You can run dump978 on another pi and display it on a combined dump978 and dump1090 map.
Just send the output to the second device on port 30001.
Joe’s scripts (ADS-B Receiver ads-b-flight-tracking-f21/ads-b-receiver-project-setup-scripts-t36532.html ) will do the same thing on one device. They provide separate maps/pages for each.
The hard part is finding an antenna and filter(if required). FA made a dual band for a while but they are no longer available.
I have only been able to find an amp/filter from hab/nevis. airspy.us sell the 1090Mhz versions in the US but the 978Mhz have to be imported from the UK.
store.uputronics.com/index.php? … duct_id=87
DPD make a 978Mhz antenna but it is $150. ( I use their 1090Mhz antenna and it works really well)
dpdproductions.com/page_vhf_ … #978adsout
I am not 100% sure that 978 is fed into FA as the notes say it is formatted as ADS-R.
I get 10,000 to 35,000 hits per day in NYC using a temporary directional antenna. I expect more when I install the FA dual band antenna on the chimney soon.