alc design/admin

Aerial Calculations - G4URH calculations to design your own antennas, ground plane, half wave antennas, Quad Antennas and 5/8 verticals

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.

Core Baluns - About core baluns, measurementes, basic theory and calculations

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

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

Calculating wind loads - Mechanical Notes from K7NV

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

Towers and Wind Load - Calculating Antenna Wind Load

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

History of Ham Radio in India - Taken from: Brief History of Amateur Radio in Calcutta-by Avinash Missra, VU2EM

Valcom - Valcom Guelph specializes in the design and manufacturing of a full range of MF Beacon 100 KHz - 600 KHz, AM Broadcasting 540 - 1700 KHz, HF 1.8 - 30 MHz, VHF 30 - 300 MHz and UHF 300 - 1,200 MHz and SHF up to 6 GHz antennas based in Canada

Great Circle Distance Calculator - This online calculator computes the great circle distance between two points on the earth's surface

Kenwood TS-940 Mods - Modifications for the Kenwood TS-940, TS-940S LCD Clock Display Erratic Operation, Talk Power Improvement, erratic display, ALC mod

FT-897D Audio processing and ALC operation - Audio processing and ALC in the FT-897D

Ham - Open Source Ham Radio App for Android. Solar / calculated band conditions & Callsign lookups via QRZ.com XML subscription.

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.

Friis-It NF for iPhone - Friis-It NF is the first iPhone OS based application that allows you to calculate noise figure, system sensitivity, and cascaded gain for an RF Receiver system

iSDR - iSDR is a software defined radio application compatible with the Apple iPhone, iPod touch and iPad™. iSDR is designed for experimenters, shortwave listeners, and amateur radio enthusiasts who would like a truly portable software-defined radio receiver.

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

Amplifiers - Care and Feeding - Antenna and Power considerations, ALC Keying interface, Battery info, Keying interfaces and more

Capacitor kVAr calculator  ^updated - Online calculator to determine the Capacitor kVAr required to improve the power factor from cos 01 to cos 02 with your present kW load

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