Karl Meinzer DJ4ZC made DARC honorary member

Prof. Dr. Karl Meinzer DJ4ZC circa 1984 - Credit AMSAT-DL

Prof. Dr. Karl Meinzer DJ4ZC circa 1984 – Credit AMSAT-DL

Former AMSAT-DL President Prof. Dr. Karl Meinzer, DJ4ZC, who was first licensed in 1957 aged 17, has been named a new DARC honorary member. He was awarded the AMSAT-UK G3AAJ Trophy in 2000.

A translation of the DARC post reads:

This was announced by DARC chairman Christian Entsfellner, DL3MBG, at the virtual conference of the amateur council – in replacement of the canceled general meeting – on November 13th. Meinzer developed an enthusiasm for amateur radio at a young age. At the age of 17 he obtained his amateur radio license in 1957.

He passed the Abitur [educational qualification] along with a degree in physics and graduated with a doctorate. He spent his professional life at the University of Marburg, especially in the development laboratory for electronics until his retirement in 2005. The rooms of the ZEL were also the headquarters of the AMSAT-DL. Numerous OSCAR satellites were created in the laboratories in Marburg: AO-10, AO-13, AO-21, AO-40. Phase 3E is de facto finished, but is still waiting for a suitable start. A special operating system works in all satellites built by AMSAT-DL, on which Meinzer played a key role.

Meinzer doesn’t skimp on sharing his expertise and so he is still in close contact with the board of AMSAT-DL today. It is not surprising that DJ4ZC was one of the first radio amateurs to work on QO-100.

In addition, Prof. Dr. Karl Meinzer carried out further technical radio tests. He was obsessed with testing whether radio signals could be reflected off the planet Venus. In fact, he succeeded in doing this with 5 kW at 2.4 GHz, including a water-cooled magnetron. He had a special permit from the Federal Network Agency [BNetzA] specifically for these experiments.

But even in earlier years he achieved amazing things: In 1964 he set a course record of 70 cm between his home town of Iserlohn and Switzerland. And even then he was QRV on 433 MHz EME and contacted Puerto Rico. “He is one of the few old-timers who keeps pace with modern technology,” explains Christian Entsfellner, DL3MBG.

“There are only three Keplerian laws, everything can be done in them,” said Meinzer once, according to DL3MBG. “Unfortunately, he is reluctant to present his skills, but the AMSAT board always likes to refer to his expertise,” said the DARC chairman, who later wishes him a happy 82nd birthday.

“The DARC has unanimously decided to award you honorary membership for your services. I am happy to welcome you as a new honorary member, ” concluded DL3MBG.

DJ4ZC expressed his thanks. “My life has always been shaped by amateur radio. Some of the services were only made possible by other people, ”explains Meinzer. “I hope to continue to contribute something for amateur radio and DARC in the future.

Unfortunately, communication behavior in society has changed. So it’s a challenge for the DARC. However, I have the hope that technology will gain more importance again. Ultimately, amateur radio has to prove that it is useful for society,” said Prof. Dr. Meinzer in conclusion.

Source DARC https://darc.de/

ITU-R: 23cm ham radio band and Sat-Nav Coexistence

Galileo LogoDuring the period October 20-29, 2021, the IARU continued to engage in the preparatory work for WRC-23 agenda item 9.1b in ITU‑R Working Party 4C (WP4C).

The IARU Region 1 reports says:

The working party is considering simulations provided by two administrations to estimate the interfered area that might exist around a 23cm band amateur service transmitter. A number of amateur station configurations are under consideration identified as “Home Station 1”, “Home Station 2” and “Permanent Station” (e.g. Repeater station) based on characteristics developed and contributed by the IARU. Both narrowband and wideband emissions are considered. Two further scenarios are included in which “Home Station 1” operates with antenna uptilt as an amateur satellite uplink station and in which “Home Station 2” operates with antenna uptilt as an E‑M-E station.

The IARU representatives contributed to an off-line email discussion to ensure the amateur station parameters used are more representative than those that had been proposed in the original contribution papers. The studies were revised based on these negotiations during the meeting and are reflected in the draft working document. The interim results show interference distances of up to several km depending on the antenna and power level assumed. Work on these studies will continue into the next meeting.

Other measurements campaigns are investigating the effect of offsetting the transmission frequency of various amateur signals with respect to the centre frequency of the RNSS signal and the impact of the RNSS receiver bandwidth.

The IARU is working to ensure the amateur services are realistically represented in the studies as they move forward and remain consistent with the information developed in WP5A. It remains vital that national amateur communities present their views on the importance of this band to their national regulators in a consolidated and consistent manner.

The work on this topic will continue throughout the year both in ITU‑R and in the regional telecommunications organisations and the IARU is committed to ensure every group hears the amateur position on this important microwave band.

The summary report from the WP4C meeting can be found here

Click to access Report-from-WP4C_Oct-2021.pdf

The parallel work in CEPT SE40 is tracking the activity in the ITU‑R and is at a similar stage of development. This is also within the purview of the R1 SRLC.

Source IARU Region 1 https://iaru-r1.org/

Video of AMSAT-UK Space Colloquium talks

A video of the talks given at the 36th annual AMSAT-UK Space Colloquium on October 24, 2021, is now available on YouTube.

