feb 17 2020
Den 13/2 2020 fick jag möjlighet att hålla föredrag om satelliter och amatörradio hos Västerås Sändaramatörer SK5AA. Ca. 30 besökare hade dykt upp och det ställdes en del bra frågor.
Tack till alla som kom!
73 Lars SM0TGU
feb 16 2020
AO-85 (Oscar 85) är numera förklarad som icke fungerande, batterierna verkar ha slutat fungera //Lars SM0TGU
AMSAT-OSCAR 85 Declared End of Mission
After a long decline in the health of its batteries, AO-85 has gone
silent. Having not been heard throughout the most recent period of
full illumination, it is reasonable to believe the batteries have
deteriorated to the point of no longer being able to power the trans-
mitter. Should some future event cause a cell to open, it is possible
the satellite may be heard again, but for now it is time to declare
AO-85 was conceived as the first AMSAT cubesat, and was designed to be
a successor to the popular AO-51 microsat. Accepted into the NASA
CubeSat Launch Initative in February 2012, AO-85 was launched October
8, 2015. AO-85’s success led to further Fox satellites AO-91, AO-92,
AO-95, and RadFxSat2 / Fox-1E which will be launched later this year.
The Fox-1E transponder was also spun off into a radio system now in
orbitonboard HuskySat-1, and soon to be in several other university
Development continues on GOLF-TEE and GOLF-1, which will include a
legacy V/u linear transponder and a SDR-based multiband uplink and 10
GHz downlink radio system. Your continued support of AMSAT by member-
ship and donations will help us Keep Amateur Radio in Space.
[ANS thanks Drew Glasbrenner, KO4MA, AMSAT Vice President – Operations
for the above information]
jan 28 2020
Info from ANS: The University of Washington’s HuskySat-1 3U cubesat was launched on the Northrop Grumman NG-12 Cygnus supply mission to the ISS on November 2. HuskySat-1 has remained stowed aboard Cygnus scheduled for deployment after the cargo ship unberths from the International Space Station. Unberthing is scheduled for 1435 UTC (9:35 am EST) on Jan 31 and will be covered live on NASA TV.
Within 24 hours after departure from the ISS, HuskySat-1 and SwampSat will be deployed into orbit. After deployment, HuskySat-1’s 1,200 bps BPSK beacon on 435.800 MHz should be active and decodable with the latest release of AMSAT’s FoxTelem software. HuskySat-1 is expected to run its primary mission before being turned over to AMSAT for amateur radio operation. HuskySat-1 features a 30 kHz wide 145 to 435 MHz linear transponder for SSB/CW.
Uplink: 145.910 – 145.940 MHz LSB/CW
Downlink: 435.840 – 435.810 MHz USB/CW (inverting)
Telemetry: 435.800 MHz 1K2 bps BPSK
24049.00 MHz (U of Washington experimental downlink)
The latest version of FoxTelem software to decode the 1200 bps BPSK beacon is available at: https://www.amsat.org/tlm
The Fox-In-A-Box FoxTelem software has been updated for HuskySat-1 Operation at it’s download website: http://burnsfisher.com/AMSAT/FoxInABox
This release now contains the SD card image, FIAB-distro8-V1.08w.zip. This file, when unzipped and written to a 16Gb SD card will give you the latest software for FoxTelem and will run on a Raspberry Pi 4. This is an image of the same SD card that has been shipping from the AMSAT store for several weeks. (It should work on an 8Gb card as well with less room to spare of course).
Version 1.08w has a few fixes from the previous 1.08r which was the previous download version. Improvements to the decoder will capture data a bit better. Remember that the later 1.08 versions (including r and w) know how to switch bands between listening on VHF and UHF based on which of Fox and Husky satellites are overhead at the time.
(Fox-In-A-Box information thanks to Burns Fisher, WB1FJ)
The linear transponder and telemetry system carried aboard Fox-1E was designed for use in different CubeSats by merely adding an interface adapter for connection to the host bus. Noting the prevalence of CubeSats built and launched by universities and other organizations, AMSAT adopted a goal of “amateur radio in every CubeSat.” Interested CubeSat programs wanting to fly an amateur radio payload may partner with AMSAT to carry one of these modules on their spacecraft. By providing amateur radio capability, the CubeSat program gets a worldwide ground station network to receive their telemetry and experiment data while the amateur radio community gets a transponder to use in orbit.
Additional information is posted on the University of Washington Husky Satellite Lab pages:
[ANS thanks the HuskySat-1 Team, AMSAT Engineering, AMSAT Operations, the Fox Telemetry Team, and NASA for the above information]