Satellite - Revision history

TheAnarcat: /* Other lists of satellites */

2010-10-11T02:45:27Z

Other lists of satellites

← Older revision		Revision as of 19:45, 10 October 2010
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	* [[WikiPedia:OSCAR]]		* [[WikiPedia:OSCAR]]
	* [[WikiPedia:Category:Amateur_radio_satellites]]		* [[WikiPedia:Category:Amateur_radio_satellites]]
	* [http://www.amsat.org/amsat-new/satellites/status.php AMSAT status page]]		* [http://www.amsat.org/amsat-new/satellites/status.php AMSAT status page]
	* [http://www.amsat.org/amsat-new/satellites/frequencies.php?opOnly AMSAT frequency listing page]		* [http://www.amsat.org/amsat-new/satellites/frequencies.php?opOnly AMSAT frequency listing page]

TheAnarcat at 05:48, 3 October 2010

2010-10-03T05:48:46Z

← Older revision		Revision as of 22:48, 2 October 2010
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	So far, AMSAT-originated amateur radio satellites have been active in two orbit configurations known as HEO (High Earth Orbit) and LEO (Low Earth Orbit).		So far, AMSAT-originated amateur radio satellites have been active in two orbit configurations known as HEO (High Earth Orbit) and LEO (Low Earth Orbit).
	Generally speaking, HEO's are geo-synchronous or geo-stationary, that is they seem to stay in the same position with respect to an earth-based observer's viewpoint. LEO's will have relatively rapid "passes" that will appear as if they come from different directions and at varying times. This appearance is because both of their orbital paths and earth's rotation. Note that while there's been much interest in placing a HEO amateur satellite, none so far is operational.<ref name="RASH">{{cite book \| title=The Radio Amateur's Satellite Handbook \| publisher=The Amateur Radio Relay League \| pages=2–1 \| author=Martin Davidoff, K2UBC \| year=2000 \| isbn=0-87259-658-3}}</ref>		Generally speaking, HEO's are geo-synchronous or geo-stationary, that is they seem to stay in the same position with respect to an earth-based observer's viewpoint. LEO's will have relatively rapid "passes" that will appear as if they come from different directions and at varying times. This appearance is because both of their orbital paths and earth's rotation. Note that while there's been much interest in placing a HEO amateur satellite, none so far is operational.

	== Operation recommendations ==		== Operation recommendations ==
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	* [[SO50]] Saudi Oscar 50		* [[SO50]] Saudi Oscar 50
	* [[FO29]] Fuji Oscar		* [[FO29]] Fuji Oscar

			== Other lists of satellites ==

			* [[WikiPedia:OSCAR]]
			* [[WikiPedia:Category:Amateur_radio_satellites]]
			* [http://www.amsat.org/amsat-new/satellites/status.php AMSAT status page]]
			* [http://www.amsat.org/amsat-new/satellites/frequencies.php?opOnly AMSAT frequency listing page]

	==Tracking ham radio satellites==		==Tracking ham radio satellites==
			* [http://oscar.dcarr.org/ Live OSCAR status page] - gives reports of when satellites were last heard from operators, by KD5QGR
	* [http://science.nasa.gov/Realtime/jtrack/Amateur.html J-Track] from NASA		* [http://science.nasa.gov/Realtime/jtrack/Amateur.html J-Track] from NASA
	* [http://www.n2yo.com/satellites/?c=18 Real time satellite tracking] from N2YO		* [http://www.n2yo.com/satellites/?c=18 Real time satellite tracking] from N2YO

TheAnarcat: link to wikipedia's excellent pages

2010-10-03T03:31:39Z

link to wikipedia's excellent pages

← Older revision		Revision as of 20:31, 2 October 2010
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	So far, AMSAT-originated amateur radio satellites have been active in two orbit configurations known as HEO (High Earth Orbit) and LEO (Low Earth Orbit).		So far, AMSAT-originated amateur radio satellites have been active in two orbit configurations known as HEO (High Earth Orbit) and LEO (Low Earth Orbit).
	Generally speaking, HEO's are geo-synchronous or geo-stationary ~~(seeming~~ to stay in the same position with respect to an earth-based observer's viewpoint~~) while~~ LEO's will have relatively rapid "passes" that will appear as if they come from different directions and at varying times. This appearance is because both of their orbital paths and earth's rotation.		Generally speaking, HEO's are geo-synchronous or geo-stationary, that is they seem to stay in the same position with respect to an earth-based observer's viewpoint. LEO's will have relatively rapid "passes" that will appear as if they come from different directions and at varying times. This appearance is because both of their orbital paths and earth's rotation. Note that while there's been much interest in placing a HEO amateur satellite, none so far is operational.<ref name="RASH">{{cite book \| title=The Radio Amateur's Satellite Handbook \| publisher=The Amateur Radio Relay League \| pages=2–1 \| author=Martin Davidoff, K2UBC \| year=2000 \| isbn=0-87259-658-3}}</ref>

