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GPS L2 (1227.60 MHz)

GPS L2C civilian signal · Carrier-phase GNSS for RTK surveying · Ionospheric correction (dual-frequency)

Frequency Range1227.60 MHz
Wavelength24.4 cm
ITU / Standard—

Applications

  • →GPS L2C civilian signal
  • →Carrier-phase GNSS for RTK surveying
  • →Ionospheric correction (dual-frequency)

Propagation Characteristics

Same orbital altitude as L1. Dual-frequency L1+L2 receivers can correct for ionospheric delay, enabling centimeter-level accuracy.

Regulatory Notes

RNSS protected band. L2C signal added on Block IIR-M satellites (2005+). Older Block II/IIA satellites transmit military P(Y) code only on L2.

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