Content (e.g. blog posts, information pages, and files/links) about the activities of the RRRA Technical Committee and the equipment/systems they maintain, along with technical topics of general interest.

June 2021 Eclipse Festival Seeks Ham Participants

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.

Updated FCC Radio Frequency Exposure Rules Become Effective on May 3

Two years ago KA0LDG made a presentation titled RF Exposure Evaluation for Amateur Radio Operators (PDF and Powerpoint versions are available in the Training and Education | Presentations folder on the RRRA Groupsware server) in anticipation of the updated FCC RF exposure rules.

This week ARRL reports in ARRL General Bulletin ARLB011 (2021) and the Updated Radio Frequency Exposure Rules Become Effective on May 3 News story:

The FCC has announced that rule changes detailed in a lengthy 2019 Report and Order governing RF exposure standards go into effect on May 3, 2021. The new rules do not change existing RF exposure (RFE) limits but do require that stations in all services, including amateur radio, be evaluated against existing limits, unless they are exempted. For stations already in place, that evaluation must be completed by May 3, 2023. After May 3 of this year, any new station, or any existing station modified in a way that’s likely to change its RFE profile—such as different antenna or placement or greater power—will need to conduct an evaluation by the date of activation or change. 1

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