Monthly Archives: July 2015

Log: FM E-skip, June 20th, preliminary summary

I was blessed with a major E-skip opening on the 20th. In addition to “live” DXing, and some single-channel audio recordings, I did almost 2 hours of SDR recordings with my Airspy. That provides almost 10 MHz of coverage (the edges of the bandpass tend to not be useful), amounting to around 47 channels available in a single recording. During this event, there were multiple distant stations on most clear frequencies cross-fading in and out, so I pretty much had to fully listen to around 47×2 hours of audio. I also wanted to assess how persistent stations were, so I kept listening for additional identifications of stations even after I had them securely logged. Also, I extracted recordings for nearly all of the stations, so that took additional time. The SDR recordings were biased toward the lower frequencies, so I probably missed a lot of high-band stations. Continue reading