[aprssig] APRS balloon launches during Dayton Hamvention

[Mark Conner]

We wanted a quiet frequency with no (known) regular terrestrial use.  Otherwise if we had a receiver on board it'd hear everything on 144.99 for 300-400 miles around which is somewhat commonly used for packet.  We used to use 144.34 on a regular basis but heard that ATV ops didn't want to hear packet on their calling frequency unless ATV was aboard.

We have done EBBE digipeating in the past, but at the time the two balloons were only a few miles apart (during the 2004 Great Plains Super Launch).  A QSO distance of 309 miles was achieved, not all that far since simple Earth-Balloon-Earth QSOs from conveniently-located mountaintops have more than doubled that distance since.

Frequencies still have not been finalized - keep watching www.arhab.org for updates (look for the NSTAR or NSS flight details).

73 de Mark N9XTN

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Message: 6
Date: Tue, 13 May 2008 14:36:07 -0400
From: "Joseph M. Durnal" <joseph.durnal at gmail.com>
Subject: Re: [aprssig] APRS balloon launches during Dayton Hamvention
To: "TAPR APRS Mailing List" <aprssig at lists.tapr.org>
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<1fbe50e80805131136n41371e88m4359fc300b29c387 at mail.gmail.com>
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It would be cool to do EBBE digipeating!

Why 144.36?  I would use 144.99 instead.  I guess it depends on the
local activity.

73 de Joseph Durnal NE3R