RF Scan of Various Combinations of Dongles, Filter, and LNA

FlightAware ADS-B Flight Tracking
31

OK, here we go. A Cage Match between…

  • V-Lad the Impaler (@abcd567’s V-Stub)
  • The Mutant Spider (@gtj0’s 1/4λ Spider with doubled radials)
  • The Big Green Stick (The FlightAware 1090 MHz ADS-B Antenna - 66 cm / 26 in)

The 3 antennas are mounted such that their main elements are about 1m above my roofline. 3 RG-142 downleads, 3 FlightAware 978-1090 filters, 3 NooElec Nano V3 SDRs, 49gb gain. The SDRs and filters are in a Faraday cage.

I’m using a modified dump1090/view1090 that displays RSSI and Distance summaries and the stats were captured within 0.5 seconds of each other.

V-Lad

 Aircraft:  59  RSSI: Max -16.2+ Mean -28.1 Min -35.8-  MaxD:  206.3nm+
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The Mutant Spider

 Aircraft:  57  RSSI: Max -14.1+ Mean -27.4 Min -35.4-  MaxD:  192.8nm+
───────────────────────────────────────────────────────────────────────

The Big Green Stick

 Aircraft:  75  RSSI: Max -10.1+ Mean -25.2 Min -35.6-  MaxD:  253.3nm+
───────────────────────────────────────────────────────────────────────

I think we have a clear winner!!

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