Amateur radio
NORAD ID: 28375
Int'l Code: 2004-025K
Perigee: 702.8 km
Apogee: 824.1 km
Inclination: 98.1°
Period: 100.0 min
Semi major axis: 7,134.5 km
Launch date: June 29, 2004
Source: United States (US)
Comments: Amsat-Echo, also known as AMSAT Oscar-E or AO-51, is an American amateur communications microsatellite satellite (10 kg) that relays amateur transmissions. AO-51 contains an FM repeater with both a 144 MHz and 1.2 GHz uplink and 435 MHz and 2.4 GHz downlinks. Additionally AO-51 contains a digital subsystem that transmits TLM on 70cm and provides complete PACSAT BBS that can be configured on both V and S band uplinks. There is also a 10 meter PSK uplink.
Two Line Element Set (TLE):
1 28375U 04025K 09321.04043755 .00000022 00000-0 19268-4 0 5359
2 28375 098.0537 321.7572 0085055 021.5245 338.9488 14.40659097282963
More details about AMSAT ECHO
