Feed TailNav. Earn TailTokens for your coverage.

Connect your ADS-B receiver alongside Flightradar24, FlightAware or anything else you already feed. Every hour of genuine coverage earns TailTokens you can spend on TailNav.

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Station TN-04821
Southend-on-Sea area · 1090 MHz
Online
Aircraft now142
Messages / s1,186
Max range238 nm
Uptime 30 days99.4%
MLATSynced
Only you saw37
TailTokens this month4,310

Example of the dashboard every feeder gets. Figures are illustrative.

How feeding works

Your receiver keeps doing what it does now. The feed client reads the decoded messages on your local network and sends a copy to us.

Register your receiver

Create an account and add a station. You get a private feeder key that ties the data to your account.

Install the feed client

One command on a Raspberry Pi running readsb or dump1090. Ultrafeeder users add one line to their config.

# your key is on your account page
curl -fsSL https://tailnav.com/feed.sh | sudo bash -s -- <key>

Earn TailTokens

TailTokens are added to your account every hour your station sends real, useful data, and show on your station dashboard.

How TailTokens work

TailTokens reward coverage, not raw volume. A receiver on a hill that sees aircraft nobody else can earns more than three receivers on the same street.

New TailTokens are checked for 14 days, then they're yours to spend on rewards in your account. A station that's online all month earns about 7,200, plus up to 2,500 in bonuses for the coverage it adds.

TailTokens have no cash value. Rates can change; any change is announced on Discord first. See the terms.

You earnFor
10 an hourEach hour your station sends genuine aircraft data that passes our checks.
Up to 20 more an hour1 for every 10 aircraft that only your station heard that hour.
1.5 timesWhen no other station is within 50 km, because you're filling a gap in coverage.
1.5 timesWhen your receiver's timing stays in sync with its neighbours, so we can locate aircraft that don't broadcast a position (MLAT).
2,000 / 1,000 / 500For the top three stations on the monthly leaderboard.
500When someone you invite starts feeding. They get 250 too.

Bonuses for unique coverage, coverage gaps and MLAT add up to at most 2,500 a month per station. Receivers within 1 km of each other share their TailTokens.

Why TailTokens can't be faked

Everything is measured on our servers from the data your receiver actually sends. Nothing you type in counts towards TailTokens.

Feeds that fail these checks earn nothing, and TailTokens from a feed that turns out to be fake are removed during the check period.

  • Radio timing. Real receivers stamp every message with a precise clock. With MLAT on, those times have to agree with nearby receivers to within microseconds, which copied or replayed data can't do.
  • Raw messages. A real receiver hears all kinds of transponder replies, including aircraft without GPS. Data rebuilt from another website only has positions.
  • Range and signal. Aircraft have to be within radio range of the receiver's location, and signal strength has to fall away with distance the way real radio does.
  • Cross-checks. Positions are compared with other receivers. Aircraft that only one feed reports, and that never appear anywhere else, are flagged.
  • Duplicates. Two keys sending the same messages, or several stations in one spot, only earn once.
  • One account per person. Verified email, limits on stations per account, and a review before large spends.

Setting up a new receiver

No specialist knowledge needed. If you can set up a Raspberry Pi, you can run a receiver. Height matters most: an antenna in the loft or on the roof sees much further than one on a windowsill.

Ready-made images such as adsb.im set up the decoder and your feeds through a web page, with no command line.

What you'll need

  • Raspberry Pi 3, 4 or 5Or any small Linux computer that can run all day.
  • RTL-SDR radio for 1090 MHzOnes with a built-in filter and amplifier pick up noticeably more.
  • 1090 MHz antennaMounted high, with a clear view of the horizon.
  • Cable and power supplyShort, low-loss coax and a reliable power adapter.
Typical total

Rough prices for new parts. Converted from UK prices at today's exchange rate.

Questions

Will feeding TailNav affect Flightradar24 or FlightAware?

No. The feed client only reads data your decoder already shares on your network. Your other feeds, and any rewards they give you, carry on as before.

Do you publish my location?

No. We need your receiver's position to work out MLAT positions and check your coverage, but we never publish it. Public coverage maps show receivers blurred to a wide area.

How much internet data does it use?

Roughly 5 to 15 GB a month depending on how busy your sky is, less if your decoder reduces the message rate.

Can I run more than one station?

Yes, if they cover different areas. Stations close together that see the same aircraft share their unique-coverage TailTokens.

Can I stop feeding?

Any time, with one command. Confirmed TailTokens stay in your account.

Not ready to connect yet?

Tell us roughly where you are and what you already feed, and we'll help you get set up. If your receiver is running, create an account and connect it now.

Networks you already feed (optional)