I've seen so little 978 traffic out here in Hawaii, I want to remove the 978 dongle and the Y cable splitter to save power, sell the 978 dongle and simplify the "appliance" as Mr. W puts it. Am I correct that I can simply edit the config file to set dump 978 to NO, remove the dongle and reboot? Any other steps necessary?
that will work. i'm not sure how much power you will save, but you can also reduce the CPU used by the decoder. This would be done by changing /boot/adsbx-env RECEIVER_OPTIONS="--device-type rtlsdr --ppm 0" to RECEIVER_OPTIONS="--device-type rtlsdr --ppm 0 --preamble-threshold 75" Higher threshold will mean less CPU usage but there are diminishing returns.
Mahalo!. The two dongles look almost identical. The only major component difference I see is a metal component (L113) near the unpopulated pad for LED 1. So which is 978? I don't see any other labels to differentiate these.
Huh? 1090 has a SAW filter, the other unit is for whatever purpose, it's not filtered. If you're talking adsbexchange SDRs. (well the two FA SDRs are similar) They have a colored case don't they?
Two naked boards. No labels. These are the original ADSB Xchange units shipped as a complete case. Naked boards as you see. I suspect that the board on the right is 1090. Component L13 just might be a saw filter. It's just below the SMA connector, and to the left of the empty LED 1 pad.
Mystery deepens. I just had a new Blue metal case 1090 dongle show up in the mail from the ADSB-X store. I opened it and the PC board is substantially different from the two naked boards, so no ID help there.
I don't know what you got shipped and it doesn't matter much to me. SDRs in such a system will have their serials set you can see with rtl_test. But yeah it's clear the one with the SAW filter (on the right) is the one with 1090 filtering .....
