rtl_fm and r820t tuner

Miguel A. Vallejo ea4eoz at gmail.com
Wed Nov 13 12:22:18 UTC 2013


Well, never mind. I added the two lines by hand:

~$ rtl_fm -f 89000000 -R -s 1000000 -g 0 - | baudline -stdin -samplerate
1000000 -quadrature -flipcomplex -channels 2 -format le16
Found 1 device(s):
  0:  Realtek, RTL2838UHIDIR, SN: 00000013

Using device 0: ezcap USB 2.0 DVB-T/DAB/FM dongle
Found Rafael Micro R820T tuner
Oversampling input by: 2x.
Oversampling output by: 1x.
Buffer size: 4.10ms
Tuned to 89500000 Hz.
Sampling at 2000000 Hz.
Output at 1000000 Hz.
Exact sample rate is: 2000000.052982 Hz
rtlsdr_set_tuner_gain_mode(1) -> 0
rtlsdr_set_tuner_gain(0) -> 0
Tuner gain set to 0.00 dB.



~$ rtl_fm -f 89000000 -R -s 1000000 -g 30 - | baudline -stdin -samplerate
1000000 -quadrature -flipcomplex -channels 2 -format le16
Found 1 device(s):
  0:  Realtek, RTL2838UHIDIR, SN: 00000013

Using device 0: ezcap USB 2.0 DVB-T/DAB/FM dongle
Found Rafael Micro R820T tuner
Oversampling input by: 2x.
Oversampling output by: 1x.
Buffer size: 4.10ms
Tuned to 89500000 Hz.
Sampling at 2000000 Hz.
Output at 1000000 Hz.
Exact sample rate is: 2000000.052982 Hz
rtlsdr_set_tuner_gain_mode(1) -> 0
rtlsdr_set_tuner_gain(297) -> 0
Tuner gain set to 29.70 dB.


Hope this helps...
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