Issue 382 May 17, 2025

Top links

Hamvention: Thousands flocking to Xenia this weekend for Amateur Radio show
Last year’s attendance was 35,000, more than the population of the entire city of Xenia.
Dayton Daily News

ARRL seeks entry-level HF privileges in FCC proposal
Amateur Radio association said filing reflects need to update rules for digital modes.
RadioWorld

ARRL renews defense of the 902-928 MHz Amateur Radio band
The FCC is considering a petition by NextNav, Inc., a licensee in the 900-MHz Location and Monitoring Service (LMS), to reconfigure the 902-928 MHz band.
ARRL

Record-breaking participation in 2025 Amateur Radio exam in Bangladesh
More than 900 participants took part in an examination organized by the Bangladesh Telecommunication Regulatory Commission.
QRZ

Pile-up speedbumps: The QSO Killers
Disruptions in a pile-up arise when DX hunters deviate from the expected rhythm of a standard QSO.
Delta Alfa

Radio apocalypse: Meteor burst communications
The world’s militaries have always been at the forefront of communications technology.
Hackaday

Matching an EFHW antenna – a third way
Despite the advantages, the EFHW has its critics.
Ham Radio Outside The Box

Khanfar software: RTL-SDR CFAR mask analyzer
This powerful tool combines advanced Constant False Alarm Rate (CFAR) algorithms with innovative Frequency Mask Trigger (FMT) techniques to provide reliable signal detection even in challenging RF environments.
RTL-SDR

Video

Bird feeder HF antenna
A balcony-anchored "motorized bird feeder" antenna with amazing radials.
Ham Radio Perspectives

HamSCI: Space weather we can do together
What's next for HamSCI, including new developments in the HamSCI Personal Space Weather Station project.
RSGB

This ambulance Is actually a mobile Ham shack
From HF radios and power distribution to antennas and off-grid capability.
Broken Signal