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To identify  transmitters a in frequency range (250kHz), a Frequency-Time Map is plotted. On the y-Axis is the time and on the x-Axis the Frequency. […]

Today I was testing againg the accuracy of the automatic recording feature. Again I used one Raspberry Pi, two SDR Dongles and two directional antennas. […]

The tracking of bat migration 2016 just started. You can find more Details here: http://www.fledermaus-aksa.de/ There are three bats having an transmitter right now: 150.022 […]

The new Image for the Raspberry Pi got several new features: Software Defined Radio (SDR) Receiver Software Defined Radio (SDR) Server for SDR# Recording Signals […]

The first quick results are a little suprise to me. The system seems to work better then expected and we have either a second transmitter […]