Most Popular Articles
XM Launches XM-4 Satellite
Washington - Oct 30, 2006 - XM Satellite Radio successfully launched its XM-4 satellite. Liftoff occurred at 6:49 p.m. ET on Oct. 30 from the Sea Launch Odyssey Launch Platform in the open waters of the Pacific Ocean on the equator. The XM-4 satellite was inserted directly into a geosynchronous transfer orbit, on its way to an orbital location for in-orbit testing prior to placement in its final orbital position at 115 degrees west longitude. A ground station in South Africa acquired the first signal from the satellite in orbit as planned.
Built by the Boeing Satellite Development Center, the XM-4 spacecraft carries a high-power S-band digital audio radio service (DARS) payload provided by Alcatel Alenia Space. It replaces two co-located XM satellites currently at 115 degrees. The XM-4 satellite will have 18kW of total power at the beginning of life on orbit. It is specified for a 15-year lifespan. This is Sea Launch's fourth successful launch for XM Satellite Radio, completing previous missions in March 2001, May 2001 and February 2005.
Acceptable Use Policy blog comments powered by Disqus
[an error occurred while processing this directive]
Today in Radio History
The history of radio broadcasting extends beyond the work of a few famous inventors.
EAS Information More on EAS
The feed provides feeds for all US states and territories.
Need a calendar for your computer desktop? Use one of ours.
Information from manufacturers and associations about industry news, products, technology and business announcements.
When Northern Community Radio set out to build a new community radio station in rural northern Minnesota 38 years ago, naysayers said that it would be broadcasting “only to a bunch of gophers
Browse Back Issues[an error occurred while processing this directive]
Also in the July Issue
- Trends in Technology: Robust IP STL
- LPFM on The March
- RF Engineering: Modern Modulation Techniques
- Field Report: Tascam TH-2000 Headphones
- Battery Maintenance: Testing and Charging