ARLA/CLUSTER: Uma "antenazinha" para tentar uns contactos via rebote lunar em 23 cm

[João Costa > CT1FBF]

Commemorative EME transmission from dish on 'Project Diana' site

Radio amateurs will attempt a 23 centimeter Earth-Moon-Earth (EME, or
"moonbounce") transmission on January 10, using the 60-foot-diameter TLM-18
dish on the former "Project Diana" site, now part of the InfoAge
http://www.infoage.org/ Science History Museum in New Jersey.

This month's event marks the 70th anniversary of Project Diana. It was on
the InfoAge site, then a part of Fort Monmouth, that the US Army's Project
Diana team on January 10, 1946, first received radio signals bounced from
the moon.

During the anniversary event, the TLM-18 reactivation team, consisting of
volunteers from the museum, the *Ocean Monmouth Amateur Radio Club* (OMARC
http://www.n2mo.org/), and *Princeton University*, will transmit from the
TLM-18 control console in Building 9162, the original TIROS control
building, adjacent to Building 9116, which houses N2MO, the OMARC club
station.

The dish offers 35 dBi gain at 465 MHz. The former US Army tracking dish
was used as a ground station for the TIROS I and II weather satellites and
for Project Vanguard, which led to the launch of Vanguard 1, the second US
satellite, in 1958. The dish was demilitarized in the 1970s.

An impromptu pre-event EME test conducted on January 2 on 1296 MHz from the
TLM-18 dish was successful, and the N2MO operators completed a contact with
K2UYH.

Daniel Marlow, K2QM, an InfoAge board member who teaches physics at
Princeton, plans to use the dish as a radio telescope to see 21 centimeter
radiation from the Milky Way, but he also wants to observe radio pulsars,
and because that activity can be performed at 70 centimeters, the TLM-18
dish is being made available to the Amateur Radio community for EME use on
a secondary basis.
Thanks to InfoAge and Martin Flynn, W2RWJ

Fonte: The ARRL Letter
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