loading coil calculator

80m mobile antenna - The antenna is made in four sections which consists of a base matching coil, a helical section, a centre loading coil and the top whip section with its capacity hat by G4DCH

HF Helical Whip Calculator - Build your own HF helical whip antenna for mobile or portable operation

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.

Online Antenna Analysis and Design Software - Free online software to calculate wire antenna power patterns, directivity, input impedance using method of moments.

HF Beam Calculator - Calculate the Measurements for a 2 or 3 ele Beam

Antenna Matching Coil Adjustment Procedure - Without this basic knowledge, addressing antenna problems, RFI problems, and matching problems, results in a frustrating situation. Procedure which must be followed to properly adjust a shunt matching coil.

Mobile Loading Coil Measurements - 75m Mobile Texas Bugcatcher Loading Coil Measurements

Current Through a 75m Bugcatcher Loading Coil - About experiments and measurements on loading coils using net standing wave current

Coiled Coax Choke Balun - A very practical Balun for aerial work is the choke type

Do it yourself HF2V - HF2V dimensions for all the coils and capacitors. Make your own HF2V antenna with 160 80 40 and 30 meters kits by OZ9AEC

Antenna Efficiency - K0BG article con antenna efficiency covering topics like radiation resistance, coil losses and ground losses, other kind of losses. How calculate efficiency and Bandwidth Notes

T Match efficiency estimator - This calculator estimates the efficiency of a T match tuner using a simple loss model.

Wind Loading of Antennas - Calculation of the wind surface and the wind load of antennas

Antenna Wind Loading Standards - The Rated Wind Velocity and Loading for antennas is calculated using industry standard TIA-329-C.

Bootstrap coax traps for antennas - Analysis of an antenna trap where a coil is formed of a length of coax cable, the outer conductor of one coax end is tied to the inner conductor of the other coax end, and the remaining connections form the terminals for the trap.

Double T Bar Verticals - Double T Bar Vertical antenna are vertical antenna with cross bars on the top and bottom. These crossbars provide capacitance loading thus reducing the size of the antenna

Six Meters Beacons Calculator - The six meter beacons calculator for distance and azimuth by OE1SMC

QSL statistics  ^updated - Online database of QSL card exchange status. Lookup if stations confirm QSOs and share your stats by uploading your ADIF log.

Electronic Products Design - Electronic Products Design Inc based in North Carolina, offers you custom design of transformers, coils, and telemetry control systems.

QRA Calculator - Converts your Lat/Long into an IARU Locator

Coil Inductance Calculator - Approximate Air Coil Inductance Calculator

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.

iRFC for iPhone - IRFC offers a full Radio Frequency Calculator on the go for network impedance adaptation with smith chart

DB Watts EIRP Calculator - Online calculator, to convert dbWatts to Watts and vice-versa, or ERP and EIRP by G4URH

Coax Cable Loss and Antenna Gain Calculator - Types of coax cable and line loss calculator, online coax-cable loss / antenna gain calculator