For last 1 year I have run 2 independent 1090 mhz recievers on single RPi 2B (Station #5252 and #6396) with 2 dongles and 2 antennas.
Currently I am running above noted 2 independent receivers on single OrangePiPC.
However both are for 1090 mhz only (no dump978). I think I can modify it to one station (#5262) 1090mhz only, and other station (#6396) dump978 only.
The dump978-fa+dump1090-fa are currently on RPi model 2B (stn #76000)
Yes, just a change on the web side, the groundwork on the piaware side was done in 3.8.0
I will probably add UAT to my setup soon. I am using a Pi 3B+ with the blue FA dongle, SAW filter and FA antenna. To start I would probably use the Orange dongle, no filter, and a homebrew antenna.The closest (buy) GA airport is about 5 miles away. ADSB traffic from there is mostly exec jets/turbo-props and training flights.
My Piâs CPU utilization gets up to 40% on busy days. From reading the above thread UAT doesnât have much traffic and so wonât add much CPU load - is this correct?
Sifting through the raw data is what produces CPU load mainly.
This depends more on noise than anything else, and that only in a limited fashion.
Thatâs 40% on one CPU core, so itâs not an issue that 978 usually uses more CPU than 1090 due to the different encoding of the signal.
Thanks. Iâll plan on building an antenna then getting another dongle.
Is there a way to operate the 1090 and 978 systems on two different processors but combine the results into a single FlightAware site? Or must I run the two SDRs on a single processor?
Should be possible by using combine1090 by @wiedehopf
An alternative method is linked below, but requires lot of manual commands, and therefore I dont recommend it. Using combine1090 noted above is much easier.
https://discussions.flightaware.com/t/dump1090-fa-instead-of-combine1090/54760/20
Look into the receiver-type other and uat-receiver-type other piaware config options; these let you point piaware at a network data source rather than a local SDR.
No you canât use it for 978.
Describe your setup and what you want to do.
Where are these 2 pis, on the same network?
I am going to try this:
IMPORTANT: xxxxxxxx = yyyyyyyyy
.
Piaware SD card image on Pi #1 (running 1090 Mhz only)
sudo piaware-config receiver-type rtlsdr
sudo piaware-config uat-receiver-type none
sudo piaware-config feeder-id xxxxxxxx
sudo systemctl restart piaware
Piaware SD card image on Pi #2 (running 978 Mhz only)
sudo piaware-config uat-receiver-type sdr
sudo piaware-config receiver-type none
sudo piaware-config feeder-id yyyyyyyy
sudo systemctl restart piaware
That wonât work well, the infrastructure assumes there is only one piaware with a given feeder ID; youâll get some strange effects if youâre feeding with the same feeder ID from more than one instance.
The 1090 is an AirSpy mini at 20 MHz on a Pi4 Itâs busy at 75% of a core so Iâd prefer to leave the 978 on its own Pi 3. Both Pi are connected via the same Ethernet network switch. .
You want to use the piaware on the Pi4 then?
So you need the IP address of the Pi running the 978 stuff, letâs say 192.168.2.55
Then you use these commands on the Pi4
sudo piaware-config uat-receiver-type other
sudo piaware-config uat-receiver-host 192.168.2.55
sudo piaware-config uat-receiver-port 30978
sudo reboot
This should do the trick.
I am looking to add UAT to my current setups. I have been trying to figure out how to add a second antenna (All my sites currently have the FA 1090 antenna, and I purchased a FA 978 antenna for testing). New antenna mounts to hold them apart, new cable runs, all that is getting to be a bit much since they are all up on masts.
I came across this dual 1090/978 antenna (5.5dBi 1090/978 N-type Female Antenna - 26-inch â ADSBexchange.com). It would be a lot easier to swap an antenna and add a splitter and some filters at the Pi. (https://www.amazon.com/Stratux-1090-MHz-Splitter-Filter/dp/B07NDNBW6G/)
How have other people handled adding 978? Anyone done the single antenna and then splitting it?
Worked fine, thanks.