F - Revision history

TimVK4YEH: added info and link

2009-11-16T01:35:38Z

added info and link

← Older revision		Revision as of 18:35, 15 November 2009
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	'''FM '''(Frequency Modulated or Frequency Modulation): The frequency of the carrier signal is changed (modulated) in direct proportion to the instantaneous amplitude of an input signal, usually the voice of the operator. The resulting transmitted signal is of constant amplitude, with increasing amounts of power removed from the carrier and displaced to the sidebands as the modulating signal increases in amplitude.		'''FM '''(Frequency Modulated or Frequency Modulation): The frequency of the carrier signal is changed (modulated) in direct proportion to the instantaneous amplitude of an input signal, usually the voice of the operator. The resulting transmitted signal is of constant amplitude, with increasing amounts of power removed from the carrier and displaced to the sidebands as the modulating signal increases in amplitude.

	''' Fox Hunt''' : A contest to locate a hidden transmitter.		''' [[ARDF \|Fox Hunt]]''' : Also known as ARDF (Amateur Radio Direction Finding). A contest to locate a hidden transmitter.

	'''[[Electromagnetic Waves \|Frequency]]''': The number of complete waves that pass a reference point per second. Expressed in Hertz (Hz)		'''[[Electromagnetic Waves \|Frequency]]''': The number of complete waves that pass a reference point per second. Expressed in Hertz (Hz)

TimVK4YEH: /* F */

2009-07-07T22:51:04Z

← Older revision		Revision as of 15:51, 7 July 2009
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	==F==		==F==

			'''FCC''' : '''F'''ederal '''C'''ommunications '''C'''ommission. The US government body that regulates the use of the radio spectrum.

	'''F/D''' : The ratio of focal length to diameter of a [[Dish or Parabola \| parabolic dish]] antenna.		'''F/D''' : The ratio of focal length to diameter of a [[Dish or Parabola \| parabolic dish]] antenna.
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	'''[[Field day]]''' : An annual event in which portable stations are deployed, contacts made and new or prospective operators encouraged to get on the air.		'''[[Field day]]''' : An annual event in which portable stations are deployed, contacts made and new or prospective operators encouraged to get on the air.

			'''Field Strength Meter''' : A devie used to measure the strength of an electromagnetic field.

	'''[[Filters \|Filter]]''' : An electric circuit (often called a network) that allows certain frequencies to pass but rejects (attenuates) other unwanted frequencies.		'''[[Filters \|Filter]]''' : An electric circuit (often called a network) that allows certain frequencies to pass but rejects (attenuates) other unwanted frequencies.

	'''FM '''(Frequency Modulated or Frequency Modulation): The frequency of the carrier signal is changed (modulated) in direct proportion to the instantaneous amplitude of an input signal, usually the voice of the operator. The resulting transmitted signal is of constant amplitude, with increasing amounts of power removed from the carrier and displaced to the sidebands as the modulating signal increases in amplitude.		'''FM '''(Frequency Modulated or Frequency Modulation): The frequency of the carrier signal is changed (modulated) in direct proportion to the instantaneous amplitude of an input signal, usually the voice of the operator. The resulting transmitted signal is of constant amplitude, with increasing amounts of power removed from the carrier and displaced to the sidebands as the modulating signal increases in amplitude.

			''' Fox Hunt''' : A contest to locate a hidden transmitter.

	'''[[Electromagnetic Waves \|Frequency]]''': The number of complete waves that pass a reference point per second. Expressed in Hertz (Hz)		'''[[Electromagnetic Waves \|Frequency]]''': The number of complete waves that pass a reference point per second. Expressed in Hertz (Hz)

TimVK4YEH: /* F */

2009-06-30T10:03:16Z

← Older revision		Revision as of 03:03, 30 June 2009
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	'''[[Electromagnetic Waves \|Frequency]]''': The number of complete waves that pass a reference point per second. Expressed in Hertz (Hz)		'''[[Electromagnetic Waves \|Frequency]]''': The number of complete waves that pass a reference point per second. Expressed in Hertz (Hz)

	'''Frequency Shift Keying''': A digital mode in which the signal is broken into "chunks". Each chunk is then shifted in frequency slightly above or below the central carrier. Effectively, frequency modulation used to carry a digital signal.		''' FSK - Frequency Shift Keying''': A digital mode in which the signal is broken into "chunks". Each chunk is then shifted in frequency slightly above or below the central carrier. Effectively, frequency modulation used to carry a digital signal.

	''' Fuse''' : A device that self destructs when too much current passes through it - used for circuit protection.		''' Fuse''' : A device that self destructs when too much current passes through it - used for circuit protection.

Carlb: /* F */

2009-06-13T16:24:29Z

← Older revision		Revision as of 09:24, 13 June 2009
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	'''[[Filters \|Filter]]''' : An electric circuit (often called a network) that allows certain frequencies to pass but rejects (attenuates) other unwanted frequencies.		'''[[Filters \|Filter]]''' : An electric circuit (often called a network) that allows certain frequencies to pass but rejects (attenuates) other unwanted frequencies.

