A few months ago I found the WebSDR portal collecting a list of currently active WebSDR servers. Very nice job done by people at University of Twente in Netherlands, especially by PA3FWM. He is running his wideband [0.000 – 19.440 MHz] direct sampling receiver http://websdr.ewi.utwente.nl:8903 using fast ADC and FPGA connected to 2 x 10 […]
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 […]
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). […]