Timestamps
00:00:00 Stream starts
00:08:00 Official opening by Martin Sweeting, G3YJO
00:19:38 IARU Amateur Satellite co-ordination. Hans Blondeel Timmerman, PB2T
00:51:12 AMSAT-DL. Peter Guelzow, DB2OS
02:19:53 AMSAT North America. Robert Bankston, KE4AL President
02:49:37 STAR-XL: AMSAT-UK Payload – An updated OBDH for Nanosats. Phil Bladen, Sam Lane, Chris Bridges
03:26:53 STAR-XL: X-Band Upconverter & Dual Band L/X Patch Antenna for Space. Patrick Hope, Marcel Friesch, Chris Bridges
04:04:40 QO-100 using a SkyQ Dish. Iain Young, G7III
04:15:47 B2Space. David Johnson, G4DPZ
04:45:25 Satellite Operating from 57° North. Peter Goodhall, 2M0SQL
05:11:26 Announcement of G3AAJ Trophy by Martin Sweeting, G3YJO

Watch 2021 AMSAT-UK Space Colloquium

AMSAT-EA developing URESAT-1 satellite

AMSAT-EA LogoAMSAT-EA is already working on the mission of what will be the first satellite of URE (Spain’s national amateur radio society), URESAT-1.

A translation of post by URE says:

At the IberRadio Fair, held in September, the possible functionalities that this satellite could implement were shown.

Details of the evolutions planned for the URESAT satellite are based on the experience of the previous GENESIS missions, with the GENESIS-N and GENESIS-L satellites, launched into space with Firefly on September 3 (although, they failed to reach orbit due to failure of the thruster), and EASAT-2 and Hades, which will launch with SpaceX on January 10 from Cape Canaveral.

Although the final functionalities must be approved by the URE itself, it is expected that said satellite will incorporate an FM voice repeater, FSK transmissions and some type of on-board experiment, which could be a camera with SSDV transmissions or some type of propellant.

If the necessary financing is obtained, it is expected that this satellite could be sent into space by the end of 2022.

Source URE https://tinyurl.com/IARU-Spain

Japanese radio amateurs ask for reports of Z-Sat

Z-Sat - image credit JAXA

Z-Sat – image credit JAXA

Yasutaka Narusawa JR2XEA of the Komaki Amateur SATCOM Club reports the satellite Z-Sat is now planned to launch on an Epsilon rocket at 00:51:21-00:55:16 GMT on Thursday, October 7. It will be sending CW on 145.875 MHz.

On the AMSAT Bulletin Board Yasutaka JR2XEA writes:

Komaki Amateur SATCOM Club has an amateur radio station in Komaki City, Japan.

The 50 kg class infrared observation microsatellite “Z-Sat” developed by Mitsubishi Heavy Industries will be launched by the Epsilon rocket.

After satellite separation, Z-Sat will start transmitting CW beacon of VHF band.

The beacon signal is in Morse code and contains information such as satellite battery voltage.

This information is very important as survival information immediately after the satellite is put into orbit.

Therefore, if you can receive the beacon signal from the satellite immediately after the satellite launch,

We would appreciate it if you could report it.
jr2xea <at> nagoya.so-net.jp

Komaki Amateur SATCOM Club’s Twitter is open at the following address. Information on Z-Sat transmission frequency, data format, orbit TLE, etc. will be released in the future.
https://twitter.com/KOMAKI_AMSATCOM

We look forward to your attention to Z-Sat.

Z-SAT on IARU Frequency Coordination page
http://www.amsatuk.me.uk/iaru/finished_detail.php?serialnum=580

AMSAT Bulletin Board https://www.amsat.org/amsat-email-lists/

New EMF Regulation and QO-100 satellite / Microwave operation

Es'hail-2 Qatar-OSCAR-100Ian GM3SEK is giving an online talk on the application of the RSGB-Ofcom Calculator to Microwaves and QO-100 satellite operation on Saturday, October 16, at 1230 GMT (1:30pm BST)

John G3XDY, Secretary UK Microwave Group, writes:

As I expect you are aware, UK stations must have Electromagnetic Field (EMF) assessments in place for operation above 110 MHz from 18th November 2021. Some RSGB guidance on EMF is here:
https://rsgb.org/main/technical/emc/emf-exposure/

The RSGB has been developing a tool that incorporates the Ofcom EMF Calculator but extends the models to include single and multiple Yagis plus various sizes of dish antennas, and takes account of the directivity of the antenna.

Ian GM3SEK, a key member of the team that developed the spreadsheet tool, will be talking about its application to Microwaves and QO-100 operation on 16th October at 13:30pm, in a joint BATC/UK Microwave Group presentation during the BATC Convention.

Registration is not required, to view the talk just go to https://batc.org.uk/live/cat21

Full details of the BATC CAT21 program are available here
https://forum.batc.org.uk/viewtopic.php?f=135&t=7609

This is an important topic for all that operate on VHF and above, and Ian will dispense invaluable practical advice on how to assess your dishes and Yagis in the microwave bands. Not to be missed!