	'''FM '''(Frequency Modulated or Frequency Modulation): The ~~shape~~ of the carrier signal is changed (modulated) by the ~~frequency~~ of ~~another~~ signal, usually the voice of the operator.		'''FM '''(Frequency Modulated or Frequency Modulation): The frequency of the carrier signal is changed (modulated) in direct proportion to the instantaneous amplitude of an input signal, usually the voice of the operator. The resulting transmitted signal is of constant amplitude, with increasing amounts of power removed from the carrier and displaced to the sidebands as the modulating signal increases in amplitude.

	'''[[Electromagnetic Waves \|Frequency]]''': The number of complete waves that pass a reference point per second. Expressed in Hertz (Hz)		'''[[Electromagnetic Waves \|Frequency]]''': The number of complete waves that pass a reference point per second. Expressed in Hertz (Hz)

Carlb at 21:43, 12 June 2009

2009-06-12T21:43:20Z

← Older revision		Revision as of 14:43, 12 June 2009
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	~~<table width~~=~~"750" border~~=~~"1" cellpadding~~=~~"6">~~		{{glossary}}
	~~<tr>~~
	~~<td>[[Dictionary of Ham Radio Terms \| A]] </td>~~
	~~<td>[[B]]<~~/~~td>~~		==F==
	~~<td>[[C]]</td>~~
	~~<td>[[~~D~~]]</td>~~		'''F/D''' : The ratio of focal length to diameter of a [[Dish or Parabola \| parabolic dish]] antenna.
	~~<td>~~[[E]]~~</td>~~
	~~<td>[[F]]</td>~~		'''[[Feedlines\|Feedline]]''' : The wire or cable that joins a [[Transceivers \|transmitter]] or [[Receivers \|receiver]] to an [[Antennas \|antenna]]. Also known as a transmission line.
	~~<td>~~[[G]]~~</td>~~
	~~<td>~~[[H]]~~</td>~~		'''FET''' : Field-effect transistor, a semiconductor in which current between source and drain is controlled by voltage applied to a high-impedance gate
	~~<td>~~[[I]]~~</td>~~
	~~<td>~~[[J]]~~</td>~~		'''[[Field day]]''' : An annual event in which portable stations are deployed, contacts made and new or prospective operators encouraged to get on the air.
	~~<td>[[K]]</td>~~
	~~<td>[[L]]</td>~~		'''[[Filters \|Filter]]''' : An electric circuit (often called a network) that allows certain frequencies to pass but rejects (attenuates) other unwanted frequencies.
	~~<td>[[M]]</td>~~
	~~<td>~~[[N]]~~</td>~~		'''FM '''(Frequency Modulated or Frequency Modulation): The shape of the carrier signal is changed (modulated) by the frequency of another signal, usually the voice of the operator.
	~~<td>[[O]]</td>~~
	~~<td>~~[[P]]~~</td>~~		'''[[Electromagnetic Waves \|Frequency]]''': The number of complete waves that pass a reference point per second. Expressed in Hertz (Hz)
	~~<td>[[Q]]</td>~~
	~~<td>[[R]]</td>~~		'''Frequency Shift Keying''': A digital mode in which the signal is broken into "chunks". Each chunk is then shifted in frequency slightly above or below the central carrier. Effectively, frequency modulation used to carry a digital signal.
	~~<td>[[S]]</td>~~
	~~<td>~~[[T]]~~</td>~~		''' Fuse''' : A device that self destructs when too much current passes through it - used for circuit protection.
	~~<td>[[U]]</td>~~
	~~<td>[[V]]</td>~~
	~~<td>[[W]]</td>~~
	~~<td>[[X]]</td>~~
	~~<td>[[Y]]</td>~~
	~~<td>[[Z]]</td>~~
	~~<td>[[0~~ - ~~9]] </td>~~
	~~</tr>~~
	~~</table>~~

TimVK4YEH: index

2009-06-12T21:23:53Z

index

New page

<table width="750" border="1" cellpadding="6">
<tr>
<td>[[Dictionary of Ham Radio Terms | A]] </td>
<td>[[B]]</td>
<td>[[C]]</td>
<td>[[D]]</td>
<td>[[E]]</td>
<td>[[F]]</td>
<td>[[G]]</td>
<td>[[H]]</td>
<td>[[I]]</td>
<td>[[J]]</td>
<td>[[K]]</td>
<td>[[L]]</td>
<td>[[M]]</td>
<td>[[N]]</td>
<td>[[O]]</td>
<td>[[P]]</td>
<td>[[Q]]</td>
<td>[[R]]</td>
<td>[[S]]</td>
<td>[[T]]</td>
<td>[[U]]</td>
<td>[[V]]</td>
<td>[[W]]</td>
<td>[[X]]</td>
<td>[[Y]]</td>
<td>[[Z]]</td>
<td>[[0 - 9]] </td>
</tr>
</table>