im calculator

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im calculator

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Antennas : Antenna Calculators
  • Slim Jim antenna calculator - How to make a simple but effective Slim Jim antenna. It includes a calculator to work out all the mesurements for the frequency you require.
    [ Hits: 7181 | Votes: 65 | Rating: 5.31 ]
  • Online Antenna Analysis and Design Software - Free online software to calculate wire antenna power patterns, directivity, input impedance using method of moments.
    [ Hits: 2200 | Votes: 19 | Rating: 4.74 ]
  • Discone Antenna Calculator - Calculate dimension for discone antennas online
    [ Hits: 2536 | Votes: 35 | Rating: 6.00 ]
  • Center-Fed Wire Dipole Antenna Tuning Calculator - Ever need a way to estimate the amount of wire to add to or remove from a center-fed wire dipole antenna to achieve resonance at a desired frequency? This article help to determine correct wire lenght.
    [ Hits: 716 | Votes: 5 | Rating: 3.60 ]
  • Yagi Calculator - Yagi Calculator is a Windows program that also runs well on Linux, Ubuntu 8.10 under Wine, to produce dimensions for a DL6WU style long Yagi antenna. Long yagis are commonly used from the 144MHz amateur band to the 2.4GHz band.
    [ Hits: 1535 | Votes: 27 | Rating: 6.25 ]
  • 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: 779 | Votes: 23 | Rating: 3.27 ]
  • Circular Loop Antenna Calculator - This free online circular loop antenna calculator uses a wire grid method of moments formulation to model a single circular loop with a single feed point. The electric current is computed and used to construct the far zone radiation power pattern. The input impedance and directivity are also computed.
    [ Hits: 914 | Votes: 17 | Rating: 4.47 ]
  • Dipole Antenna Calculator - This free online dipole antenna calculator uses a wire grid method of moments formulation to model a single center fed dipole. The electric current is computed and used to construct the far zone radiation power pattern. The input impedance and directivity are also computed.
    [ Hits: 1148 | Votes: 21 | Rating: 4.23 ]
  • 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: 633 | Votes: 21 | Rating: 4.95 ]
Antennas : HB9CV
  • HB9CV antenna calculator - Calculate dimension for HB9CV directional antennas
    [ Hits: 2264 | Votes: 59 | Rating: 4.47 ]
Antennas : Theory : Impedance matching
  • T Match efficiency estimator - This calculator estimates the efficiency of a T match tuner using a simple loss model.
    [ Hits: 466 | Votes: 1 | Rating: 4.00 ]
DX Resources : Beacons : 6 meters beacons Propagation : Resources
  • NOAA Solar Calculators - Improved Solar Calculator, Old Sunrise/Sunset and Solar Noon Calculator, Solar Position Calculator
    [ Hits: 155 | Votes: 0 | Rating: 0.00 ]
Software : Antenna analysis
  • Magnetic Loop Excel sheet - A magnetic loop antenna calculator made with an excel sheet that run also with open office, let you design mag loop antenna dimensions by AA5TB
    [ Hits: 1166 | Votes: 3 | Rating: 10.00 ]
Software : Propagation
  • MicroMUF - MicroMUF is a windows free HF propagation calculator that you can use to estimate the MUF (Maximum Usable Frequency) and LUF (Lowest Usable Frequency) between any two points on the Earth.
    [ Hits: 1013 | Votes: 1 | Rating: 4.00 ]
Software : iPhone
  • iRFC for iPhone - IRFC offers a full Radio Frequency Calculator on the go for network impedance adaptation with smith chart
    [ Hits: 379 | Votes: 1 | Rating: 10.00 ]
Technical Reference : Attenuators
  • RF Attenuator Calculator - This is an on-line rf attenuator calculator provided free in order to promote the FLEXI-BOX. Calculates the resistor values, attenuation, minimum attenuation, impedance, reflection coefficient, VSWR and return loss of a matching Pi attenuator
    [ Hits: 111 | Votes: 0 | Rating: 0.00 ]
Technical Reference : Coax Cables and Connectors Technical Reference : RF Safety
  • RF Safety Compliance Calculator - This program is intended for far-field calculations, Calculate Estimated Power Density based on several factors.
    [ Hits: 331 | Votes: 2 | Rating: 5.50 ]
  • EMR Safety Compliance Calculator - This spreadsheet replicates ALL the tables and lookups in the FCC, ACMA and New Zealand EMR RF Safety compliance regulations.
    [ Hits: 262 | Votes: 3 | Rating: 6.33 ]
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