Distinguishing SDR dongles


#1

My setup is two dongles (1 - NooElec R820T and 1 - NooElec R820T2) into a single RPi being processed by 2 instances of dump1090 with one doing double duty to merge the streams into a single feed. I really need to be able to distinguish the two dongles so I can set the ppm error and automate the startup/shutdown. Has anyone successfully used rtl_eeprom (or any other method) to distinguish two dongles? I just need some reassurance this does work for both T and T2 models as well as the step by step instructions (i.e., unplug, reboot, plug in, etc. sequence and the exact command line to use for rtl_eeprom). Thanks for any help here.


#2

It worked for me on both R820T and R820T2 dongles. (The EEPROM isn’t on the tuner, it’s on the 2832, it shouldn’t matter what tuner you have).
I don’t have exact instructions on hand because, well, I set the serial numbers once and I didn’t need to touch them again. It was something like:

stop dump1090

$ rtl_eeprom -d 0 -s 00040055

unplug and replug

Then I just specified the serial number as the device index for dump1090.


#3

Thank you again obj! --Kevin