Blog (Page 32)

1240-1300 MHz discussed at CEPT SE 40 meeting

The 69th meeting of CEPT ECC Working Group SE-40, held June 23-25, discussed the amateur radio 1240-1300 MHz band, the meeting documents are now available.

Several contributions were received for the ECC Report dealing with the coexistence between the radionavigation-satellite service and the amateur service in the frequency band 1240 – 1300 MHz. The contributions were incorporated in the draft ECC Report. The CPG arrangements for the preparation of WRC-23 for AI 9.1 topic b) was noted.

The Russian Federation noted:
1240-1260 MHz is by the GLONASS system
1260-1300 MHz are used by EU’s Galileo, Beijing’s Beidou, Japan’s QZSS and is planned to be used by Korea’s KPS.

Among the documents available in Input, Info and Minutes are:
• SE40(20)052 Amateur Repeaters – IARU-R1
• SE40(20)051 Section 2 update WI_39 – IARU-R1
• SE40(20)050 Annex Draft report RNSS Amateur – Russian Federation
• SE40(20)049 Suggestions for RNSS and Amateur Service Compatibility – Russian Federation
• Info 1 Amateur repeaters 23 cm – IARU-R1
• Info 3 Letter to SE40 chairman on updated of ITU-R M.1092 – European Commission
• Minutes
• SE40(20)56A3 (1) Draft Report Amateur vs RNSS

Download the meeting documents from
https://www.cept.org/ecc/groups/ecc/wg-se/se-40/client/meeting-documents/?flid=27561

Get The Details…

m5aka

AMSAT-UK

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LunART- Lunar Amateur Radio Transponder

The European Space Agency (ESA) website has published a proposal by radio amateurs from AMSAT-DL for LunART (Lunar Amateur Radio Transponder): a Communications Platform on the Large European Lander to support communication and payload experiments.

Peter Gülzow DB2OS and Matthias Bopp DD1US say a LunART Communications Platform on the Large European Lander will support direct communication with earth through amateur radio frequencies in the microwave bands, support University and Student Payloads with direct access to their experiments, allow Radio Science for a huge community of radio amateur operators and scientists worldwide. It would also provide an important back-up communication capability and capacity during emergency or when ESA network is busy, for example during non-critical times.

Read the proposal at https://ideas.esa.int/servlet/hype/IMT?userAction=Browse&templateName=&documentId=81f70b2b01f6993c1b76fb6b572ee6c5

Get The Details…

m5aka

AMSAT-UK

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LO-94 Amateur Radio in Lunar Orbit

Longjiang-2 / LO-94 in Lunar Orbit

Nature carries an article about the spacecraft Longjiang-2 / Lunar-OSCAR 94 (LO-94), built by students at the Harbin Institute of Technology, that carried the first Amateur Radio communication system to operate in lunar orbit.

As a part of China’s Chang’e-4 lunar far side mission, two lunar microsatellites for low frequency radio astronomy, amateur radio and education, Longjiang-1 and Longjiang-2, were launched as secondary payloads on 20 May 2018 together with the Queqiao L2 relay satellite.

On 25 May, 2018, Longjiang-2 successfully inserted itself into a lunar elliptical orbit of 357 km × 13,704 km, and became the smallest spacecraft which entered lunar orbit with its own propulsion system. The satellite carried the first amateur radio communication system operating in lunar orbit, which is a VHF/UHF software defined radio (SDR) designed for operation with small ground stations.

This article describes and evaluates the design of the VHF/UHF radio and the waveforms used. Flight results of the VHF/UHF radio are also presented, including operation of the radio, performance analysis of downlink signals and the first lunar orbit UHF very-long-baseline interferometry (VLBI) experiment.

Read the article at https://www.nature.com/articles/s41467-020-17272-8

Cartoon movie – Longjiang-2 / LO-94: Journey to the Moon
https://amsat-uk.org/2020/06/06/longjiang-2-lo-94-journey-to-the-moon/

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m5aka

AMSAT-UK

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ISS Slow Scan TV for 45th Apollo-Soyuz anniversary

Artist’s impression of the docking of the Apollo and Soyuz spacecraft

ESA Education has released tutorial videos explaining how to make use of various computers and mobile devices to receive the International Space Station SSTV transmissions on 145.800 MHz FM that are expected for the 45th anniversary of the Apollo-Soyuz mission.

Apollo–Soyuz was the first international space mission, carried out jointly by the United States and the Soviet Union in mid-July 1975 and ESA Education say the anniversary will be marked by SSTV transmissions from the ISS.

See the collection of Tutorials videos on how to receive SSTV pictures from the International Space Station for specific operating systems such as Windows 10, Apple iOS & Mac OSX, Android, Raspberry Pi, etc at
https://www.esa.int/ESA_Multimedia/Sets/Radio_ISS/(result_type)/videos

YouTube Tutorials Playlist
https://www.youtube.com/watch?v=HtC-BPcMruA&list=PLbyvawxScNbt5Mjfty4Ik-Tt6du-6N5jD

ESA Education https://twitter.com/ESA__Education/status/1281140713237946370

Wiki Apollo-Soyuz https://en.wikipedia.org/wiki/Apollo%E2%80%93Soyuz

Read the Raspberry Pi article Pictures from space via ham radio
https://www.raspberrypi.org/magpi/pictures-from-space-via-ham-radio/

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

What is Amateur Radio? http://www.essexham.co.uk/what-is-amateur-radio

Free UK amateur radio online training course https://www.essexham.co.uk/train/foundation-online/

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m5aka

AMSAT-UK

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ESA promote amateur radio in ISS SSTV video

The ESA space agency has released a new video ‘How to get pictures from the International Space Station via Amateur Radio’.

Did you know that astronauts on the International Space Station send pictures from space to ground over amateur radio that you yourself can get at home using your computer? ESA show you how to get them, step by step.

The video features radio amateur David Honess 2E0XDO (ex-M6DNT).

Watch How to get pictures from the International Space Station via amateur radio

Read the Raspberry Pi article Pictures from space via ham radio
https://www.raspberrypi.org/magpi/pictures-from-space-via-ham-radio/

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

What is Amateur Radio? http://www.essexham.co.uk/what-is-amateur-radio

Free UK amateur radio online training course https://www.essexham.co.uk/train/foundation-online/

Get The Details…

m5aka

AMSAT-UK

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