	== Operation recommendations ==		== Operation recommendations ==
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	* [http://www.amsat.org/amsat-new/tools/predict/ AMSAT Predict]		* [http://www.amsat.org/amsat-new/tools/predict/ AMSAT Predict]

	== ~~Related wiki pages~~ ==		== See also ==

	* [[Modes]]		* [[Modes]]
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	* [[Antennas]]		* [[Antennas]]

			== External links ==

			* [[Wikipedia:AMSAT]]
			* [[Wikipedia:OSCAR]]

	{{satellites}}		{{satellites}}
	{{propagation}}		{{propagation}}

TheAnarcat at 01:17, 3 October 2010

2010-10-03T01:17:52Z

← Older revision		Revision as of 18:17, 2 October 2010
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	~~A number of Radio Amateur satellites have been launched, operated, and reached end of life.~~		An amateur radio satellite is a little like a [[repeater]] in space, a station that relays signal over a broad territory because of the height of the transmitter.
	~~A number of them are still usable, some even multiple times~~ a ~~day.~~
	~~There new ones under development, particularly through AMSAT, The Radio Amateur Satellite Corporation (~~a ~~non-profit organization), see~~ [~~http://www.amsat.org/amsat-new/index.php AMSAT.org~~], ~~which has groups coordinated by primarily nation representation, e.g. AMSAT-DL for Germany and~~ a ~~goo dportion~~ of ~~Europe, AMSAT-UK, AMSAT-NA, etc~~.

	~~You may envision a satellite as~~ a [[~~repeater~~]] ~~in the sky~~.		A number of Radio Amateur satellites have been launched, operated, and reached end of life. A number of them are still usable, some even multiple times a day. There are new ones under development, particularly through [[AMSAT]].

	Amateur radio satellites will vary by the bands they use/make available, modes, and orbital characteristics.		Amateur radio satellites will vary by the bands they use/make available, modes, and orbital characteristics.
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	Typical configurations include uplink communications (signals TO the satellite) being on separate bands from downlink communications (signals FROM the satellite). This is done to achieve isolation between the signals, as is done on earth by separating a repeater's receive and transmit frequencies.		Typical configurations include uplink communications (signals TO the satellite) being on separate bands from downlink communications (signals FROM the satellite). This is done to achieve isolation between the signals, as is done on earth by separating a repeater's receive and transmit frequencies.

	The modes a satellite operates in will vary by design and in some cases can be changed by control stations.		The modes a satellite operates in will vary by design and in some cases can be changed by control stations. Common modes include [[FM]] (voice), [[sideband]] (voice), and [[digital]].
	Common modes include FM (voice), sideband (voice), and digital.

	Some digital-capable satellites may operate in a "store and forward" mode instead of immediately reflecting or repeating what they "hear".		Some digital-capable satellites may operate in a "store and forward" mode instead of immediately reflecting or repeating what they "hear".

TheAnarcat at 23:29, 2 October 2010

2010-10-02T23:29:03Z

← Older revision		Revision as of 16:29, 2 October 2010
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	There new ones under development, particularly through AMSAT, The Radio Amateur Satellite Corporation (a non-profit organization), see [http://www.amsat.org/amsat-new/index.php AMSAT.org], which has groups coordinated by primarily nation representation, e.g. AMSAT-DL for Germany and a goo dportion of Europe, AMSAT-UK, AMSAT-NA, etc.		There new ones under development, particularly through AMSAT, The Radio Amateur Satellite Corporation (a non-profit organization), see [http://www.amsat.org/amsat-new/index.php AMSAT.org], which has groups coordinated by primarily nation representation, e.g. AMSAT-DL for Germany and a goo dportion of Europe, AMSAT-UK, AMSAT-NA, etc.

	You may envision a satellite as a repeater in the sky.		You may envision a satellite as a [[repeater]] in the sky.

	Amateur radio satellites will vary by the bands they use/make available, modes, and orbital characteristics.		Amateur radio satellites will vary by the bands they use/make available, modes, and orbital characteristics.

