[aprssig] [APRS] APRS in caves!

Robert Bruninga bruninga at usna.edu
Fri Nov 16 16:55:09 EST 2012

> Just out of curiosity, how would the individual stations
> get their own position fix data inside the cave?

Texting is the goal.  But position reporting is important too.

> Are the cave maps good enough to get precision lat/lon for manual entry?

Two answers to that.

1) We hope to get a geomertrically correct cave map before we commence the
project.  Then APRS.FI and all other APRS systems as is can see us.

2) Failing that, then ANY map, even hand drawn with its own grid will do,
as long as EVERYONE is using the same map.  This is harder these days as
every APRS client has a different way of accompdating such maps.

So yes, our goal is to get a map that is geographically correct.  Then we
can manually enter our position based on where we think we are.

So far, I have not found such a map.


Andrew Pavlin, KA2DDO
(Looking for an excuse for a roadtrip)
------Original Message------
From: Bob Burns W9RXR
To: APRS at yahoogroups.com
Cc: aprssig at tapr.org
Cc: aprs at yahoogroups.com
Sent: Nov 16, 2012 4:40 PM
Subject: Re: [aprssig] [APRS] APRS in caves!

At 02:34 PM 11/16/2012, Robert Bruninga wrote:

>I'd be happy to put together a proposal if we thought we could get 8
>to 15 people to converge on Mammoth Cave Kentucky some weekend with
>their TH-D72s.

I'm about 4 hours away, but would be interested in participating. I
have a TH-D72, a VX-8GR, and a spare TM-D710 that could be operated
on battery power. It's been about 20 years since I've been in Mammoth

>..  Lemme see if there are any nearby BIG hamfests during the
>year.  (Nashville or Louisville).

The Greater Louisville Hamfest is usually the first Saturday after Labor


I think there may also be a hamfest at Bowling Green.


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