Vertical antenna - Revision history

TheAnarcat at 04:45, 22 November 2010

2010-11-22T04:45:47Z

← Older revision		Revision as of 21:45, 21 November 2010
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	== Phased Vertical Arrays ==		== Phased Vertical Arrays ==


			== External links ==

			* [http://www.iv3sbe.webfundis.net/html/Rybakov806.htm IV2SBE Rybakov 806 Multiband Antenna]
			* [http://www.bencher.com/ham/index.php?main_page=product_info&products_id=14 Butternut HF9V 80-6 9-Band Vertical Antenna]

	{{antennas}}		{{antennas}}

2010-08-05T00:02:23Z

1/2 Wave Vertical

← Older revision		Revision as of 17:02, 4 August 2010
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	== 1/2 Wave Vertical ==		== 1/2 Wave Vertical ==
	A half wave vertical is electrically equivalent to ~~one half of~~ a center fed dipole that is oriented vertically rather than horizontally. The other half of the dipole is in effect a reflection in the ground-plane of the vertical element.		A half wave vertical is electrically equivalent to a center fed dipole that is oriented vertically rather than horizontally. The other half of the dipole is in effect a reflection in the ground-plane of the vertical element.

	==Slim-Jim and J-Pole antennas==		==Slim-Jim and J-Pole antennas==

2010-08-05T00:01:59Z

1/4 wave Vertical

← Older revision		Revision as of 17:01, 4 August 2010
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	== 1/4 wave Vertical ==		== 1/4 wave Vertical ==

	A quarter wave vertical is electrically equivalent to one half of a ~~centre~~ fed dipole that is oriented vertically rather than horizontally. The other half of the dipole is in effect a reflection in the ~~groundplane~~ of the vertical element.		A quarter wave vertical is electrically equivalent to one half of a center fed dipole that is oriented vertically rather than horizontally. The other half of the dipole is in effect a reflection in the ground-plane of the vertical element.

	[[Image:Quarter_vert.jpg \| 400px]]		[[Image:Quarter_vert.jpg \| 400px]]

	The ~~groundplane~~ need not actually constructed of solid material. Just as effective is four radials or "arms" at right angles to each other.		The ground-plane need not actually constructed of solid material. Just as effective is four radials or "arms" at right angles to each other.

	For best results the radials may be perpendicular to the vertical element or angled downwards at about 45 degrees.		For best results the radials may be perpendicular to the vertical element or angled downwards at about 45 degrees.

2010-08-05T00:01:30Z

1/2 Wave Vertical

← Older revision		Revision as of 17:01, 4 August 2010
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	== 1/2 Wave Vertical ==		== 1/2 Wave Vertical ==
			A half wave vertical is electrically equivalent to one half of a center fed dipole that is oriented vertically rather than horizontally. The other half of the dipole is in effect a reflection in the ground-plane of the vertical element.

	==Slim-Jim and J-Pole antennas==		==Slim-Jim and J-Pole antennas==

2009-04-11T18:38:53Z

← Older revision	Revision as of 11:38, 11 April 2009
(No difference)

2009-04-09T00:56:31Z

Phased Vertical Arrays

2008-12-28T05:56:30Z

added pic and some text

← Older revision		Revision as of 22:56, 27 December 2008
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	== 1/4 wave Vertical ==		== 1/4 wave Vertical ==

			A quarter wave vertical is electrically equivalent to one half of a centre fed dipole that is oriented vertically rather than horizontally. The other half of the dipole is in effect a reflection in the groundplane of the vertical element.

			[[Image:Quarter_vert.jpg \| 400px]]

			The groundplane need not actually constructed of solid material. Just as effective is four radials or "arms" at right angles to each other.

			For best results the radials may be perpendicular to the vertical element or angled downwards at about 45 degrees.

	== 5/8 Wave Vertical ==		== 5/8 Wave Vertical ==

2008-12-28T02:27:28Z

Slim-Jim and J-Pole antennas

← Older revision		Revision as of 19:27, 27 December 2008
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	==Slim-Jim and J-Pole antennas==		==Slim-Jim and J-Pole antennas==

			[[Image:Slimjim_jpole_pix.jpg \| 600px]]

	===Indicative dimensions for Slim-Jim and J-Pole antennas===		===Indicative dimensions for Slim-Jim and J-Pole antennas===

2008-12-28T02:26:17Z

Indicative dimensions for Slim-Jim and J-Pole antennas

← Older revision		Revision as of 19:26, 27 December 2008
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	===Indicative dimensions for Slim-Jim and J-Pole antennas===		===Indicative dimensions for Slim-Jim and J-Pole antennas===

			* Note that the Slim-Jim only uses dimensions A, D, F and C

	[[Image:Slimjim_jpole_meas.jpg \| 700px]]		[[Image:Slimjim_jpole_meas.jpg \| 700px]]

2008-12-28T02:02:15Z

← Older revision		Revision as of 19:02, 27 December 2008
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	== 1/2 Wave Vertical ==		== 1/2 Wave Vertical ==

			==Slim-Jim and J-Pole antennas==

			===Indicative dimensions for Slim-Jim and J-Pole antennas===

			[[Image:Slimjim_jpole_meas.jpg \| 700px]]

	== Importance of Ground ==		== Importance of Ground ==