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Effect of tower coupling on an array - It's well known that a nearby tower can affect the performance of a vertical array, this article by NK7U describe measurements and prove interaction.

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

4:1 Dual ferrite bead balun - The Dual-Ferrite-Bead 4:1 HF Balun, some preliminary measurements

Hentenna Applications - Plans and measurements to build the Hentenna antenna for HF bands and for the 6 meter band

Home-brew Antennas - Notes on homebrewing antennas by Chris G4CYA, from gamma matching, to phasing antennas, splitters and combiners, baluns and measuring techniques.

OCF 2-Meter Sleeve Dipole Antenna - A 144 MHz dipole antenna made from coax, PVC pipe, and aluminum foil tape

WB2HOL Foxhunting beam - Building the WB2HOL foxhunting beam antenna

Measuring Antenna System SWR - Have you measured the SWR at the antenna?

Linear Focus Parabolic Wifi Antenna - This antenna can be made in a couple of hours and involves a fair amount of measuring, cutting, bending, and bolting metal.

WE-030A Antenna Analyzer - Small and simple to use, this antenna analyzer can speed and ease the tuning and adjustment of HF antennas. It measures the fundamental parameters SWR and return loss.

AOFU Fiberglass Products - Manufacture Fibreglass Rods poles Tapered Fibreglass Rods apply flag poles, Tent poles, Golf flag poles, Sail Battens, Skifield barriers, Kite struts, Sports field markers, Fishing rods.

How Satellite Doppler Tracking Works - The Doppler Effect allows the distance between a satellite transmitting from space and a radio receiver on the ground to be measured by observing how the frequency received from the satellite transmitter changes as the satellite approaches, passes overhead, and moves away.

How to Measure Receiver Sensitivity - Testing an Elecraft K2 sensivity using a signal generator, headphones and an AC Voltmeter

Cushcraft R7 repair and tests - F5DQK repairing and swr measurement tests of a Cushcraft R7 Antenna

GAP Titan DX SWR Measurements - Gap Titan DX Antenna SWR Tests GAP Titan DX Antenna SWR Test

Gap Titan dx SWR tests - GAP Titan DX Measurements of SWR report by WT5L

Dynamic range measurements - Comparison of FT-1000D FT-736R FT-817 FT-847 FT-897 IC-765 Orion TS-2000 Spectral purity of a continous carrier, of a SSB and CW signals

Texso Instruments - Distributor of test and measurement and calibration instruments and provider of NIST traceable ISO/IEC 17025 accredited calibration services. Texso sells insulated tools, multimeters, insulation testers, and much more.

National Test Equipment - New, used, & reconditioned electronic test & measurement equipment sales, rentals, & service. Agilent/HP Spectrum Analyzers, Tektronix Oscilloscopes, Fluke Calibrators, & much more.

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.

Measuring Inductances with a Freqeuency Counter - This article also shows how you can make your own measurements that are as good as those possible with professional equipment

G3TXQ Milliwatt meter - Meter capable of accurately measuring low levels of RF power

Digital Wattmeter - 300nW to 30W - The digital wattmeter project was created for the purpose of measuring power in the range of 300nw to 30w.

QRP SWR Meter - SWR meter for low power output measurements, dedicated to QRP operations

AC power meter - Measure the AC current flowing through your appliances