attenuator calculator

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  ^updated - 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

Cubical Quad Antenna Calculator - Easy Quad calculator, enter center frequency to get a quad antenna size

Beverage Transformer Calculator - W0FMS Two-Wire Beverage (SWA) Transformer Calculator

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

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

Hittite Microwave Corporation - Amplifiers, filters, attenuators, mixers, PLL, switches and frequency dividers, signal generators, power detectors, transimpedance amplifiers, variable gain amplifiers and more

Meca Electronics - Attenuators, Couplers, Power Dividers, Terminations

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

ARDF Projects - ABARC fox hunting projects, attenuator, antenna, S meter and squeeker.

NOAA Solar Calculators - Improved Solar Calculator, Old Sunrise/Sunset and Solar Noon Calculator, Solar Position Calculator

Fairview Microwave Inc - Supplier of RF, Microwave, & Wireless passive coaxial components, including Coaxial Attenuators, Adapters, Cables, DC Blocks, Terminations, & Connectors

NFM - noise figure measurement - NFM (for Noise Figure Meter) is a software application to assist Noise Figure measurement. NFM implements the method of Agilent application notes AN 57-1 and AN 57-2 for noise figure measurement, but with the addition of an adjustable attenuator after the noise source and between the DUT and instrument.

Coil Inductance Calculator - Approximate Air Coil Inductance Calculator

Coil32 Priority listing - Coil32 is a free coil inductance calculator, that allows to calculate: single layer and multi layer air core coils, toroidal air core coils, inductors on ferrite rings, in pot core, flat coils on the PCB, and also LC resonance parameters. The program have additional plugins to calculate another kinds of coils. The application is free for usage and distributing.

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

Homebrewing attenuators - Construction of attenuator, suitable for fox hunts at 144mhz

Fox Hunt Attenuator - An Offset Attenuator for fox hunts.

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

dbm Calculator - The dbm online calculator and reference table for 50 Ohm

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

RF Safety Compliance Calculator - This program is intended for far-field calculations, Calculate Estimated Power Density based on several factors.