Tag: VLF

via the ARRL: “Quantum Radio” May Offer New Twist on Communicating in Problematic Environments

Researchers at the National Institute of Standards and Technology (NIST) have demonstrated that quantum physics might enable communication and mapping in locations where GPS, cell phones, and radio is not reliable or don’t work at all, such as indoors, in urban canyons, underwater, and underground. NIST announced the technology advance on January 2. The technology may have marine, military, […]

via the ARRL: Radio Amateurs Continue to Plumb the Spectral Depths

David Bowman, G0MRF, reports that he and Dave Riley, AA1A, have completed what is believed to be the first transatlantic contact on 630 meters since the MF band was released to US radio amateurs this past fall. They used JT9 digital mode to complete the more than 5,160 kilometer (approximately 3,200 miles) contact during the […]

via HACKADAY: Sferics, Whistlers, and the Dawn Chorus: Listening to Earth Music on VLF

We live in an electromagnetic soup, bombarded by wavelengths from DC to daylight and beyond. A lot of it is of our own making, especially further up the spectrum where wavelengths are short enough for the bandwidth needed for things like WiFi and cell phones. But long before humans figured out how to make their own […]

Band Plan Proposed for Eventual 472-479 kHz Use

ARRL 630-Meter Experiment Coordinator Fritz Raab, W1FR, has proposed an informal band plan for the pending 472-479 kHz band. Raab said that once US radio amateurs are granted access to 630 meters, he would move stations operating under the blanket WD2XSH FCC Experimental (Part 5) license to 461-472 kHz. “This will clear the amateur frequencies, […]

Historic NSS Call Sign to be Reactivated for First Time in More than 40 Years

Operators from the US Naval Academy Radio Club (W3ADO) and the Potomac Valley Radio Club (W3GRF) will reactivate the historic NSS call sign on May 13-14 during the Armed Forces Day Crossband Military/Amateur Radio Communications Test. Operation from the former NSS Naval Radio Station site on Greenbury Point in Annapolis, Maryland, will get under way […]

ARRL: VLF Transmissions, Amateur Radio Activity Set for Alexanderson Day on July 3

VLF enthusiasts, take note: The SAQ Alexanderson alternator will be on the air for “Alexanderson Day,” Sunday, July 3, for a full-day event that includes both VLF transmissions and Amateur Radio HF activity from SK6SAQ, the ham station at the Grimeton heritage site in Sweden. The Alexanderson alternator — an electromechanical radio transmitter — is […]

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