Re: [Discuss-gnuradio] Updated NBFM Recorder

[Tom Rondeau]

On Sat, Jun 14, 2014 at 8:23 PM, madengr <address@hidden> wrote:

Hi all,

I updated my multi-channel, narrow-band FM recorder, tested with B200 and
N210, and put it on GitHub.

https://github.com/madengr/nbfm_rec

Features:

    Parallel demodulation and recording of NBFM radio channels
    Up to N channels limited by CPU and bandwidth of SDR (tested to 25 MHz)
    Squelched audio blocked from recording
    Mixed audio for real-time monitoring
    Channels recorded to individual *.wav files

Tested with:

    GNU Radio 3.7
    Ettus N210 + WBX
    Ettus B200

Lou
KD4HSO

Nice work.

I recommend seeing if you can replace the bank for xlating_fir_filters with a pfb_channelizer_ccf block. This should be more computationally efficient than all of the xlating filters, so I'd really like to see if that's true for you app.

Tom