N - Revision history

TimVK4YEH at 06:07, 2 April 2011

2011-04-02T06:07:50Z

← Older revision		Revision as of 23:07, 1 April 2011
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	'''[[Bipolar-Junction_Transistors#NPN_vs._PNP \|NPN]]''' : A type of bipolar transistor that has a layer of P-type semiconductor material sandwiched between layers of N-type semiconductor material.		'''[[Bipolar-Junction_Transistors#NPN_vs._PNP \|NPN]]''' : A type of bipolar transistor that has a layer of P-type semiconductor material sandwiched between layers of N-type semiconductor material.

	'''Null''' : A position in the radiation pattern of an [[Antenna]] where the radiation is zero or approaches zero		'''[[nulls \| Null]]''' : A position in the radiation pattern of an [[Antenna]] where the radiation is zero or approaches zero

	'''NVIS''' : near-vertical-incidence-skywave, a [[Propagation \| propagation]] mode where signals are reflected back down from directly overhead. Useful for relatively short-distances, overcoming the limitations of the usual "skip-zone" distance"		'''NVIS''' : near-vertical-incidence-skywave, a [[Propagation \| propagation]] mode where signals are reflected back down from directly overhead. Useful for relatively short-distances, overcoming the limitations of the usual "skip-zone" distance"

TimVK4YEH: null

2011-04-02T05:58:24Z

null

← Older revision		Revision as of 22:58, 1 April 2011
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	'''[[Bipolar-Junction_Transistors#NPN_vs._PNP \|NPN]]''' : A type of bipolar transistor that has a layer of P-type semiconductor material sandwiched between layers of N-type semiconductor material.		'''[[Bipolar-Junction_Transistors#NPN_vs._PNP \|NPN]]''' : A type of bipolar transistor that has a layer of P-type semiconductor material sandwiched between layers of N-type semiconductor material.

			'''Null''' : A position in the radiation pattern of an [[Antenna]] where the radiation is zero or approaches zero

	'''NVIS''' : near-vertical-incidence-skywave, a [[Propagation \| propagation]] mode where signals are reflected back down from directly overhead. Useful for relatively short-distances, overcoming the limitations of the usual "skip-zone" distance"		'''NVIS''' : near-vertical-incidence-skywave, a [[Propagation \| propagation]] mode where signals are reflected back down from directly overhead. Useful for relatively short-distances, overcoming the limitations of the usual "skip-zone" distance"

TimVK4YEH: added internal link to NPN

2010-11-09T09:34:04Z

added internal link to NPN

← Older revision		Revision as of 02:34, 9 November 2010
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	'''Noise''' : Unwanted elecromagnetic energy that can interfere with signal transmission or reception.		'''Noise''' : Unwanted elecromagnetic energy that can interfere with signal transmission or reception.

	'''NPN''' : A type of bipolar transistor that has a layer of P-type semiconductor material sandwiched between layers of N-type semiconductor material.		'''[[Bipolar-Junction_Transistors#NPN_vs._PNP \|NPN]]''' : A type of bipolar transistor that has a layer of P-type semiconductor material sandwiched between layers of N-type semiconductor material.

	'''NVIS''' : near-vertical-incidence-skywave, a [[Propagation \| propagation]] mode where signals are reflected back down from directly overhead. Useful for relatively short-distances, overcoming the limitations of the usual "skip-zone" distance"		'''NVIS''' : near-vertical-incidence-skywave, a [[Propagation \| propagation]] mode where signals are reflected back down from directly overhead. Useful for relatively short-distances, overcoming the limitations of the usual "skip-zone" distance"

Carlb: /* N */

2009-06-18T18:24:21Z

← Older revision		Revision as of 11:24, 18 June 2009
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	'''Negative Offset''' : Used in repeater systems where the repeater input frequency is lower than the output frequency.		'''Negative Offset''' : Used in repeater systems where the repeater input frequency is lower than the output frequency.

	'''[[Nets \| Net]]''' : a scheduled and structured on-air meeting of amateurs - often run and controlled by clubs. A ~~structured~~ directed net designates one station to act as net controller; that station is responsible for inviting other stations to check in (by sending their call signs) and then sequentially assigns each station a window of time in which to send traffic to other stations on the net. Intent is to avoid message collisions which otherwise may be caused by multiple stations attempting to send simultaneously.		'''[[Nets \| Net]]''' : a scheduled and structured on-air meeting of amateurs - often run and controlled by clubs. A directed net designates one station to act as net controller; that station is responsible for inviting other stations to check in (by sending their call signs) and then sequentially assigns each station a window of time in which to send traffic to other stations on the net. Intent is to avoid message collisions which otherwise may be caused by multiple stations attempting to send simultaneously.

