AMC-4 (satellite)
Encyclopedia
AMC-4 or AMERICOM-4, formerly GE-4, is a Dutch
Netherlands
The Netherlands is a constituent country of the Kingdom of the Netherlands, located mainly in North-West Europe and with several islands in the Caribbean. Mainland Netherlands borders the North Sea to the north and west, Belgium to the south, and Germany to the east, and shares maritime borders...

, previously American
United States
The United States of America is a federal constitutional republic comprising fifty states and a federal district...

, commercial communications satellite
Communications satellite
A communications satellite is an artificial satellite stationed in space for the purpose of telecommunications...

.

AMC-4 was launched in 1999 as GE-4, GE Americom's fourth A2100
A2100
The A2100 is a communications satellite spacecraft made by Lockheed Martin Space Systems for telecommunications in geosynchronous orbit.The Lockheed Martin A2100 geosynchronous spacecraft series is designed for a variety of telecommunications needs including Ka band broadband and broadcast...

 hybrid C-band
C band
The C band is a name given to certain portions of the electromagnetic spectrum, including wavelengths of microwaves that are used for long-distance radio telecommunications. The IEEE C-band - and its slight variations - contains frequency ranges that are used for many satellite communications...

 and Ku-band
Ku band
The Kμ band is a portion of the electromagnetic spectrum in the microwave range of frequencies. This symbol refers to —in other words, the band directly below the K-band...

 satellite. The C-band payload was home to national television networks broadcasting to thousands of cable television headend
Cable television headend
A cable television headend is a master facility for receiving television signals for processing and distribution over a cable television system. The headend facility is normally unstaffed and surrounded by some type of security fencing and is typically a building or large shed housing electronic...

s. AMC-4's Ku-band transponders
Transponder (Satellite communications)
A communications satellite’s transponder, is the series of interconnected units which form a communications channel between the receiving and the transmitting antennas .A transponder is typically composed of:...

 served the direct-to-home
Direct broadcast satellite
Direct broadcast satellite is a term used to refer to satellite television broadcasts intended for home reception.A designation broader than DBS would be direct-to-home signals, or DTH. This has initially distinguished the transmissions directly intended for home viewers from cable television...

, VSAT, business television and broadband Internet market segments. These Ku-band transponders are designed to be switchable between North and South American coverages. It was renamed AMC-4 after GE Americom was bought by SES and re-branded SES Americom
SES Americom
SES Americom was a major commercial satellite operator based in the United States. Formerly RCA Americom and GE Americom, the company became one of the principal parts of SES S.A.....

. In 2009, SES Americom merged with SES New Skies to form SES World Skies. AMC-4 has been replaced by SES-1 in 2010. AMC-4 has been moved to 67° W, and currently has no FTA signals.

Transponder data

Transponders C band
C band
The C band is a name given to certain portions of the electromagnetic spectrum, including wavelengths of microwaves that are used for long-distance radio telecommunications. The IEEE C-band - and its slight variations - contains frequency ranges that are used for many satellite communications...

Ku band
Ku band
The Kμ band is a portion of the electromagnetic spectrum in the microwave range of frequencies. This symbol refers to —in other words, the band directly below the K-band...

Number of transponders & frequency 24 x 36 MHz 24 x 36 MHz; 4 x 72 MHz
Amp type SSPA, 20 watt
Watt
The watt is a derived unit of power in the International System of Units , named after the Scottish engineer James Watt . The unit, defined as one joule per second, measures the rate of energy conversion.-Definition:...

s
TWTA, 110 watt
Watt
The watt is a derived unit of power in the International System of Units , named after the Scottish engineer James Watt . The unit, defined as one joule per second, measures the rate of energy conversion.-Definition:...

s
Amp redundancy: 16 for 12 18 for 14
Receiver redundancy: 4 for 2 4 for 2
Coverage: Caribbean
Caribbean
The Caribbean is a crescent-shaped group of islands more than 2,000 miles long separating the Gulf of Mexico and the Caribbean Sea, to the west and south, from the Atlantic Ocean, to the east and north...

, Canada
Canada
Canada is a North American country consisting of ten provinces and three territories. Located in the northern part of the continent, it extends from the Atlantic Ocean in the east to the Pacific Ocean in the west, and northward into the Arctic Ocean...

, Central America
Central America
Central America is the central geographic region of the Americas. It is the southernmost, isthmian portion of the North American continent, which connects with South America on the southeast. When considered part of the unified continental model, it is considered a subcontinent...

, Mexico
Mexico
The United Mexican States , commonly known as Mexico , is a federal constitutional republic in North America. It is bordered on the north by the United States; on the south and west by the Pacific Ocean; on the southeast by Guatemala, Belize, and the Caribbean Sea; and on the east by the Gulf of...

, United States
United States
The United States of America is a federal constitutional republic comprising fifty states and a federal district...

Beacon: 3700.5 MHz (V), 4199.5 MHz (H) 11702 MHz (H), 12198 MHz (V)
Typical Footprint Frequency Plan

External links

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