Monday, July 19, 2010

Unidentified Milsatcom Link Popped Up - SkyNet 4D?

This morning I am monitoring an unknown foreign language comms on an apparent new milsatcom downlink for this area of the world. Not sure which satellite of who, so more monitoring is in the works. The new freq is 257.425 MHz nfm at 1440 UTC.

After doing some more checking with my satellite tracking program, the satellite that host this downlink is probably the UK Milsat SkyNet 4D.

NORAD ID: 25134
Int'l Code: 1998-002A
Perigee: 36,077.2 km
Apogee: 36,144.0 km
Inclination: 6.4°
Period: 1,452.3 min
Semi major axis: 42,481.6 km
Launch date: January 10, 1998
Source: United Kingdom (UK)
Comments: Skynet 4D was a British military geosynchronous communications satellite launched by a Delta 2 rocket from Cape Canaveral. The spacecraft was the first in the new series that is expected to replace the aging 1988-era series. The parking longitude was expected to be in western Europe.