[amsat-bb] ANSR-37 balloon launch on 14 April 2007

Patrick STODDARD (WD9EWK/VA7EWK) amsat-bb at wd9ewk.net
Wed Apr 11 11:17:34 PDT 2007


Here is an announcement from Arizona Near Space Research (ANSR),
about an upcoming balloon launch.  Along with the various payloads
on this flight, there will be a 2m/70cm cross-band repeater that
functions very similar to those on FM satellites.  Launch site has
not been determined yet, but this group usually launches from sites
in the southern part of metropolitan Phoenix or in central Arizona
between Phoenix and Tucson.

The cross-band repeater, when in flight, can cover hundreds of
miles/km.  Stations in Arizona along with portions of neighboring
states (Nevada, California, Utah, New Mexico) and some parts of
northwest Mexico (northern Baja California, northern Sonora,
northwestern Chihuahua) are workable.  You may see coverage
maps of a typical ANSR balloon flight at:


Unlike with the FM satellites, there is no Doppler effect to deal
with on these balloon flights.  This could be a good way to get
ready for working FM satellites, or testing a station that has
already been used to work those satellites.

Good luck and 73!

Patrick WD9EWK/VA7EWK - Phoenix AZ

(ANSR-37 launch announcement follows)

Arizona Near Space Research (ANSR) is pleased to announce the
flight of ANSR-37. This high altitude balloon flight will take
place on Saturday, April 14th at 9:00 A.M. (1600 UTC).

The launch site is to be determined depending on the predicted
winds aloft. Follow up announcements will designate and expand
launch site information as the flight date nears.

The balloon will be a 3000-gram weather balloon, filled with
helium. The expected burst altitude will be 90,000 feet or more.
The flight is anticipated to last about 2.5 hours from launch to

In addition to the ANSR standard payloads, this flight will
feature four payloads designed and built by University from
across Arizona. Participating schools include Northern Arizona
University (NAU), Embry Riddle Aeronautical University (ERAU),
Arizona State University (ASU) and the University of Arizona (UA).
This flight is the second ASCEND! flight of the school year and is
sponsored by the Arizona Space Grant Consortium. ANSR thanks AZ
Space Grant for another opportunity to fulfill our mission:
Promoting Science and Education Through Amateur Radio and High
Altitude Balloons.

The ANSR Cross-band repeater will be aboard this flight. Stations,
especially those distant from the balloon, are invited to use the
repeater when the repeater is not in use by the chase and recovery
team. Feel free to use the Yahoogroups Ballooning site:


to coordinate dx schedules. Peak altitude should be about 10:30 to
10:50 A.M. MST (1730-1750 UTC).

The following is the payload frequency plan:

APRS Beacon

445.950 MHz packet at 5, 25, 35, 55 seconds UTC time via KD7LMO-11

Cross Band NB-FM Voice Repeater

Input: 145.560 MHz/162.2 Hz PL tone
Output: 445.525 MHz Linked to IRLP Node 9255

APRS when repeater not in use on 445.950 MHz at 10, 20, 40, and 50
seconds UTC time via KD7LMO-11

Landing prediction after burst at 15 and 45 seconds UTC time via

Pico Beacon APRS

445.950 MHz packet at 0, 30 seconds UTC time via KD7LMO-11

Our mobile cross band Digipeater will repeat the APRS data to the
144.390 MHz standard APRS frequency and thus will be I-GATED to the
Internet for out of area trackers. You can track the flight using
either of the following links:



Be sure to check this site for updates to this announcement prior
to the flight.

Jack Crabtree, W7JLC
ANSR/AZ Space Grant Liaison

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