ARLA/CLUSTER: Adiado o lançamento do CubeSat adFxSat/Fox-1B

[João Costa > CT1FBF]

AMSAT RadFxSat/Fox-1B launch delay

United Launch Alliance (ULA) announced on November 6 that the launch of the
Delta II rocket carrying *RadFxSat* has been delayed due to a faulty
battery on the booster. The launch is now scheduled for Tuesday, November
14th at 09:47 UTC. NASA TV coverage begins at 09:15 UTC.

Web streaming will be available on www.nasa.gov/ntv - launches are also
often streamed at http://www.ulalaunch.com and spaceflightnow.com
<http://www.spaceflightnow.com/>

Continue reading for what you can expect after the launch and how you can
help ...

*INTRODUCTION*

RadFxSat is a partnership with Vanderbilt University ISDE and hosts four
payloads for the study of radiation effects on commercial off the shelf
components. RadFxSat features the Fox-1 style FM U/v repeater with an
uplink on 435.250 MHz (67.0 Hz CTCSS) and a downlink on 145.960 MHz.
Satellite and experiment telemetry will be downlinked via the "DUV"
subaudible telemetry stream and can be decoded with the FoxTelem software:
https://www.amsat.org/foxtelem-software-for-windows-mac-linux/ .

*LAUNCH AND EARLY ORBIT PHASE (LEOP)*

At this time, pre-launch Keplerian elements are not expected to be
available. However, based on the Local Time of the Ascending Node
(LTAN) of the primary payload, 13:30, stations should expect to have their
initial ascending passes starting around noon local time.

The estimated time of "First Veronica," the initial beacon after
deployment, is 12:07 UTC. Due to the tight constraints on the primary
payload deployment, the secondary payloads may be delayed slightly, so this
should be considered the soonest the transmitter will be enabled.

Orbital elements will be published as soon as they are available on the
AMSAT website. Stations in Europe, South America, and North America should
point your beams south and have FoxTelem running while awaiting the initial
post-launch Keplerian elements.

Participation in telemetry collection by as many stations in as many parts
of the world as possible is essential as AMSAT Engineering looks for
successful startup and indications of the general health and function of
the satellite as it begins to acclimate to space.

If you are capturing telemetry with FoxTelem please be sure that "Upload to
Server" is checked in your settings, and that your "Ground Station Params"
are filled in as well. You can help AMSAT and everyone waiting to get on
the air with RadFxSat tremendously by capturing RadFxSat telemetry.

About 60 minutes after deployment, or 140 minutes after launch, the
satellite will start up in Beacon Mode. In this initial mode, the
transmitter is limited to 10 seconds on time and then will be off for two
minutes. For those of you capturing telemetry, that means that you will
only see Current frames and no High or Low frames. The High and Low frames
are truncated as it takes just over the 10 second limit to send two frames.
Veronica may also be cut off before she gets to say her whole ID string as
the full ID, "RadFxSat Fox-1B Safe Mode," is a bit longer than the
approximately 3.5 seconds she has in Beacon Mode.
If the voice ID is cut off, the satellite is still in Beacon Mode.

If AMSAT Engineering is seeing nominal values from the telemetry you
gather, the satellite will be commanded from Beacon Mode to Safe Mode on
the first good pass over the United States. In Safe Mode, the satellite
transmits a full two frames of telemetry (one Current frame followed by,
and alternating each ID cycle, a High or a Low frame).
Veronica now has time to make the whole ID announcement in Safe Mode.

The on-orbit checkout procedure for RadFxSat is similar to Fox-1A/AO-85 and
could be completed in as little as a few days if users cooperate. It is
very important, and good amateur operating practice, to refrain from using
the transponder uplink so the on-orbit tests can be performed, including
when the satellite is switched into Transponder Mode for testing.

AMSAT will make it broadly known when the tests are complete and the
transponder is available for all to use. If you hear someone on the
transponder, please do not assume that it is open for general use - check
AMSAT's website, Facebook, and Twitter before transmitting to be sure you
do not interfere with testing.

AMSAT asks all satellite operators to contribute just a little bit of your
time by gathering telemetry, not using the transponder uplink, to help
complete the last few days of getting RadFxSat operating for the amateur
radio community.

Lots of hams put thousands of volunteer hours of their time into making
RadFxSat happen. Just like any ham radio project you might undertake, AMSAT
builds satellites. AMSAT volunteers do it because they like to, and when
they are done, AMSAT freely shares their project with hams everywhere as is
the spirit of amateur radio.

Thank you very much and see you on the bird!

*RADIO PROGRAMMING CHART*

RadFxSat (Fox-1B) Doppler Shift Correction

Memory 1 (AOS) - TX 435.240 MHz (67.0 Hz Tone), RX 145.960 MHz Memory 2
(Rise) - TX 435.245 MHz (67.0 Hz Tone), RX 145.960 MHz Memory 3 (TCA) - TX
435.250 MHz (67.0 Hz Tone), RX 145.960 MHz Memory 4 (Descend) - TX 435.255
MHz (67.0 Hz Tone), RX 145.960 MHz Memory 5 (LOS) - TX 435.260 MHz (67.0 Hz
Tone), RX 145.960 MHz

Frequencies are subject to change post-launch.

Thanks to AMSAT Vice-President Engineering, *Jerry Buxton, NØJY*, and ANS
for the above information

http://www.amsat.org
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