Radio & telecom
Digital PMR446 walkie-talkie
Advanced60 min
A full radio link on the PMR446 band: modulation, channel, noise, demodulation and quality measurement.
What you get
A message crossing a simulated radio chain end to end, with spectrum, constellation and bit error rate on screen.
Parts (simulated)
- Built-in RF/SDR lab
- Simulated transmitter and receiver
- Virtual spectrum analyser
Nothing to buy: every component here is simulated in the browser.
Project steps
- 01Pick the band and modulation, then watch the transmitted spectrum.
- 02Add noise and distance attenuation in the channel.
- 03Demodulate and read the received constellation.
- 04Measure BER and EVM, then adjust power or symbol rate.
- 05Compare the achieved range with the link-budget theory.
What you learn
- Radio link budget
- Digital modulations
- Signal-to-noise ratio and BER
- Reading a spectrum
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