[Orange Pi Zero 3] Finally stable for 24/7 SDR server — Armbian 13 Trixie + legacy kernel 6.6.75 — complete guide

[Omer Ozgur Cetinoglu]

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

[Werner]

moved to staging