• #Eurocopter EC225 LP Super Puma 2 🛫 ascending over #Shenzhen, #China at 1000ft at 90.3mph heading E with tail B-707…
    about 2 hours ago

US NAVY using ADS-B code hopping

Darren Koch (GFDL 1.2 or GFDL 1.2), via Wikimedia Commons

Recently, I started to detect many P8 Poseidon aircraft above South China Sea, like if a dozen of different P8 were flying in the area each day. The only explanation I see is that they are doing ADS-B code hopping, switching to a new TACTICAL code every few minutes.

Here are some of the codes I detected in the past few days: AE686A, AE6879, AE6889, AE67B3, AE6784, AE687D, AE6850, AE6854, AE6809, AE6793, AE6807, AE6845, AE6819, AE6836, AE67C2, AE67DC, AE6885, AE67D6, AE6813, AE687E, AE689E, AE6884, AE67DE, AE6803, AE682D, AE687C, AE6849, AE68A2.

Few more codes detected recently: AE6848, AE67DF, AE6870, AE6883, AE683D, AE6822, AE6814.

Most of the time, I don’t get a position for these aircraft, as they obviously don’t broadcast it, and they are flying too far offshore which makes it difficult to get a MLAT position, as not many receivers can detect them at the same time.

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