ARLA/CLUSTER: Controle do AO-92 testou modo L (Transponder entre 1267 para 435 MHz FM)

[João Costa > CT1FBF]

AO-92 Commissioning: HERCI Experiment and L-Band Downshifter

AMSAT North America reports on the testing of the L-Band Downshifter
on the recently launched AO-92 CubeSat providing a 1267 to 435 MHz FM
transponder

The AMSAT Engineering and Operations teams have been hard at work
testing the various modes and experiments aboard AO-92 since its
launch on January 12th. Since the last update, testing has
concentrated on the University of Iowa’s High Energy CubeSat Radiation
Instrument (HERCI) experiment and the AMSAT L-Band Downshifter.

The HERCI experiment was activated for the first time on January 18,
2018. According to Don Kirchner, KDØL, Research Engineer at the
University of Iowa, “HERCI is intended to provide a mapping of
radiation in a low earth orbit. This is of scientific interest for
planning CubeSat test flights for low energy X-Ray detectors.”

The L-Band Downshifter converts signals received on 1267.350 MHz and
injects them into the satellite’s 435 MHz receiver. Due to the
increased path loss on 1267 MHz and the utilization of the satellite’s
435 MHz receive antenna on 1267 MHz, pre-launch estimates suggested
that around 100 watts ERP may be required for horizon to horizon
access in this mode. As always, pre-launch estimates are subject to
change after real-world testing in-orbit.

Read the full story at
https://www.amsat.org/ao-92-commissioning-update-herci-experiment-and-l-band-downshifter-tested/