Slow-Scan Television (SSTV) - Revision history

TimVK4YEH: new page

2009-07-10T20:37:20Z

new page

← Older revision		Revision as of 13:37, 10 July 2009
Line 10:		Line 10:

	SSTV should not be confused with amateur [[Fast-Scan Television (ATV)\|Fast-Scan Television]], often simply called Amateur Television or ATV.		SSTV should not be confused with amateur [[Fast-Scan Television (ATV)\|Fast-Scan Television]], often simply called Amateur Television or ATV.

			[[K3UK's Quick and Dirty Guide to Narrow Bandwidth SSTV]]


	== SSTV History ==		== SSTV History ==

Carlb: /* SSTV with a Macintosh computer */

2009-04-09T18:07:53Z

SSTV with a Macintosh computer

← Older revision		Revision as of 11:07, 9 April 2009
Line 92:		Line 92:

	'''Setup''' Two monitors were used in this setup. Macrobot proved to be much easier to use for TX, whereas Multimode proved to be better for RX. This is because Macrobot did not seem to be as sensitive to weak signals and so RX detection stopped when the signals varied in strength. This problem was never resolved by the writer, hence the use of both software programs. The TX interface and setup in Multimode was not found to be as easy to use as for Macrobot.		'''Setup''' Two monitors were used in this setup. Macrobot proved to be much easier to use for TX, whereas Multimode proved to be better for RX. This is because Macrobot did not seem to be as sensitive to weak signals and so RX detection stopped when the signals varied in strength. This problem was never resolved by the writer, hence the use of both software programs. The TX interface and setup in Multimode was not found to be as easy to use as for Macrobot.


			{{modes}}

TimVK4YEH: external link

2008-07-02T23:08:17Z

external link

← Older revision		Revision as of 16:08, 2 July 2008
Line 1:		Line 1:
	Related wiki pages: [[Fast-Scan Television (ATV)]], [[SSTV frequencies]], [[Modes]]		Related wiki pages: [[Fast-Scan Television (ATV)]], [[SSTV frequencies]], [[Modes]]

	SSTV is a mode that uses a computer and an amateur radio transceiver to send and receive still images over radio. SSTV was originally an analogue mode based on Frequency Modulation (FM). Digital SSTV has become possible with little trouble in recent times with the use of Digital Radio Mondiale (DRM). Despite the name "television", SSTV cannot send or receive moving pictures; it is more akin to sending a FAX.		[http://en.wikipedia.org/wiki/Slow-scan_television SSTV] is a mode that uses a computer and an amateur radio transceiver to send and receive still images over radio. SSTV was originally an analogue mode based on Frequency Modulation (FM). Digital SSTV has become possible with little trouble in recent times with the use of Digital Radio Mondiale (DRM). Despite the name "television", SSTV cannot send or receive moving pictures; it is more akin to sending a FAX.

	For SSTV to work, an image is "broken" into lines, composed of dots of colour and light intensity known as pixels. Each pixel is given a specific audio frequency ( that modulates the carrier) depending on its brightness. In a colour image, each of the primary colours, red green and blue are analysed for brightness.		For SSTV to work, an image is "broken" into lines, composed of dots of colour and light intensity known as pixels. Each pixel is given a specific audio frequency ( that modulates the carrier) depending on its brightness. In a colour image, each of the primary colours, red green and blue are analysed for brightness.

TimVK4YEH: intrnal links

2008-07-02T23:06:08Z

intrnal links

← Older revision		Revision as of 16:06, 2 July 2008
Line 1:		Line 1:
	Related wiki pages: [[Fast-Scan Television (ATV)]], [[Modes]]		Related wiki pages: [[Fast-Scan Television (ATV)]], [[SSTV frequencies]], [[Modes]]

	SSTV is a mode that uses a computer and an amateur radio transceiver to send and receive still images over radio. SSTV was originally an analogue mode based on Frequency Modulation (FM). Digital SSTV has become possible with little trouble in recent times with the use of Digital Radio Mondiale (DRM). Despite the name "television", SSTV cannot send or receive moving pictures; it is more akin to sending a FAX.		SSTV is a mode that uses a computer and an amateur radio transceiver to send and receive still images over radio. SSTV was originally an analogue mode based on Frequency Modulation (FM). Digital SSTV has become possible with little trouble in recent times with the use of Digital Radio Mondiale (DRM). Despite the name "television", SSTV cannot send or receive moving pictures; it is more akin to sending a FAX.

