Two New Multiband Trap Dipoles - NRHARC

Magnetic Loop Antennas - NRHARC

Basic electrical characteristics of a Magnetic loop First: here is a conventional current and voltage distribution on the1/2 wave dipole. It can be made to relate to the current and voltage nodes that exist on a …

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Build a Space Efficient Dipole Antenna for 40, 80 and 160 ...

Fig 2—The improved coaxial-cable traps use two layered windings to provide an unusually high inductance-to-capacitance ratio, higher Q, and twice the breakdown voltage of single-

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successful wire antennas PRELIMS

SUCCESSFUL WIRE ANTENNAS 44 If it were made from an infinitely thin conductor wire, our theoretical dipole in free space would have an impedance of about 73Ω at its centre.

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5-BANDS, V-DIPOLE ANTENNA - cd-corp.com

5-BANDS, V-DIPOLE ANTENNA 330V ☆Hybrid Type, 3.5/3.8MHz(5-CH), 7MHz(3-CH), 14~28MHz(4-CH) The model 330V is a 5-band V-dipole antenna of an hybrid type by employing trap and relay controlled matching tuner.

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20 METER ROTATABLE DIPOLE ANTENNA PROJECT Design …

Design Goals and Objective: Construct a compact, 20 meter rotatable dipole antenna of durable weather worthy components supported at a single point obviating the need for multiple supports and multiple support ropes

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G7FEK Limited Space Antenna - Suomen Radioamatööriliitto

© 1988 - 2009 Mike Dennis, G7FEK. - Website: www.g7fek.co.uk - updated: 27 March 2010 G7FEK Limited Space Antenna G7FEK Multi-band “Nested Marconi” Antenna ...

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Stealth Antennas

Contents 1 Introduction 1 2 Electrical and other safety issues 21 3 Using your roof space 29 4 Stealth antennas for the loft 37 5 External antennas 75

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Antennas 101 “Don’t Be a 0.97 dB Weakling!”

Antennas 101 2 The Basics - 1 •Antennas radiate (or receive) because electrons are accelerated (or are caused to accelerate) in the antenna’s elements