for both
the NPS exposure and for Ham Radio.

We want to do something special by doing it UNDERGROUND by returning to
Mammoth cave and setting up a special event.

See:  http://aprs.org/NPOTA-MammothCave.html

There are many ways to use HF or UHF or Packet to complete this event.  We
are just beginning to figure this out, but the above web page shows some of
the ideas.

We will need at least ten operators with a variety of technical hardware
depending on the tests we can do.  Here are the different modes we can do:

* Ten people with UHF HT's making contacts underground.
* Ten using D72 digipeating HT's to make APRS packet contacts like we did
in 2013
* Ten HT operators with handheld UHF beams trying to penetrate to topside?
* Ten mobile HF operators with good mobile antennas (possibly tilted if

We don't know when this will be, but it has to be finished by the end of
the calendar year.  I'm beginning to refresh my personel contacts with the
cave to see if they have some good event schedules.

Bob, WB4APR.
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