[aprssig] FM CW Balloon launch Annapolis Wed at 11 AM - SPLASH!

Robert Bruninga bruninga at usna.edu
Wed Apr 17 14:19:11 EDT 2013

Splash!  Worked perfectly but we overshot the island! Drats!

See the track: http://aprs.org/balloons.html

We did not calculate the slow descent of a small water bottle only weighing
80g even without a chute.  Only a 30’ streamer.  The  payload came down no
faster than it went up.  So even though the cut worked at the Burn
Longitude, the descent overshot the island.

Bob, WB4aPR

*From:* Robert Bruninga [mailto:bruninga at usna.edu]
*Sent:* Tuesday, April 16, 2013 9:51 PM
*To:* aprssig at tapr.org
*Subject:* FM CW Balloon launch Annapolis Wed at 11 AM

A small (2 party balloon) payload sending FM CW on 433.72 +/- MHz may be
heard within a few dozen miles of Annapolis Maryland around Noon on Wed.
It sends LAT/LON/ALT using a modified CW and a KeyFob 10mw FM transmitter.

The balloon will only go to 5000’ and wont have a range beyond 50 miles or

See details: http://aprs.org/balloons.html

You will see local APRS bulletins from the chase team, but You wont see the
position on APRS unless someone has time to take the decoded LAT/LON/ALT in
CW and enter them as an object.

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