radio – : : personal interface : :

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radio – : : personal interface : :

Tag: radio

November 22, 2011

Ionosphere conditions

By Tom In Science

Ionosphere conditions seem to follow a predicted tendency to reach a maximum in 2012/2013, so we may experience a long lasting DX openings and maybe blackouts :/ too. This situation is obvious from the diagrams at NOAA Space center: http://www.swpc.noaa.gov/SolarCycle/ http://www.swpc.noaa.gov/SWN/index.html Signals often travel in mysterious ways, so we can reach Australia and […]

May 2, 2011

Mysterious signals at 126 MHz

By Tom In Technology

While I was measuring a harmonic content of the signal from an oscillator in HF range, I tuned the great Kenwood TH-F7 TRX to VHF band. The receiver mode was set to USB and the frequency band to 108-138 MHz, where any jamming signal should not appear (air traffic control voice and data communications reside there). […]