Learning live with amateur radio

Every radio packet is a tiny science story.

Follow signals from the air to the internet while exploring physics, geography, weather, electronics, and code.

Balloon explorer

W4NYR-1

Not heard yet

NE Listening for its next “hello”

Latitude north / south: —
Longitude east / west: —
Altitude height above sea: —
Speed across the ground: —
Course direction of travel: —
Signal audio decoder input: —

Awaiting balloon telemetry.

Open this balloon on the APRS map ↗ Think about it: what can make a VHF signal easier or harder to hear?

Follow the signal

How does a packet travel?

→ → →

Live decoder audio0

A quiet meter is normal until the radio hears a transmission.

Samples each second: —
Sample errors: 0
Internet server: —
Listening time: —

Mission challenges

How many can your team unlock?

Updates automatically

Interactive learning lab

Choose something to investigate

Ready to explore

✦ Curious Mind 📡 Signal Scout 🔎 Packet Detective 🧪 Lab Builder 🚀 Mission Scientist

Signals become information

Live radio message stream

Newest first

What am I looking at?

Station identifies who sent it. Path shows how it traveled. Packet is the decoded information—sometimes a location, sensor reading, weather report, or short message.

Heard	Station	Type	Path	Decoded packet
Listening for APRS packets…

Who is out there?

Stations heard today

No stations heard yet.