Kalpana Kalpana (Editor)

Chirp transmitter

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A chirp transmitter is a shortwave radio transmitter that sweeps the HF radio spectrum on a regular schedule. If one is monitoring a specific frequency, then a chirp is heard (in CW or SSB mode) when the signal passes through. These transmitters are mainly used for over-the-horizon radar systems and for probing ionospheric properties.

An analysis of current transmitters has been done using SDR technology.

For better identification of chirp transmitters the following notation is used: <repetition rate (s)>:<chirp offset (s)>, where the repetition rate is the time between two sweeps in seconds and the chirp offset is the time of the first sweep from 0 MHz after a full hour in seconds. If the initial frequency is greater than 0 MHz, the offset time can be linearly extrapolated to 0 MHz.

List of chirp transmitters

  • Duga-3
  • References

    Chirp transmitter Wikipedia


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