RS0ISS Will Transmit Slow-Scan TV Images from the ISS

Russian cosmonauts on the International Space Station (ISS) plan to transmit slow-scan TV (SSTV) images on 145.800 MHz FM 9-10 June 2021. The transmissions, which will use SSTV mode PD120, are part of the Moscow Aviation Institute SSTV experiment (MAI-75) and will be made from RS0ISS in the Russian Service Module of the ISS using a Kenwood TM-D710 transceiver.

The tentative schedule calls for transmissions on 9th June 2021 from 0935 UTC until 1350 UTC and on 10th June 2021 from 0855 UTC until 1550 UTC. Dates and times are subject to change. Hams on Earth should be able to receive the signals on a handheld transceiver using a quarter-wave whip antenna, with FM filters set for 25 kHz channel spacing.

Predicted ISS pass times - https://www.amsat.org/track/

Action Against Solar Panel Optimizer Causing Radio Interference

Action Against Solar Panel Optimizer Causing Radio Interference

The German Bundesnetzagentur (BNetzA) reports in its official publication Amtsblatt 9 that a device from SolarEdge does not comply with the EU Electromagnetic Compatibility (EMC) Directive. BNetzA indicates that the EU declaration of conformity is not in order and that the interference levels are too high. BNetzA therefore imposes a market-restricting measure on SolarEdge.

Read More

HamSCI Science Experiment

HamSCI is looking for ham radio operators to make recordings of time-standard stations during the June 2021 annular solar eclipse across the Arctic Circle as part of a citizen science experiment.

Researchers will use the crowd-sourced data to investigate the superimposed effects of auroral particle precipitation and the eclipse on HF Doppler shift.

Participants would collect data using an HF radio connected to a computer running open-source software. Radio amateurs and shortwave listeners around the globe are invited to take part, even stations far from the path of totality.

Last year's eclipse festivals included more than 100 participants from 45 countries.

The experiment will run 7-12th June 2021.

All participants will receive QSL certificates and updates as the data is processed.