У вашего броузера проблема в совместимости с HTML5
SDR and Panadapter display on Kenwood TS-570D. I fed the output of the first (73.05Mhz) IF stage into a $20 RTL-SDR stick. It gives a full 2Mhz of visible spectrum on the display.
Software is HamRadio Deluxe for CAT control (for click and tune) and HDSDR for the display. Great inexpensive way to breath new life into an older rig.