Cyber threats prompt return of radio for ship navigation

Reuters report the risk of cyber attacks targeting ships’ satellite navigation is pushing nations to delve back through history and develop back-up systems with roots in World War Two radio technology. Continue reading

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SWL Jamming in the Cold War Era

Many of us hams of the old school started out as s.w.l.s in our youth. The international broadcast bands at the time were occupied by stations shoulder to shoulder. One of the details we encountered was jamming. We could often hear in North America that broadcasts from the B.B.C., V.O.A., Radio Liberty and many others were being jammed. Continue reading

Radio Caroline ham radio station

(Editors note:  This brings back a lot of memories of growing up in the ’60’s for me even here in Canada.)

The Essex-based Martello Tower Group will be operating special event station GB5RC from the MV Ross Revenge, home of Radio Caroline, to commemorate five decades of offshore radio broadcasting

Continue reading

The Very First DX – December 12, 1901

Marconi at 04.30 GMT on 12 December 1901, Guglielmo Marconi succeeds in sending the first transatlantic wireless communication demonstrating that radio waves transmissions could be transmitted across the Atlantic ocean, disproving detractors who told him that the curvature of the earth would limit transmission to 200 miles or less.

The Italian inventor received in St. John’s, Newfoundland, Canada, the letter S in morse code (three dots) transmitted from Poldhu, Cornwall, in England.

You can read the rest of the story at DX Zone.  Just being a little picky here but they keep referring that the signal was received at Newfoundland, Canada.  Newfoundland didn’t join Canada till 1949.

Aircraft Flutter

(My thanks to fellow member John VE7AOV for submitting this article)

・Aircraft flutter・ may soon be harnessed to a practical purpose. The B.B.C. reports that investigations are being made in the U.K. of employing commercial television and other broadcasting services to track aircraft. A reticulation of receivers, feeding information to a central facility, would furnish data for a computationally intense determination of aircraft location based on that receiver data. Continue reading

King Spark

fellow coastal ham member ve7aov on spark radios.  Thanks john for an informative article

We are a hundred years on from when King Spark ruled the air waves. Those days are out of living memory. Now without living advocates spark technique is too often in danger of being dismissed as lame and its importance lost to our “culture” as radio operators. What spark technology did was to “invent” the pattern of radio station operation that we hams still know today. Continue reading