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Thread: Do I need a Filter? - Find RF Signals In Area

  1. #11
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    Can a filter improve my 1090 Mhz signals? Does this effect my 1090 Mhz reception? Sorry if it is a stupid question .
    I thought if there is no interference around 1090 Mhz then nothing to worry?

  2. #12
    Captain abcd567's Avatar
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    The strong cell/mobile frequencies overload the dongle, and performance drops. Removing/reducing these cell/mobile signals improves reception of weak signals from far away planes.

    Since 960 Mhz is very close to 1090Mhz, you will need a good filter to remove it.

    EDIT:
    The flightaware filter is good in removing cell/mobile signals in 850 mhz band, but is not effective in removing cell/mibile signals in 960 mhz band. You may need a SAW filter, or Ceramic filter, or Cavity filter to remove 960 mhz band.
    Last edited by abcd567; 2018-09-16 at 13:35.

  3. #13
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    Thank you @abcd567, Your the best
    I am thinking of buying Uputronics 1090MHz ADS-B Filtered Preamp. The Ceramic one is way more expensive then the SAW one.
    Is it worth it? How better reception do you think can I get with Ceramic filter compared to SAW?

  4. #14
    Captain abcd567's Avatar
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    Ceramic being too expensive, SAW is a reasonable choice. It should be able to remove cell/mobile signals you have.

    https://discussions.flightaware.com/...ation/40388/32
    Last edited by abcd567; 2018-09-16 at 16:51.

  5. #15
    Passenger TomNJerry's Avatar
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    Very useful thread, but buried deep under less important threads. Hard to find.
    My post has brought it at the top of list for now, but in due course it will get buried again.
    Last edited by TomNJerry; 2019-06-10 at 18:18.

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