TimVK4YEH: internal links

2008-07-02T22:33:07Z

internal links

← Older revision		Revision as of 15:33, 2 July 2008
Line 1:		Line 1:
			Related wiki pages: [[Fast-Scan Television (ATV)]], [[Modes]]

	SSTV is a mode that uses a computer and an amateur radio transceiver to send and receive still images over radio. SSTV was originally an analogue mode based on Frequency Modulation (FM). Digital SSTV has become possible with little trouble in recent times with the use of Digital Radio Mondiale (DRM). Despite the name "television", SSTV cannot send or receive moving pictures; it is more akin to sending a FAX.		SSTV is a mode that uses a computer and an amateur radio transceiver to send and receive still images over radio. SSTV was originally an analogue mode based on Frequency Modulation (FM). Digital SSTV has become possible with little trouble in recent times with the use of Digital Radio Mondiale (DRM). Despite the name "television", SSTV cannot send or receive moving pictures; it is more akin to sending a FAX.

YL: Minor syntax tweak

2008-04-02T00:49:45Z

Minor syntax tweak

← Older revision		Revision as of 17:49, 1 April 2008
Line 56:		Line 56:
	== SSTV Software ==		== SSTV Software ==

	Related wiki page [[~~SSTV_software\|~~SSTV software]]		Related wiki page [[SSTV software]]

	* [http://mmhamsoft.amateur-radio.ca/mmsstv/ MMSSTV] for windows computers. A versatile and easy to use program. It can handle all the common modes, but users have access to a number of lesser used modes such as [http://www.obriensweb.com/narrowsstv.htm MP73-N] which is allowing amateurs to use sstv on the 30m band where previously it was restricted by band definitions.		* [http://mmhamsoft.amateur-radio.ca/mmsstv/ MMSSTV] for windows computers. A versatile and easy to use program. It can handle all the common modes, but users have access to a number of lesser used modes such as [http://www.obriensweb.com/narrowsstv.htm MP73-N] which is allowing amateurs to use sstv on the 30m band where previously it was restricted by band definitions.

Redhatter: /* SSTV Software */ Minor syntax tweak

2008-04-01T04:14:17Z

SSTV Software: Minor syntax tweak

← Older revision		Revision as of 21:14, 31 March 2008
Line 56:		Line 56:
	== SSTV Software ==		== SSTV Software ==

	Related wiki page [[~~http://amateur-radio-wiki.net/index.php?title=~~SSTV_software SSTV software]]		Related wiki page [[SSTV_software\|SSTV software]]

	* [http://mmhamsoft.amateur-radio.ca/mmsstv/ MMSSTV] for windows computers. A versatile and easy to use program. It can handle all the common modes, but users have access to a number of lesser used modes such as [http://www.obriensweb.com/narrowsstv.htm MP73-N] which is allowing amateurs to use sstv on the 30m band where previously it was restricted by band definitions.		* [http://mmhamsoft.amateur-radio.ca/mmsstv/ MMSSTV] for windows computers. A versatile and easy to use program. It can handle all the common modes, but users have access to a number of lesser used modes such as [http://www.obriensweb.com/narrowsstv.htm MP73-N] which is allowing amateurs to use sstv on the 30m band where previously it was restricted by band definitions.

YL at 22:19, 31 March 2008

2008-03-31T22:19:50Z

YL: Added reference to Fast-Scan Television.

2008-03-13T21:56:49Z

Added reference to Fast-Scan Television.

← Older revision		Revision as of 14:56, 13 March 2008
Line 6:		Line 6:

	The colour and brightness information modulates a carrier wave for transmission. A remote station picks up the signal and a computer is used to re-create the picture from the FM signal.		The colour and brightness information modulates a carrier wave for transmission. A remote station picks up the signal and a computer is used to re-create the picture from the FM signal.

			SSTV should not be confused with amateur [[Fast-Scan Television (ATV)\|Fast-Scan Television]], often simply called Amateur Television or ATV.

	== SSTV History ==		== SSTV History ==

TimVK4YEH: spelling error

2008-03-13T06:16:36Z

spelling error

← Older revision		Revision as of 23:16, 12 March 2008
Line 1:		Line 1:

	SSTV is a mode that uses a computer and an amateur radio transceiver to send and receive images over radio. SSTV was originally an analogue mode based on Frequency Modulation (FM). Digital SSTV has become possible with little trouble in recent times with the use of Digital Radio Mondiale (DRM).		SSTV is a mode that uses a computer and an amateur radio transceiver to send and receive images over radio. SSTV was originally an analogue mode based on Frequency Modulation (FM). Digital SSTV has become possible with little trouble in recent times with the use of Digital Radio Mondiale (DRM).

