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ISS GETS ANOTHER ANTENNA



SUBMITTED BY ARTHUR Z. ROWE - N1ORC

COPIED FROM:
***************
The ARRL Letter
Vol. 21, No. 04
January 25, 2002
***************
==>NEW HF AMATEUR RADIO ANTENNA INSTALLED ON ISS

Amateur Radio on the International Space Station gained a new HF antenna
January 25--although there's no HF gear aboard the ISS as yet. The
antenna--the second of four slated for installation aboard the Service
Module--was put into place during a spacewalk--or EVA--conducted by
Expedition 4 Crew Commander Yuri Onufrienko, RK3DUO, and astronaut Dan
Bursch, KD5PNU.

The antenna is a flexible-tape design--similar to, but longer than, a
VHF-UHF antenna installed during a January 14 EVA by Onufrienko and
astronaut Carl Walz, KC5TIE. ARISS Board Chairman Frank Bauer, KA3HDO,
said
the antenna would be installed at the end of the Service Module in the 2
o'clock position (6 o'clock is pointing toward Earth). 

The HF antenna is a 2.5-meter (8.2-foot) long flexible tape. Bauer thinks
it
will definitely work on 10 meters and speculated that it might work on 15
or
20 too. Bauer added that he did not know when HF gear would be
transported
to the ISS nor when it might be made available for use by a future crew. 

The EVA lasted several hours and also involved attaching six thruster
plume
deflectors on the ISS as well as the ham antenna work. Installation
involved
not only the mechanical deployment of the antenna but routing cables,
establishing the RF connection and even photographic documentation. 

A paper entitled "2001: an Amateur Radio Space Odyssey on the
International
Space Station," which details the development of ARISS and discusses the
four new ARISS antennas is available via the ARISS Web site
<http://ariss.gsfc.nasa.gov/EVAs/amsat01.pdf>.

The Expedition 4 crew is tentatively scheduled to speak with students at
Butte High School in Montana the week of January 28. The contact was
being
arranged either via Tony Hutchison, VK5ZAI, in South Australia or via
WH6PN
at Sacred Hearts Academy in Honolulu.

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