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2023-11-19
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EISAT-1 CubeSat
2023-11-07
EISAT-1 CubeSat
EIRSAT-1 and CubeSat Deployer
EIRSAT-1 is expected to launch on a Space X Falcon 9 rocket from the Vandenberg Air Force Base in California, USA, on November 29, 2023. It will have a downlink on the IARU coordinated frequency of 437.100 MHz, see https://iaru.amsat-uk.org/finished_detail.php?serialnum=639
EIRSAT-1 was built by students from University College Dublin under the framework of ESA Academy’s Fly Your Satellite! programme (FYS) – a fully hands-on initiative supporting university student teams in the development of their own satellites.
Lead by students from the UCD School of Physics and the UCD College of Engineering, the project began in 2017 when the team’s proposal to build a CubeSat to perform gamma ray astronomy was accepted as part of the 2nd cycle of FYS.
The 2-unit CubeSat carries three experiments – or ‘payloads’. The primary science payload GMOD is a gamma ray detector that will study the most luminous explosions in the universe, gamma ray bursts. Secondary payloads include a thermal coating study that will assess the performance of surface treatments for satellites as well as an alternative system for controlling spacecraft orientation.
Source ESA article https://www.esa.int/Education/CubeSats_-_Fly_Your_Satellite/Ireland_s_first_satellite_on_its_way_to_launch
Follow the EIRSAT-1 team on X at https://twitter.com/EIRSAT1
EIRSAT-1 website https://www.eirsat1.ie/
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23cm band report ITU‑R M.2532 published
2023-11-05
23cm band report ITU‑R M.2532 published
IARU Region 1 reports as a part of the preparatory process for WRC-23 agenda item 9.1 topic b) involving the 23cm band (1240-1300 MHz), ITU‑R Report M.2532 has been published.
This report encapsulates the outcome of resolves 1 of ITU‑R Resolution 774 that requires a detailed review of the different systems and applications used by the amateur and amateur satellite services in the 23cm band. The review forms a part of the basis for the studies required by resolves 2 to address the amateur and amateur satellite services coexistence with the radio navigation satellite service (RNSS).
The publication represents a positive outcome from a great deal of work and committment by the IARU volunteer team that has been central to its development since 2019 in ITU‑R Study Group 5.
Download ITU‑R Report M.2532 https://www.iaru-r1.org/wp-content/uploads/2023/11/R-REP-M.2532-2023-PDF-E.pdf
The information paper ZL23_C5_19 1.3 GHz Band – Additional Information was submitted by the RSGB to the IARU Region 1 Conference held Novemebr 1-4, 2023. It provides information on the situation in the 1240-1300 MHz and 13001350 MHz spectrum. It can be downloaded from ZL23_C5_19 1300MHz INFO
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Delfi-C3 – DO64 Deorbiting Soon
2023-11-03
Delfi-C3 – DO64 Deorbiting Soon
Delfi-C3 Team at AMSAT-UK Colloquium 2008
After more than 15 years in orbit, Delfi-C3’s mission is about to come to an end. The team predict that re-entry will take place around November 16th 2023.
The re-entry date might vary depending on the solar activity, which is very hard to predict accurately. See also @Marco_Langbroek on Twitter for a similar prediction.
https://twitter.com/Marco_Langbroek/status/1720110996499349663
Delfi-C3 Re-entry Prediction
We would like to request all amateur radio operators / SWL’s / satellite enthusiasts worldwide to listen for Delfi-C3’s telemetry downlink on 145.867 MHz, 1200 baud AX.25 BPSK. We will hand out an award certificate to the person submitting the last Delfi-C3 telemetry frame.
This can be done either through the RASCAL software (updated version coming…), through the SATNOGS network or by sending us decoded telemetry frames with reception time and location via email to Delfi_at_tudelft.nl.
On behalf of the entire Delfi-C3 team, we would like to sincerely thank the worldwide amateur radio / SWL / satellite community for assisting the team by forwarding received telemetry and reception reports.
Back in 2008 we could not imagine the great support received so far and the many first we had, including a successful ground network and flying the first linear transponder in a CubeSat.
We strongly believe that Delfi-C3 has paved the way for many follow-on missions (both amateur and commercial), and has been a great step towards maturing CubeSat technology as well as training the next generation of space engineers. Stay tuned for updates!
On behalf of the team best 73s,
Wouter PA3WEG
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ISS SSTV Verification Test – Oct 27-Nov 1
2023-10-25
ISS SSTV Verification Test – Oct 27-Nov 1
ISS SSTV image 5/12 received by Murray Hely ZL3MH January 31, 2015
The SSTV system in the Service Module will be activated to attempt to verify a replacement piece of hardware during the period of Oct 27 until Nov 01.
The system will be off around the required period of no transmissions during the planned EVA on Oct 31. Images will be transmitted on 145.800 MHz and in the typical PD120 format.
There are 2 windows for testing, separated by an EVA:
Fri Oct 27 at 12:15 GMT – Sun Oct 29 at 18:50 GMT
Tue Oct 31 at 10:05 GMT – Wed Nov 01 at 18:10 GMT
Your images can be posted to the Gallery at https://www.spaceflightsoftware.com/ARISS_SSTV/index.php
Since this is a test of replacement components of the system, there still may be unexpected outages or issues.
The signal should be receivable on a handheld with a 1/4 wave whip. If your rig has selectable FM filters try the wider filter for 25 kHz channel spacing.
You can get predictions for the ISS pass times at https://www.amsat.org/track/
ARISS SSTV Blog https://ariss-sstv.blogspot.com/
Useful SSTV info and links https://amsat-uk.org/beginners/iss-sstv/
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