We will try to keep this page updated as we receive status changes from the USAF NAVSOC center at Pt Mugu, CA, regarding the Navy Ionospheric Monitoring Satellite (NIMS) satellites (the Oscar satellites). The number in parenthesis for each satellite is the Internation satellite ID number found on the standard two-line element (TLE) set ephemerides.

As of 16 April 2008

• Oscar 23 (19070): Operational frequencies
• Oscar 25 (19419): Operational frequencies
• Oscar 31 (19420): Maintenance frequencies (see Note 1)
• Oscar 32 (19071): Operational frequencies

• Operational frequencie set: 149.99800 MHz and 399.968 MHz
• Maintenance frequencie set: 149.97825 MHz and 399.942 MHz

NOTES:

1. We have not received data from Oscar 31 for several weeks. We are in the process of confirming that it is on the Maintenance frequency set.

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