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Both the FA blue cylindrical filter, and the SAW filter, are band-pass filters.
The difference is in construction of the two.
The FA blue cylinderical filter uses LC ladder network to achive band-pass characteristic.
The SAW filter uses Surface Acoustic Wave principle to achieve band-pass characteristic.
Maximum at what distance a cell phone tower can create interference with ads-b antenna roughly?as here most popular network is 2G which includes 900 and 1800 MHz, these two are near to 1090 Mhz than 3G and LTE,which are more than 2000 Mhz.
The Beast-based FlightFeeder has filtering built-in. Furthermore, it will not work properly with an external 1090 MHz filter installed. If you need support with a FlightFeeder please e-mail adsbsupport@flightaware.cm.