15 Nov
2012
15 Nov
'12
12:37 a.m.
Thanks, realy -l 0 help me. Problem with correct frequency.
Why it is not correct?
When I set -f434500000 -> Tuned to 434753575 Hz
-f100000000 -> Tuned to 100253575 Hz
Can you explain this?
How I can calculate right frequency?
On Wed, Nov 14, 2012 at 11:39 PM, Adam Nielsen <a.nielsen(a)shikadi.net> wrote:
--
live free or die;
I use rtl_fm,
check any options, but I can't listen any good sound :(
For example: rtl_fm -f 10000000 -s 44100 - | mplayer - -quiet
-rawaudio rate=8000:bitrate=44100 -demuxer rawaudio
-s means you are setting the RF bandwidth to 44.1kHz. Maybe you meant -r to
set the output sampling rate to 44.1k?
Either way your -rawaudio option is setting the input sampling rate to 8kHz,
so the audio is going to sound like it has been slowed down.
You may want to add the "-l 0" option to rtl_fm to disable squelch while
you're testing, just to see whether you are getting any audio at all. If
the signal isn't that strong the default squelch value will cause you to
only hear silence.
Cheers,
Adam.