Morse code - Revision history

Moleski: /* Morse code vs. voice transmissions */

2011-01-16T13:54:48Z

Morse code vs. voice transmissions

← Older revision		Revision as of 13:54, 16 January 2011
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	As a general rule, '''Morse code''' has a much higher [http://en.wikipedia.org/wiki/Signal-to-noise_ratio signal-to-noise ratio] than [[Failure_to_communicate#Preference_for_voice_communication_.28telephony.29\|voice transmissions]]. The human ear can relatively easily distinguish between the dots, dashes, and silence that make up Morse code, even with a great deal of noise in the background; the range of sounds needed for producing intelligible speech is vastly greater than what is needed to produce intelligible code.		As a general rule, '''Morse code''' has a much higher [http://en.wikipedia.org/wiki/Signal-to-noise_ratio signal-to-noise ratio] than [[Failure_to_communicate#Preference_for_voice_communication_.28telephony.29\|voice transmissions]]. The human ear can relatively easily distinguish between the dots, dashes, and silence that make up Morse code, even with a great deal of noise in the background; the range of sounds needed for producing intelligible speech is vastly greater than what is needed to produce intelligible code.

	If [[Earhart]] and [[Noonan]] had been willing to buckle down and learn Morse code, they could have communicated with many more stations and at much greater distance than with voice communication. When they [[transmission timeline\|heard code on 7500 kcs]] via the [[loop antenna]], they could have received instructions from the ''[[Itasca]]'' about how to transmit long enough for a bearing to be taken and they then could have learned the right bearing to fly to reach [[Howland Island]].		If [[Earhart]] and [[Noonan]] had been willing to buckle down and learn '''Morse code,''' they could have communicated with many more stations and at much greater distance than with voice communication. When they [[transmission timeline\|heard code on 7500 kcs]] via the [[loop antenna]], they could have received instructions from the ''[[Itasca]]'' about how to transmit long enough for a bearing to be taken and they then could have learned the right bearing to fly to reach [[Howland Island]].

	<!-- Please leave this category marker at the bottom. You may add this article to other categories if you wish -->		<!-- Please leave this category marker at the bottom. You may add this article to other categories if you wish -->
	[[Category:Radio considerations]]		[[Category:Radio considerations]]

Moleski at 15:10, 1 August 2010

2010-08-01T15:10:00Z

← Older revision		Revision as of 15:10, 1 August 2010
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	and so on, with periodic interruptions for ''Itasca'' to insert its [[call sign]] into the transmission.		and so on, with periodic interruptions for ''Itasca'' to insert its [[call sign]] into the transmission.

			== Morse code vs. voice transmissions ==

			As a general rule, '''Morse code''' has a much higher [http://en.wikipedia.org/wiki/Signal-to-noise_ratio signal-to-noise ratio] than [[Failure_to_communicate#Preference_for_voice_communication_.28telephony.29\|voice transmissions]]. The human ear can relatively easily distinguish between the dots, dashes, and silence that make up Morse code, even with a great deal of noise in the background; the range of sounds needed for producing intelligible speech is vastly greater than what is needed to produce intelligible code.

			If [[Earhart]] and [[Noonan]] had been willing to buckle down and learn Morse code, they could have communicated with many more stations and at much greater distance than with voice communication. When they [[transmission timeline\|heard code on 7500 kcs]] via the [[loop antenna]], they could have received instructions from the ''[[Itasca]]'' about how to transmit long enough for a bearing to be taken and they then could have learned the right bearing to fly to reach [[Howland Island]].

	<!-- Please leave this category marker at the bottom. You may add this article to other categories if you wish -->		<!-- Please leave this category marker at the bottom. You may add this article to other categories if you wish -->
	[[Category:Radio considerations]]		[[Category:Radio considerations]]

Moleski at 14:47, 1 August 2010

2010-08-01T14:47:29Z

← Older revision		Revision as of 14:47, 1 August 2010
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	Morse code can be used in any medium that allows discriminating between dots and dashes (electrical lines, radio waves, pulses of light, tapping on resonant objects, etc.).		Morse code can be used in any medium that allows discriminating between dots and dashes (electrical lines, radio waves, pulses of light, tapping on resonant objects, etc.).

	The discussion in the Ameliapedia is concerned with Morse code carried on [[continuous wave]] (CW) or [[~~modified~~ continuous wave]] (MCW) radio transmissions. Where the sources refer to CW or MCW without other qualification, they generally mean "Morse code transmitted on continuous wave" or "modified continuous wave."		The discussion in the Ameliapedia is concerned with Morse code carried on [[continuous wave]] (CW) or [[modulated continuous wave]] (MCW) radio transmissions. Where the sources refer to CW or MCW without other qualification, they generally mean "Morse code transmitted on continuous wave" or "modified continuous wave."

