Rtl_fm Guide

Updates for rtl_fm overhaul

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  • -M fm narrowband FM
  • -f ... frequency to tune, use multiple times for scanning
  • -s 12k sample rate, about as narrow as possible for FM voice
  • -g 50 set gain to maximum (use a value appropriate to your dongle)
  • -l 70 set squelch to 70. The exact values varies a lot. Changing the gain or sample rate will require a change in the squelch to compensate.
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