Frequency Wavelength and Period - Revision history

TimVK4YEH at 08:05, 6 November 2010

2010-11-06T08:05:44Z

2010-11-06T08:01:47Z

Frequency

← Older revision		Revision as of 01:01, 6 November 2010
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	Frequency is the number of corresponding wave points (eg peaks) that pass a stationary point each second. The unit for this is Hertz (HZ) or cycles per second.		Frequency is the number of corresponding wave points (eg peaks) that pass a stationary point each second. The unit for this is Hertz (HZ) or cycles per second.

	1 KHz (Kilohertz) = 1000 Hz		* 1 KHz (Kilohertz) = 1000 Hz
	1 MHz (Megahertz) = 1 000 000 Hz		* 1 MHz (Megahertz) = 1 000 000 Hz
	1 GHz (Gigahertz = 1 000 000 000 Hz		* 1 GHz (Gigahertz = 1 000 000 000 Hz

	==Period==		==Period==

2010-11-06T08:01:06Z

added Khz MHz and GHz conversions

← Older revision		Revision as of 01:01, 6 November 2010
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	Frequency is the number of corresponding wave points (eg peaks) that pass a stationary point each second. The unit for this is Hertz (HZ) or cycles per second.		Frequency is the number of corresponding wave points (eg peaks) that pass a stationary point each second. The unit for this is Hertz (HZ) or cycles per second.

			1 KHz (Kilohertz) = 1000 Hz
			1 MHz (Megahertz) = 1 000 000 Hz
			1 GHz (Gigahertz = 1 000 000 000 Hz

	==Period==		==Period==

2010-11-06T07:58:23Z

fixed spelling

← Older revision		Revision as of 00:58, 6 November 2010
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	==What is a cyclic curve?==		==What is a cyclic curve?==

	Frequency, Wavelength and Period refer to cyclic (repeating) waveforms. In ham radio we usually deal with sinusoidal (shaped like a sine curve), but ~~may~~ other wave shapes are possible.		Frequency, Wavelength and Period refer to cyclic (repeating) waveforms. In ham radio we usually deal with sinusoidal (shaped like a sine curve), but many other repeating wave shapes are possible.

	[[Image:Vk4yeh_basic_sine_curve.jpg \| 500px]]		[[Image:Vk4yeh_basic_sine_curve.jpg \| 500px]]

2009-05-31T23:24:15Z

clarified some text

← Older revision		Revision as of 16:24, 31 May 2009
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	=== Period and Frequency ===		=== Period and Frequency ===

	Radiowaves are usually described by their frequency (or by their wavelength when identifying an amateur band) rather than their period. The relationship between period and frequency is that ~~period is the~~ reciprocal of ~~frequency~~:		Radiowaves are usually described by their frequency (or by their wavelength when identifying an amateur band) rather than their period. The relationship between period and frequency is that they are ther reciprocal of each other:

	<math> T = \frac {1}{f} </math> and		<math> T = \frac {1}{f} </math> and

2009-05-31T23:22:40Z

added info on period/freqency relationship

← Older revision		Revision as of 16:22, 31 May 2009
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	Period is the '''time''' taken for one complete cycle to pass a stationary point.		Period is the '''time''' taken for one complete cycle to pass a stationary point.

			=== Period and Frequency ===

			Radiowaves are usually described by their frequency (or by their wavelength when identifying an amateur band) rather than their period. The relationship between period and frequency is that period is the reciprocal of frequency:

			<math> T = \frac {1}{f} </math> and

			<math> f = \frac {1}{T} </math> where

			f = frequency in Hertz (Hz) and

			T = the period in seconds

			some comparisons between period and frequency are shown below.

			{\| class="wikitable"
			\|-
			! Frequency
			\| 1 mHz (10<sup>-3</sup>)
			\| 1 Hz (10<sup>0</sup>)
			\| 1 kHz (10<sup>3</sup>) \|\| 1 MHz (10<sup>6</sup>)
			\| 1 GHz (10<sup>9</sup>) \|\| 1 THz (10<sup>12</sup>)
			\|-
			! Period (time)
			\| 1 ks (10<sup>3</sup>)
			\| 1 s (10<sup>0</sup>)
			\| 1 ms (10<sup>-3</sup>) \|\| 1 µs (10<sup>-6</sup>)
			\| 1 ns (10<sup>-9</sup>) \|\| 1 ps (10<sup>-12</sup>)
			\|}

	==What are Harmonics?==		==What are Harmonics?==

2009-04-09T01:37:59Z

What are Harmonics?

2008-12-19T06:37:33Z

@@ Line 6: / Line 6: @@
 [[Image:Vk4yeh_basic_sine_curve.jpg | 500px]]
 ==Wavelength==
@@ Line 29: / Line 41: @@
 [[Image:Vk4yeh_harmonics.jpg |450px]]

2008-12-19T06:31:15Z

← Older revision		Revision as of 23:31, 18 December 2008
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	Related wiki pages : [[Modes]], [[Propagation]], [[Bands]], [[Harmonics]]		Related wiki pages : [[Modes]], [[Propagation]], [[Bands]], [[Harmonics]]

			==What is a cyclic curve?==

	Frequency, Wavelength and Period refer to cyclic (repeating) waveforms. In ham radio we usually deal with sinusoidal (shaped like a sine curve), but may other wave shapes are possible.		Frequency, Wavelength and Period refer to cyclic (repeating) waveforms. In ham radio we usually deal with sinusoidal (shaped like a sine curve), but may other wave shapes are possible.

	[[Image:Vk4yeh_basic_sine_curve.jpg \| 500px]]		[[Image:Vk4yeh_basic_sine_curve.jpg \| 500px]]


	==Wavelength==		==Wavelength==

2008-12-19T06:28:32Z

← Older revision		Revision as of 23:28, 18 December 2008
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	~~related~~ wiki pages : [[Modes]], [[Propagation]], [[Bands]], [[Harmonics]]		Related wiki pages : [[Modes]], [[Propagation]], [[Bands]], [[Harmonics]]


	Frequency, Wavelength and Period refer to cyclic (repeating) waveforms. In ham radio we usually deal with sinusoidal (shaped like a sine curve), but may other wave shapes are possible.		Frequency, Wavelength and Period refer to cyclic (repeating) waveforms. In ham radio we usually deal with sinusoidal (shaped like a sine curve), but may other wave shapes are possible.

	[[Image:Vk4yeh_basic_sine_curve.jpg \| ~~700px~~]]		[[Image:Vk4yeh_basic_sine_curve.jpg \| 500px]]


	==Wavelength==		==Wavelength==