	When Earhart asked the ''Itasca'' to transmit the letter A (.-) repeatedly, what she would have heard was this:		When Earhart asked the ''Itasca'' to transmit the letter A (.-) repeatedly, what she would have heard was this:

Moleski at 14:46, 1 August 2010

2010-08-01T14:46:31Z

← Older revision		Revision as of 14:46, 1 August 2010
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	The discussion in the Ameliapedia is concerned with Morse code carried on [[continuous wave]] (CW) or [[modified continuous wave]] (MCW) radio transmissions. Where the sources refer to CW or MCW without other qualification, they generally mean "Morse code transmitted on continuous wave" or "modified continuous wave."		The discussion in the Ameliapedia is concerned with Morse code carried on [[continuous wave]] (CW) or [[modified continuous wave]] (MCW) radio transmissions. Where the sources refer to CW or MCW without other qualification, they generally mean "Morse code transmitted on continuous wave" or "modified continuous wave."

	When Earhart asked the ''Itasca'' to transmit the letter A (.-) repeatedly, what she would heard was this:		When Earhart asked the ''Itasca'' to transmit the letter A (.-) repeatedly, what she would have heard was this:

	.- .- .- .- .- .- .- .- .- .- .- .- .- .- .- .- .- .- .- .- .- .- .-		.- .- .- .- .- .- .- .- .- .- .- .- .- .- .- .- .- .- .- .- .- .- .-

Moleski at 01:04, 24 February 2009

2009-02-24T01:04:53Z

← Older revision		Revision as of 01:04, 24 February 2009
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	Morse code can be used in any medium that allows discriminating between dots and dashes (electrical lines, radio waves, pulses of light, tapping on resonant objects, etc.).		Morse code can be used in any medium that allows discriminating between dots and dashes (electrical lines, radio waves, pulses of light, tapping on resonant objects, etc.).

	The discussion in the Ameliapedia is concerned with Morse code carried on [[continuous wave]] (CW) or [[modified continuous wave]] (MCW) radio transmissions.		The discussion in the Ameliapedia is concerned with Morse code carried on [[continuous wave]] (CW) or [[modified continuous wave]] (MCW) radio transmissions. Where the sources refer to CW or MCW without other qualification, they generally mean "Morse code transmitted on continuous wave" or "modified continuous wave."

	When Earhart asked the ''Itasca'' to transmit the letter A (.-) repeatedly, what she would heard was this:		When Earhart asked the ''Itasca'' to transmit the letter A (.-) repeatedly, what she would heard was this:

Moleski at 01:02, 24 February 2009

2009-02-24T01:02:29Z

← Older revision		Revision as of 01:02, 24 February 2009
Line 3:		Line 3:
	Morse code can be used in any medium that allows discriminating between dots and dashes (electrical lines, radio waves, pulses of light, tapping on resonant objects, etc.).		Morse code can be used in any medium that allows discriminating between dots and dashes (electrical lines, radio waves, pulses of light, tapping on resonant objects, etc.).

	The discussion in the Ameliapedia is concerned with Morse code carried on [[continuous wave]] (CW) or modified continuous wave ~~radios~~.		The discussion in the Ameliapedia is concerned with Morse code carried on [[continuous wave]] (CW) or [[modified continuous wave]] (MCW) radio transmissions.

	When Earhart asked the ''Itasca'' to transmit the letter A (.-) repeatedly, what she would heard was this:		When Earhart asked the ''Itasca'' to transmit the letter A (.-) repeatedly, what she would heard was this:
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	and so on, with periodic interruptions for ''Itasca'' to insert its [[call sign]] into the transmission.		and so on, with periodic interruptions for ''Itasca'' to insert its [[call sign]] into the transmission.

			<!-- Please leave this category marker at the bottom. You may add this article to other categories if you wish -->
			[[Category:Radio considerations]]

Moleski: New page: "Morse code is a type of character encoding that transmits telegraphic information using rhythm. Morse code uses a standardized sequence of short and long elements to represent the letters...

2009-02-23T05:45:55Z

New page: "Morse code is a type of character encoding that transmits telegraphic information using rhythm. Morse code uses a standardized sequence of short and long elements to represent the letters...

New page

"Morse code is a type of character encoding that transmits telegraphic information using rhythm. Morse code uses a standardized sequence of short and long elements to represent the letters, numerals, punctuation and special characters of a given message. The short and long elements can be formed by sounds, marks, or pulses, in on off keying and are commonly known as 'dots' and 'dashes' or 'dits' and 'dahs'" [http://en.wikipedia.org/wiki/Morse_code (Wikipedia).]

Morse code can be used in any medium that allows discriminating between dots and dashes (electrical lines, radio waves, pulses of light, tapping on resonant objects, etc.).

The discussion in the Ameliapedia is concerned with Morse code carried on [[continuous wave]] (CW) or modified continuous wave radios.

When Earhart asked the ''Itasca'' to transmit the letter A (.-) repeatedly, what she would heard was this:

.- .- .- .- .- .- .- .- .- .- .- .- .- .- .- .- .- .- .- .- .- .- .-

and so on, with periodic interruptions for ''Itasca'' to insert its [[call sign]] into the transmission.