Most SDR can be remote controlled very easily, I do see a lot of weird software to do this and it is often not required! If you have installed rtl-sdr then you have everything that you need. No other software is needed on the server other than the rtl-sdr drivers. This is assuming you have an RT-SDR V3, NooElec SmartSDR or similar. Though it should work with any Realtek RTL2838U receiver.
This is so easy, but I always forget how to do it. All you need installed on your remote SDR is rtl_sdr and your drivers. then type in a terminal
rtl_tcp -a 192.168.0.41
(replace 192.168.0.41 with your ip), don't miss the '-a'. To find your ip simply type
Then go to your PC, laptop or whatever you want to access the remote Pi from, start GQRX and go to device setting, select RTL Spectrum server and enter that same string
(replace your own ip and port number) . Don't worry if GQRX selects 'Other' so long as the string is still intact as it will still work.
|Adding settings to GQRX|
If you re using SDR++ you can select rtl_tcp as the device and 192.168.0.41 (replace with your ip) and 1234 in the port number (unless rtl_tcp said differently.
|Settings added to SDR++|
You may experience some delays, so set the bandwidth to say 1Mhz and use ethernet where possible, other than that it is just like being there!
Now we want it to start rtl_tcp every time the PI is started, so add the lines like below.
_IP=$(hostname -I) || true
if [ "$_IP" ]; then
printf "My IP address is %s\n" "$_IP"
/usr/local/bin/rtl_tcp -a $_IP &