loading coil calculator

Rotatable Dipoles  ^pop - Portable, and shortened with loading coils rotatable dipoles for 6 meters, 20 meters and multibands.

Amateur Vertical Antenna Calculator  ^{updated  pop} - This calculator is designed to give the vertical length (height) of a particular antenna, for the frequency and wavelength chosen.

Quad calculator  ^{updated  pop} - Cubical quad antenna calculator in java script

Current distribution in Coils - Current distribution in the antenna loading coils

J-Pole antenna design  ^pop - Complete guide to build Jpole antennas with online dimensions calculator.

Magnetic loop for 80m - Magnetic loop for 80m OH7SV, includes the OH7SV Magnetic Loop Calculator in an Excel file

Inductors used in antenna matching networks - Article about variometers, helipot inductors, roller inductors, binary switched inductors, Coil and Capstan by G3YNH

N5BU BoatAnchor Pix - Contains high resolution fast-loading images of BoatAnchors

Amateur Radio RF Safety Calculator - This is a main beam power density estimation program intended for use as part of a routine evaluation of RF safety compliance with FCC regulations.

Mr coily - Base and mobile antennas,custom ball mounts, single, double, triple coil antennas, flat coils.

Barker & Williamson - Dipole antennas, unique broadband antennas, trap dipole antennas, coils, accessories for HF radio

QTH Locator and Calculator - Calculate bearing and distance and Locator online with this Java application.

Grid Locator and Grid Square - About grid locators and grid squares, includes links to locator and grid square calculators

Maidenhead Locator Calculator - On-line calculator for Maidenhead locator calculations. It will work out your Maidenhead locator if you supply it with map references or calculate map references from your locator code.

Quickyagi - This is the place for downloading the latest DOS version of Quickyagi the freeware yagi modeling program with auto-design & optimize.

WINRLC - Simple freeware tool to calculate several kinds of HF filters. Use to calculate L-C and R-C band filters and bandpasses, L-C, L-R and R-C highpasses and lowpasses, coils and capacitors.

W9DMK Software - Various radio related software, including some antenna analysis, and impedance calculators.

GridX - GRIDX, a BASIC program that calculates grid squares and Great Circle headings and grid.exe, a grid locator calculator

Squares - Grid Square and Distance calculator by w3km

WWLOC - Direction and distance calculator for windows

Qgrid - Maidenhead grid squares calculator, and bearing and distance program

Radioman - Freeware dos VHF/UHF Logbook morse code facility, kenwood transceivers interface, moontracking, distance and bearing calculators by DF9CY but discontinued and unsupported

Radio Propagation & Diffraction Calculator  ^pop - This is a radio frequency propagation calculator for the transmission path between an RF transmitter and a receiver.

ERP Calculator - DOS program that will assist you in determining your 2 meter station's Effective Radiated Power (ERP)

EMI Calculator - Does your Amateur Radio system comply to the EMI rules ? (German values implemented)