Tag: FSK

“Mysterious Foghorn” is Chinese Over-the-Horizon Burst Radar

The International Amateur Radio Union Region 1 (IARU-R1) Monitoring System (IARUMS) newsletter reports a mysterious “foghorn” — a Chinese over-the-horizon (OTH) burst radar — is operating in Amateur Radio bands. “We observed the mysterious foghorn on 7, 10, and 14 MHz,” the newsletter recounted. “This is a Chinese OTH radar, which is often jumping, and […]

via the ARRL: Jammer Jams Intruder as Amateur Band Encroachments Continue

A station believed to be that of a radio amateur in the Wittenberg, Germany, area attempted to use CW to jam a Russian Navy FSK (F1B) signal intruding on 14.192 MHz, according to the International Amateur Radio Union Region 1 (IARU-R1) Monitoring System (IARUMS). The June IARUMS newsletter said the signal has been spotted for […]

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