After nearly one year of kernel crashes, I finally found the
stable configuration for Orange Pi Zero 3 as a 24/7 SDR server.
The critical discovery: legacy kernel 6.6.75-sunxi64 is the only
stable option. The current kernel crashes within hours under SDR load.
Additional fixes:
- Blacklist aw859a WiFi driver (causes kernel instability)
- Blacklist DVB modules for RTL-SDR
- Lock libairspyhfSupport.so with chattr +i (SpyServer/SoapySDR conflict)
- Mask systemd-networkd-wait-online
- CPU governor: schedutil
- usbcore.autosuspend=-1 for USB SDR dongles
Running 3 SDRs simultaneously: RTL-SDR Blog V4, Airspy HF+,
dedicated ADS-B. 4 antennas via HMC241 GPIO RF switch.
30+ decoders. Full Android control.
Complete guide: https://ozcet.github.io/sdr-server-guide
After nearly one year of kernel crashes, I finally found the stable configuration for Orange Pi Zero 3 as a 24/7 SDR server. The critical discovery: legacy kernel 6.6.75-sunxi64 is the only stable option. The current kernel crashes within hours under SDR load. Additional fixes: - Blacklist aw859a WiFi driver (causes kernel instability) - Blacklist DVB modules for RTL-SDR - Lock libairspyhfSupport.so with chattr +i (SpyServer/SoapySDR conflict) - Mask systemd-networkd-wait-online - CPU governor: schedutil - usbcore.autosuspend=-1 for USB SDR dongles Running 3 SDRs simultaneously: RTL-SDR Blog V4, Airspy HF+, dedicated ADS-B. 4 antennas via HMC241 GPIO RF switch. 30+ decoders. Full Android control. Complete guide: https://ozcet.github.io/sdr-server-guide