Eyesat

USA

Also called AO-27 or Amrad or Oscar 27

Launch data:

Designation	22825 / 93061C
Launch date	25 Sep 1993
Launch site	Ko, ELA-2
Launch vehicle	Ariane-40 (V59)
Mission	Amateur communications
Perigee/Apogee	790/803 km
Inclination	98.7°
Period	100.8 min

AO-27 suspended in the clean room in final launch configuration

AO-27 on the ASAP ring just before launch

Aimed for transmiting data of localization and surveillance of industrial equipments for Interferometris.

Specifications:

Prime contractor	Associazione Radioamatori Italiani
Platform	Amsat-NA Microsat
Operator	Interferometrics (USA)
Mass at launch	12.5 kg
Mass in orbit
Length	230 mm
Width	230 mm
Height	235 mm
Stabilization	magnetic
DC power
Design lifetime	5-7 years

uses a method called Timed Eclipse Power Regulation (TEPR) to regulate the on-board batteries: TEPR times howlong the satellite has been in an eclipse (or in the sun) and decides what subsystems to turn on or off.

Frequency chart (MHz)

Uplink: 145.85 MHz FM
Downlink: 436.792 MHz FM

Ref.: #15 - update: 23.03.09

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