	'''NiCad''' : Nickel Cadmium, generally refers to a type of rechargeable battery.		'''NiCad''' : Nickel Cadmium, generally refers to a type of rechargeable battery with 1.2 volts per cell.

	'''NiMH''' : Nickel Metal Hydride, generally refers to a newer type of rechargeable battery.		'''NiMH''' : Nickel Metal Hydride, generally refers to a newer type of rechargeable battery with the same voltage as NiCad cells but increased capacity. NiMH cells do not exhibit the memory effects associated with partial discharge of NiCads, but do still need to be recharged before use if they have been stored for a month or more.

	'''Noise''' : Unwanted elecromagnetic energy that can interfere with signal transmission or reception.		'''Noise''' : Unwanted elecromagnetic energy that can interfere with signal transmission or reception.

Carlb: /* N */

2009-06-18T14:42:42Z

← Older revision		Revision as of 07:42, 18 June 2009
Line 15:		Line 15:
	'''Negative Offset''' : Used in repeater systems where the repeater input frequency is lower than the output frequency.		'''Negative Offset''' : Used in repeater systems where the repeater input frequency is lower than the output frequency.

	'''[[Nets \| Net]]''' : a scheduled and structured on-air meeting of amateurs - often run and controlled by clubs. A structured net designates one station to act as net controller; that station is responsible for inviting other stations to check in (by sending their call signs) and then sequentially assigns each station a window of time in which to send traffic to other stations on the net. Intent is to avoid message collisions which otherwise may be caused by multiple stations attempting to send simultaneously.		'''[[Nets \| Net]]''' : a scheduled and structured on-air meeting of amateurs - often run and controlled by clubs. A structured directed net designates one station to act as net controller; that station is responsible for inviting other stations to check in (by sending their call signs) and then sequentially assigns each station a window of time in which to send traffic to other stations on the net. Intent is to avoid message collisions which otherwise may be caused by multiple stations attempting to send simultaneously.

	'''NiCad''' : Nickel Cadmium, generally refers to a type of rechargeable battery.		'''NiCad''' : Nickel Cadmium, generally refers to a type of rechargeable battery.

Carlb: New page: {{glossary}} ==N== '''NB''': Narrow band. Also noise blanker. '''NBFM''' : Narrow band FM '''Negative''' : no, incorrect '''Negative copy''' : unsuccessful transmission '''Negative F...

2009-06-12T21:49:16Z

New page: {{glossary}} ==N== '''NB''': Narrow band. Also noise blanker. '''NBFM''' : Narrow band FM '''Negative''' : no, incorrect '''Negative copy''' : unsuccessful transmission '''Negative F...

New page

{{glossary}}

==N==

'''NB''': Narrow band. Also noise blanker.

'''NBFM''' : Narrow band FM

'''Negative''' : no, incorrect

'''Negative copy''' : unsuccessful transmission

'''Negative Feedback''' A process in which a portion of the amplifier output is returned to the input, 180 degrees out of phase with the input signal.

'''Negative Offset''' : Used in repeater systems where the repeater input frequency is lower than the output frequency.

'''[[Nets | Net]]''' : a scheduled and structured on-air meeting of amateurs - often run and controlled by clubs. A structured net designates one station to act as net controller; that station is responsible for inviting other stations to check in (by sending their call signs) and then sequentially assigns each station a window of time in which to send traffic to other stations on the net. Intent is to avoid message collisions which otherwise may be caused by multiple stations attempting to send simultaneously.

'''NiCad''' : Nickel Cadmium, generally refers to a type of rechargeable battery.

'''NiMH''' : Nickel Metal Hydride, generally refers to a newer type of rechargeable battery.

'''Noise''' : Unwanted elecromagnetic energy that can interfere with signal transmission or reception.

'''NPN''' : A type of bipolar transistor that has a layer of P-type semiconductor material sandwiched between layers of N-type semiconductor material.

'''NVIS''' : near-vertical-incidence-skywave, a [[Propagation | propagation]] mode where signals are reflected back down from directly overhead. Useful for relatively short-distances, overcoming the limitations of the usual "skip-zone" distance"