Global Positioning System
Satellite frequencies
All satellites broadcast at the same two frequencies, 1.57542 GHz (L1 signal) and 1.2276 GHz (L2 signal). The satellite network uses a CDMA spread-spectrum technique where the low-bitrate message data is encoded with a high-rate pseudo-random (PRN) sequence that is different for each satellite.

Global Positioning System

Section Title: Satellite frequencies
Table Section Text: All satellites broadcast at the same two frequencies, 1.57542 GHz (L1 signal) and 1.2276 GHz (L2 signal). The satellite network uses a CDMA spread-spectrum technique where the low-bitrate message data is encoded with a high-rate pseudo-random (PRN) sequence that is different for each satellite.

Band	Frequency	Description

L1	1575.42 MHz	Coarse-acquisition (C/A) and encrypted precision (P(Y)) codes, plus the L1 civilian (L1C) and military (M) codes on future Block III satellites.

L2	1227.60 MHz	P(Y) code, plus the L2C and military codes on the Block IIR-M and newer satellites.

L3	1381.05 MHz	Used for nuclear detonation (NUDET) detection.

L4	1379.913 MHz	Being studied for additional ionospheric correction.

L5	1176.45 MHz	Proposed for use as a civilian safety-of-life (SoL) signal.

Sentence(s)

The GPS L1 band's frequency is 1575.42 MHz.

final_sentence: The GPS L1 band's frequency is 1575.42 MHz.