Line 49:		Line 48:
	Brief details of scan time, lines and colour transmission of some modes can be found on this[[SSTV Modes]] wiki page.		Brief details of scan time, lines and colour transmission of some modes can be found on this[[SSTV Modes]] wiki page.

	== SSTV Nets and ~~Frequenies~~ ==		== SSTV Nets and Frequencies ==

	Click here [[SSTV frequencies]] for an up-to date list		Click here [[SSTV frequencies]] for an up-to date list

← Older revision		Revision as of 15:19, 31 March 2008
Line 1:		Line 1:
	SSTV is a mode that uses a computer and an amateur radio transceiver to send and receive images over radio. SSTV was originally an analogue mode based on Frequency Modulation (FM). Digital SSTV has become possible with little trouble in recent times with the use of Digital Radio Mondiale (DRM).		SSTV is a mode that uses a computer and an amateur radio transceiver to send and receive still images over radio. SSTV was originally an analogue mode based on Frequency Modulation (FM). Digital SSTV has become possible with little trouble in recent times with the use of Digital Radio Mondiale (DRM). Despite the name "television", SSTV cannot send or receive moving pictures; it is more akin to sending a FAX.

	For SSTV to work, an image is "broken" into lines, composed of dots of colour and light intensity known as pixels. Each pixel is given a specific audio frequency ( that modulates the carrier) depending on its brightness. In a colour image, each of the primary colours, red green and blue are analysed for brightness.		For SSTV to work, an image is "broken" into lines, composed of dots of colour and light intensity known as pixels. Each pixel is given a specific audio frequency ( that modulates the carrier) depending on its brightness. In a colour image, each of the primary colours, red green and blue are analysed for brightness.
Line 12:		Line 12:

	* 1957 - Copthorn Macdonald develops the fundamental concepts behind SSTV		* 1957 - Copthorn Macdonald develops the fundamental concepts behind SSTV
	* 1958 - ~~the first~~ Electrostatic P7 monitor built by Macdonald		* 1958 - First Electrostatic P7 monitor built by Macdonald
	* 1958 - Macdonald creates the first SSTV Camera using special Westinghouse 7290 vidicon		* 1958 - Macdonald creates the first SSTV Camera using special Westinghouse 7290 vidicon
	* 1960 - ~~The~~ FCC Grants a Special Temporary Authorization (STA) to send SSTVG~~. this was~~ limited to those who Macdonald had given 7290 vidicons		* 1960 - FCC Grants a Special Temporary Authorization (STA) to send SSTVG in the USA, limited to those who Macdonald had given 7290 vidicons
	* 1967 - ~~The magnetic~~ Deflection, transistorized P7 monitor was developed		* 1967 - Magnetic Deflection, transistorized P7 monitor was developed
	* 1968 - WB8DQT & K7YZZ develop and build the "Flying Spot Scanner"		* 1968 - WB8DQT & K7YZZ develop and build the "Flying Spot Scanner"
	* 1968 - SSTV with standard vidicons, WB8DQT, K7YZZ		* 1968 - SSTV with standard vidicons, WB8DQT, K7YZZ
	* 1968 - ~~the~~ FCC makes SSTV legal or advanced class hams (USA).		* 1968 - FCC makes SSTV legal for advanced class hams (USA).
	* 1969 - W9NTP builds the sampling camera		* 1969 - W9NTP builds the sampling camera
	* 1970 - W7FEN uses Double Sideband SSTV providing simultaneous voice and SSTV by (~~Voice~~ on lower sideband ~~(sstv~~ on upper sideband) for the first time		* 1970 - W7FEN uses [[Modes#Double-Sideband Modulation (DSB)\|double sideband]] SSTV providing simultaneous voice and SSTV (voice on lower sideband, SSTV on upper sideband) for the first time
	* 1970 - WB8DQT, W2DD send the first color SSTV pictures using Polaroid camera, RGB filters and Py monitors -		* 1970 - WB8DQT, W2DD send the first color SSTV pictures using Polaroid camera, RGB filters and Py monitors -
	* 1970 - ~~the first~~ commercial SSTV system with Robot 70 monitor & Robot 80 camera		* 1970 - First commercial SSTV system with Robot 70 monitor & Robot 80 camera
	* 1971 - W7ABW uses plumbicons from TV stations for the SSTV camera		* 1971 - W7ABW uses plumbicons from TV stations for the SSTV camera
	* 1972 - W0LMD builds the first SSTV keyboard integrated circuit unit		* 1972 - W0LMD builds the first SSTV keyboard integrated circuit unit