pi calculator
18 links
Antennas : Antenna Calculators
 Dipole and Inverted V Antenna Calculator
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 Enter the resonant frequency for the dipole/vee antenna calculation
[ Hits: 16104  Votes: 52  Rating: 5.14 ]
 Helix Calculator
 JavaScript Implementation Written by Fred Spinner, W0FMS
[ Hits: 3356  Votes: 20  Rating: 3.99 ]
 Beverage Transformer Calculator
 W0FMS TwoWire Beverage (SWA) Transformer Calculator
[ Hits: 827  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: 849  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: 655  Votes: 22  Rating: 4.77 ]
 End Fed Half Wave Antenna Coupler
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 A home made endfed halfwave antenna coupler with antenna lenght calculator and counterpoise calculator based on center frequency. Includes pictures and drawings along to antenna homebrewing instructions with a home made on air wound transformer
[ Hits: 82  Votes: 0  Rating: 0.00 ]
 K7TJO copper pipe hentenna
 Hentenna calculations and resources. Copper tubing / pipe with javascript calculator. Rectangular loop with matching section.
[ Hits: 4722  Votes: 9  Rating: 7.88 ]
 Loop Antennas and Calculator
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 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: 13520  Votes: 49  Rating: 6.47 ]
 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: 13513  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: 497  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: 302  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: 17242  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: 3178  Votes: 27  Rating: 5.45 ]
 Magnetic Loop Software
 Loop Calculator and Capacitor Design Software
[ Hits: 960  Votes: 3  Rating: 4.33 ]
 Great Circle Calculator
 A javascript online calculator of bearing and distances by G4VWL
[ Hits: 1310  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: 164  Votes: 0  Rating: 0.00 ]
 Microphone sensivity calculators
 Mic online calculator , Microphone Dynamic Range Calculator, Microphone Sensitivity Calculator
[ Hits: 255  Votes: 3  Rating: 4.67 ]
 Inductor Calculator
 Calculate inductance online, with the cylindrical Coil Inductor Design Equations Formulas Calculator
[ Hits: 150  Votes: 0  Rating: 0.00 ]
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