I have a working 1090+978 system that is feeding to ADSBx (and FA). Here's my hardware setup today: Dual-band antenna (outside at top of chimney) 10ft coax (N) Lightning arrestor (N) 25ft coax (N to SMA) to wiring closet indoors FA dual-band filter (SMA) Splitter cable (SMA) FA blue stick (for 1090) and FA orange stick (for 978) RPi 3B+ (At first I put the FA filter between the splitter and the orange stick, but moving it before the splitter improved my 1090 counts yet didn't have a noticeable effect on range. That confuses me...) I'm currently getting ~150nm at 30kft (1090 only, obviously) and ~50nm at 5kft (both 1090 and 978), which seems pretty good for a first attempt. But, like everyone, I want to improve on that--and that means amplification. There's lots of info on how to do it for 1090-only setups, but I can't figure out the best way to do it for a dual-band setup since (so far) we're relatively rare. I've looked at the Uputronics filter/LNAs, but for best effect I'd need to put two (one 978, one 1090) at the mast, which means a second coax run into the house (and likely replacing the first run with SMA-SMA), plus either get two bias-Ts or switch to two SDRs with bias-T built in. All that adds up to a very expensive project, which is tough to swallow given I don't know how much it will help. A much cheaper option would be a single wideband LNA (fronted by the FA filter I already have) in my wiring closet, powered by USB. I'm concerned about how much noise this will amplify, though, given the FA filter has a pretty wide passband; there has to be a reason the Uputronics guys used triple filters, including a SAW, right? Amplifying after the long coax run obviously isn't ideal either. Are there any other options that would likely have a better (or at least more certain) cost/benefit ratio?