28375 - OSCAR-E

AMSAT-ECHO, also known as AMSAT-OSCAR-E, is an American amateur communications microsatellite satellite (10 kg) that will relay amateur transmissions. It was launched by a Dnieper booster from Baikonur at 07:45 UT on 2004 June 29. The initial orbital parameters were period 100 min, apogee 817 km, perigee 697 km, and inclination 98.3 deg.

Amsat contains an FM repeater with both a 144 MHz and 1.2 GHz uplink and 435 MHz and 2.4 GHz downlinks. Additionally it contains a digital subsystem that transmits TLM on 70 cm and provides complete PACSAT BBS that can be configured on both V and S band uplinks. There is also a 10 meter PSK uplink.

Amsat has four VHF receivers, two UHF transmitters, six modems, 56 channels of telemetry. The two UHF transmitters are conneced to four antennas, two in right-hand circular polarization and two in left-hand circular polarization.

Alternate Names

Echo
OSCAR 51
OSCAR-E

Facts in Brief

Launch Date: 2004-06-29
Launch Vehicle: Dnepr
Launch Site: Tyuratam (Baikonur Cosmodrome), Kazakhstan
Mass: 11.14 kg