Video of EIRSAT-1 talk

Some of the EIRSAT-1 Team

Some of the EIRSAT-1 Team

The EIRSAT-1 CubeSat, built by students at University College Dublin, is due for launch on the Vega rocket in early 2021 and you can help!

The South Dublin Radio Club was honored to host a talk by David Murphy EI9HWB and Fergal Marshall of the EIRSAT-1 team. In this video, they give a comprehensive technical run-through of the satellite’s payload, subsystems and onboard communications.

From an amateur radio and hobbyist point-of-view, there is a full run-through of the uplink and downlink schemes including detailed flow charts (including demodulation and decoding). For details go to 14:30

This followed by a detailed proposal as to how amateur radio operators can contribute to ground station operations via SatNOGs and gr_satellites GNU Radio. For details go to 34:05

EIRSAT-1 particularly wants help with signal acquisition just after launch… the riskiest part of the mission. They want help from amateur radio operators, listeners, scanners, makers, etc… to expand the mission’s ground segment.  For details go to 39:50

There is then a very informative Q&A.

Watch You can help Ireland’s first satellite, EIRSAT-1!

EIRSAT-1 – 437.100 MHz
https://www.eirsat1.ie/
https://twitter.com/eirsat1

South Dublin Radio Club https://twitter.com/SDRadioClub

FCC Deletes 3.4 GHz Amateur Satellite Service Allocation

FCC SealThe AMSAT News Service (ANS) reports that at its open meeting on September 30, 2020, the Federal Communications Commission (FCC) adopted a Report and Order that sunsets Amateur use of the 3.3-3.5 GHz band.

This spectrum includes the 3.40-3.41 GHz Amateur-Satellite Service allocation. AMSAT had previously filed comments opposing the FCC’s proposal to delete this spectrum.

The adopted FCC Report and Order can be found at
https://www.fcc.gov/document/fcc-seeks-facilitate-5g-345-355-ghz-band-0

AMSAT filing https://www.amsat.org/wordpress/wp-content/uploads/2020/02/Comments-of-Radio-Amateur-Satellite-Corporation-WT-Docket-No-19-348.pdf

ISS SSTV October 4-8 on 145.800 MHz FM

ISS SSTV image 5 received by Dave Boult G7HCE in Exeter on April 14, 2019

ISS SSTV image 5 received by Dave Boult G7HCE in Exeter on April 14, 2019

An ARISS Slow Scan TV (SSTV) event is scheduled from the International Space Station (ISS) for October 4-8.

Update: Transmissions commenced on October 3.

The event is scheduled to begin on October 4 at 14:00 GMT for setup and operation and continue until October 8 ending at 19:15 GMT. Dates and times subject to change due to ISS operational adjustments.

Images will be downlinked at 145.800 MHz FM +/- 3 kHz for Doppler shift and the expected SSTV mode of operation is PD 120. The main theme of this collection of images will be Satellites.

Radio enthusiasts participating in the event can post and view images on the ARISS SSTV Gallery at https://www.spaceflightsoftware.com/ARISS_SSTV/

After your image is posted at the gallery, you can acquire a special award by linking to https://ariss.pzk.org.pl/sstv/ and following directions for submitting a digital copy of your received image.

ARISS SSTV Blog http://ariss-sstv.blogspot.com/

If your radio has selectable FM filters then for best results select the wider filter designed for 25 kHz channel spacing.

ISS SSTV info and links https://amsat-uk.org/beginners/iss-sstv