How GPS Works

Related Terms

• L1, L2, L5
• L2C
• Block IIF

Help Us Grow

link to us | request a link
contribute content

Block IIR-M Satellites

The first Block IIR-M satellite was launched in 2005. Block IIR-M satellites are a "modernized" version of Block IIR.

Block IIR-M satellites broadcast signals on the L1 and L2 carrier frequencies.

In addition to the signals broadcast by older GPS satellites, Block IIR-M satellites include two new signals:

• a second civilian signal (L2C) added to the L2 carrier frequency
• a military signal (M-Code) added to L1 & L2

Block IIR-M satellites are not able to broadcast L5 signals.

Newer satellite generations include Block IIF.

See Also

• n/a