Altitude Balloon Carrying Amateur Television - 3
HABCAT - 3 On LARG Flight 2004A August
Conducted By The Balloon Committee of the Loudoun Amateur Radio Group of
Monitoring and Tracking Site
Operating From the G.R. Thompson
Wildlife Management Area
Reported and Photographed by Denny and Carol Boehler - KF4TJI
and KF4TJJ - Edited By Norm Styer - AI2C
Monitoring and Tracking Station
Tom Dawson - WB3AKD
established a monitoring and recording site at the G.R. Thompson Wildlife
Management Area near Sky Meadows. Denny - KF4TJI and Carol - KF4TJJ Boehler
also established their tracking site there and assisted Tom in assembling
Besides operating on
the Tracking Net on 147.300 MHz WA4TSC Repeater, Tom ran monitoring receivers
on both the 433 MHz video payload and on the 145.650 MHz beacon / telemetry
payload. See recorded
data. He used a elevation and azimuth rotor to point separate
multi-element arrays. His VCR, video monitor and
other equipment were powered by a portable gasoline powered AC generator.
Tom reported experiencing
poor reception quality while the flight was near or overhead. He suspects
it was because of the payload antenna nulls. Luckily, others were monitoring
the telemetry and later provided fill.
Denny and Carol Boehler's tracking system included
a W9VUU nulling antenna.
After touchdown, both
mobile units joined in on the search.
Tom Dawson - WB3AKD Controls Monitoring Antennas During Flight