pi calculator
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Antennas : Antenna Calculators
 Dipole and Inverted V Antenna Calculator
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 Enter the resonant frequency for the dipole/vee antenna calculation
[ Hits: 16030  Votes: 51  Rating: 5.10 ]
 Helix Calculator
 JavaScript Implementation Written by Fred Spinner, W0FMS
[ Hits: 3347  Votes: 20  Rating: 3.99 ]
 Beverage Transformer Calculator
 W0FMS TwoWire Beverage (SWA) Transformer Calculator
[ Hits: 812  Votes: 6  Rating: 4.33 ]
 Archimedean Spiral Antenna Calculator
 This free online archimedean spiral antenna calculator uses a wire grid method of moments formulation to model a single or multiple arm spiral. The electric current is computed and used to construct the far zone radiation power pattern. The input impedance and directivity are also computed. Requires Silverlight installed.
[ Hits: 845  Votes: 29  Rating: 3.38 ]
 Equiangular Spiral Antenna Calculator
 This free online equiangular spiral antenna calculator uses a wire grid method of moments formulation to model a single or multiple arm spiral. The electric current is computed and used to construct the far zone radiation power pattern. The input impedance and directivity are also computed.
[ Hits: 652  Votes: 22  Rating: 4.77 ]
 K7TJO copper pipe hentenna
 Hentenna calculations and resources. Copper tubing / pipe with javascript calculator. Rectangular loop with matching section.
[ Hits: 4693  Votes: 9  Rating: 7.88 ]
 Loop Antennas and Calculator
 KA1FSB loop calculator give you a quick overview of the feasibility of "squeezing" a loop into your available yard or apartment space. The easy calculator yields a reasonable approximation of dimensions, to within 5% over the amateur bands, using typical wire gauges ranging from 1218 AWG.
[ Hits: 13269  Votes: 45  Rating: 6.74 ]
 Magnetic loop for 80m
 A Magnetic loop antenna project for 80 meters band by OH7SV, with detailed pictures and the Magnetic Loop Calculator in an Excel file
[ Hits: 13422  Votes: 19  Rating: 7.15 ]
 Building the Single Sided 8 Slot Waveguide
 Online calculator and a full documented pictorial guide to build a single sided 8 slot waveguide antenna
[ Hits: 415  Votes: 1  Rating: 1.00 ]
 Yagi antenna and variations
 Basic priciples of Yagi antennas and its variations like Quagi antennas, Quad antennas includes pictures, drawings and online calculators by KN9B
[ Hits: 291  Votes: 0  Rating: 0.00 ]
 Design and build helix antennas
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 An online javascript calculator and quite a few pictures to show how to make a helix antenna.
[ Hits: 17194  Votes: 394  Rating: 8.50 ]
 HF Beam Calculator
 A javascipt online calculator for 2 and 3 element beam antennas.
Just input frequency and will diplay element dimensions and spacing. Measurements in Feet and Meters by G4VWL
[ Hits: 3150  Votes: 27  Rating: 5.45 ]
 Magnetic Loop Software
 Loop Calculator and Capacitor Design Software
[ Hits: 944  Votes: 3  Rating: 4.33 ]
 Great Circle Calculator
 A javascript online calculator of bearing and distances by G4VWL
[ Hits: 1302  Votes: 2  Rating: 2.50 ]
 RF Attenuator Calculator
 This is an online rf attenuator calculator provided free in order to promote the FLEXIBOX. Calculates the resistor values, attenuation, minimum attenuation, impedance, reflection coefficient, VSWR and return loss of a matching Pi attenuator
[ Hits: 140  Votes: 0  Rating: 0.00 ]
 Microphone sensivity calculators
 Mic online calculator , Microphone Dynamic Range Calculator, Microphone Sensitivity Calculator
[ Hits: 247  Votes: 3  Rating: 4.67 ]
 Inductor Calculator
 Calculate inductance online, with the cylindrical Coil Inductor Design Equations Formulas Calculator
[ Hits: 135  Votes: 0  Rating: 0.00 ]
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