TheAnarcat: move related pages to end

2010-10-02T21:45:48Z

move related pages to end

← Older revision		Revision as of 14:45, 2 October 2010
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	~~Related wiki pages: [[Modes]], [[Apparatus]], [[Antennas]]~~

	A number of Radio Amateur satellites have been launched, operated, and reached end of life.		A number of Radio Amateur satellites have been launched, operated, and reached end of life.
	A number of them are still usable, some even multiple times a day.		A number of them are still usable, some even multiple times a day.
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	* [http://heavens-above.com/ Heavens Above]		* [http://heavens-above.com/ Heavens Above]
	* [http://www.amsat.org/amsat-new/tools/predict/ AMSAT Predict]		* [http://www.amsat.org/amsat-new/tools/predict/ AMSAT Predict]

			== Related wiki pages ==

			* [[Modes]]
			* [[Apparatus]]
			* [[Antennas]]


	{{satellites}}		{{satellites}}
	{{propagation}}		{{propagation}}

TheAnarcat: make the intro more punchy

2010-10-02T21:45:14Z

make the intro more punchy

← Older revision		Revision as of 14:45, 2 October 2010
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	A number of them are still usable, some even multiple times a day.		A number of them are still usable, some even multiple times a day.
	There new ones under development, particularly through AMSAT, The Radio Amateur Satellite Corporation (a non-profit organization), see [http://www.amsat.org/amsat-new/index.php AMSAT.org], which has groups coordinated by primarily nation representation, e.g. AMSAT-DL for Germany and a goo dportion of Europe, AMSAT-UK, AMSAT-NA, etc.		There new ones under development, particularly through AMSAT, The Radio Amateur Satellite Corporation (a non-profit organization), see [http://www.amsat.org/amsat-new/index.php AMSAT.org], which has groups coordinated by primarily nation representation, e.g. AMSAT-DL for Germany and a goo dportion of Europe, AMSAT-UK, AMSAT-NA, etc.

			You may envision a satellite as a repeater in the sky.

	Amateur radio satellites will vary by the bands they use/make available, modes, and orbital characteristics.		Amateur radio satellites will vary by the bands they use/make available, modes, and orbital characteristics.

			== Modes of operation ==

	Typical configurations include uplink communications (signals TO the satellite) being on separate bands from downlink communications (signals FROM the satellite). This is done to achieve isolation between the signals, as is done on earth by separating a repeater's receive and transmit frequencies.		Typical configurations include uplink communications (signals TO the satellite) being on separate bands from downlink communications (signals FROM the satellite). This is done to achieve isolation between the signals, as is done on earth by separating a repeater's receive and transmit frequencies.

	~~You may envision a satellite as a repeater in the sky.~~

	The modes a satellite operates in will vary by design and in some cases can be changed by control stations.		The modes a satellite operates in will vary by design and in some cases can be changed by control stations.
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	Generally speaking, HEO's are geo-synchronous or geo-stationary (seeming to stay in the same position with respect to an earth-based observer's viewpoint) while LEO's will have relatively rapid "passes" that will appear as if they come from different directions and at varying times. This appearance is because both of their orbital paths and earth's rotation.		Generally speaking, HEO's are geo-synchronous or geo-stationary (seeming to stay in the same position with respect to an earth-based observer's viewpoint) while LEO's will have relatively rapid "passes" that will appear as if they come from different directions and at varying times. This appearance is because both of their orbital paths and earth's rotation.

	== ~~General satellite operation~~ ==		== Operation recommendations ==

	* Don't overload the receiver. Satellites are short on power - often their solar-panels are damaged, facing the wrong way, batteries are not working properly, etc. This means that they don't transmit a lot of power. If it's a transponder, and you blast it with lots of power, you'll affect other stations working through it.		* Don't overload the receiver. Satellites are short on power - often their solar-panels are damaged, facing the wrong way, batteries are not working properly, etc. This means that they don't transmit a lot of power. If it's a transponder, and you blast it with lots of power, you'll affect other stations working through it.

Hardaker: Undo revision 4142 by Maychill101 (Talk) rm spam

2010-04-12T13:32:48Z

Undo revision 4142 by Maychill101 (Talk) rm spam

← Older revision		Revision as of 06:32, 12 April 2010
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	{{satellites}}		{{satellites}}
	{{propagation}}		{{propagation}}


	~~Related Link:~~

	~~[http://www.4solarpanels.com '''Solar systems''']~~

Maychill101 at 00:43, 12 April 2010

2010-04-12T00:43:03Z

← Older revision		Revision as of 17:43, 11 April 2010
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	{{satellites}}		{{satellites}}
	{{propagation}}		{{propagation}}


			Related Link:

			[http://www.4solarpanels.com '''Solar systems''']

Carlb: Satellites moved to Satellite

2009-09-19T08:32:21Z

Satellites moved to Satellite

← Older revision	Revision as of 01:32, 19 September 2009
(No difference)