resonant
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Antennas : 80M 80 Meter Pizza Pan Antenna
 This is a resonant, halfwave, vertical antenna. It takes up little space in the back yard, was designed for operation on a single frequency 80 meter PSK net, and is reasonably inexpensive to construct by Chuck Hines, K6QKL
[ Hits: 3580  Votes: 3  Rating: 5 ]
 Dipole and Inverted V Antenna Calculator
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 Enter the resonant frequency for the dipole/vee antenna calculation
[ Hits: 16416  Votes: 59  Rating: 5.11 ]
 Loop antenna resonant frequency calculator
 Calculates resonant frequency of a loop antenna, correcting for distributed capacitance.
[ Hits: 10780  Votes: 52  Rating: 4.11 ]
 Dipole Calculator in JavaScript
 Input the desired resonant frequency and it will calculate lenght in inches feet and meters
[ Hits: 4583  Votes: 20  Rating: 6 ]
 WB6ZQZ 3 in 1 Balun
 Builing a triple ration balun, that match resonant antennas from 9 ohms to 75 ohms with 1.5:1 or less SWR
[ Hits: 6330  Votes: 7  Rating: 7 ]
 CobWebb multiband folded dipole
 The cobwebb antenna it is basically a 5 band antenna comprising of 5 full half wave dipoles for each band  between 10 meters and 20 meters, the antenna is also resonant on 6M and can be modeled even for VHF frequencies.
[ Hits: 7879  Votes: 0  Rating: 0 ]
 EndFed Halfwave Antenna
 The endfed halfwave antenna is a resonant half wavelength long antenna like a dipole antenna except for it is fed at its end rather then in the center. This antenna is as old as radio and is probably best known as the Zepp Antenna
[ Hits: 23772  Votes: 16  Rating: 7.49 ]
 SkyWire horizontal loop antenna
 A Wire resonant loop antenna for 160 meters band article by N4KC
[ Hits: 751  Votes: 2  Rating: 9.5 ]
 Thinking about Ideal Loops
 Loop antennae have been used from ELF to UHF since the beginning of radiocommunications. At low frequencies, the main problem for loop antennae is to have enough sensitivity; the antenna being very small respect to the wavelength the collected energy is also small. To increase the output level the loop may be made resonant, so loosing it%u2019s intrinsic aperiodic characteristics.
[ Hits: 2097  Votes: 2  Rating: 6.5 ]
 Length of a Resonant Square Quad Loop
 Calculating the length of a resonant square quad loop
[ Hits: 971  Votes: 1  Rating: 10 ]
 Vertical antenna for Vacation
 Vertical Vacation Antenna for 80, 40 and 20 MeterBand, by Herbert OE3BMB
This antenna is a full size λ/4 for 20m and 40m band, and a shortened λ/4 for the 80m band.
Generally on the 40m band the SWR is under 1,6. In 80m and 20m band at the resonant frequency the SWR is about 1,1.
[ Hits: 4892  Votes: 4  Rating: 8 ]
 Petlowany Antennas by K6NO
 WorldRadio Article on Petlowany antennas base on this principle: if a length of wire is wound into a spiralshaped coil and excited by a radio frequency current connected to the innermost portion of the coil, it will then, and only then, exhibit RF characteristics that closely approximate those of a resonant linear wire of the same length
[ Hits: 3485  Votes: 9  Rating: 6.22 ]
 DCTL Antennas and other compact antennas
 The Distributed Capacitance Twisted Loop is an inexpensive, effective, resonant alternative that can fit in a 8' tall by 12' or so wide space, like a wall, or balcony, even on 80 meters. 160 meters from an apartment, a full wave look and a cage dipole
[ Hits: 4121  Votes: 1  Rating: 5 ]
 Optimizing Inductors
 While intended mainly for antenna loading coils, this article also applies to other resonant systems, such as amplifier tank circuits.
[ Hits: 500  Votes: 1  Rating: 10 ]
 Building Coaxial Traps
 This page describes the design and construction materials W8WWV used to build a coaxial cable trap. A coaxial cable trap is a parallel resonant circuit that is usually inserted in an antenna element to enable multiband operation.
[ Hits: 10018  Votes: 5  Rating: 8.2 ]
 Multi Band Antenna Traps
 These devices are called Traps, but they are actually more like frequency sensitive switches. They are parallel resonant, high Q, tuned circuits which provide a very high impedance at their frequency of resonance.
[ Hits: 4756  Votes: 3  Rating: 6 ]
 W3DZZ multiband dipole
 The multiband trapped dipole is resonant on approx 3.7, 7, 14, 24 7 28.5 Mhz. The overall top length needs to be approximately 32.9 Meters
[ Hits: 9808  Votes: 16  Rating: 7.68 ]
 FieldDeployable Antennas
 Resonant dipoles, the W3EDP and endfed wires, the extended double zepp, nonresonant doublets,
and the "ZipCord Special" , the W6MMA vertical.
[ Hits: 7155  Votes: 3  Rating: 7 ]
 NI4L Dipoles
 Custom resonant dipoles
[ Hits: 2455  Votes: 8  Rating: 8.63 ]
 Troubleshooting Traps
 This article refers mainly to the old Cushcraft 1/4 wavelength AV series of antennas (12AVQ, 14AVQ etc) hence the references to radials. The R series (R5, R7 etc) are 1/2 wavelength antennas, and the radials are NOT 1/4 wavelength resonant.
[ Hits: 2613  Votes: 0  Rating: 0 ]
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