Raspberry Pi based remote SDR head
smile_k at libero.it
Thu May 9 17:30:51 UTC 2013
Il 03/05/2013 01:57, Simon PurplePlaNET ha scritto:
> Hi folks,
> I've been messing around with rtl_tcp and an RTL2832 device on a Raspberry Pi and want to add a bank of front end filters and a LNA that can be controlled by the GPIO.
> I want to allow manual control of the signal path via a web page hosted on the Pi, but also want to be able to have the filters selected automatically based on the frequency that the RTL device is tuned to.
> I noticed that rtl_tcp helpfully echos the frequency changes to the console, so I wrote a simple shell script to gather this data and control the GPIO.
> Somebody may have already done this and there is probably a better way to achieve it but, if this would be of any use to you, please feel free to copy and use as you wish.
Just tryed this command:
stdbuf --output=0 rtl_tcp -a 192.168.2.15 -p 1234 > rtl.data
I don't have anything connected to the gpio pins...but i cannot see any
output from your script while changing freqs...(yes, i've gone below
100mhz and above 500mhz).
It's quite strange....the rtl.data is created in the same folder of your
Taking a look at rtl.data, it contains the correct output of the
standard output of rtl_tcp.
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