tape measur*

A Horn Antenna for 2.4 GHz. - This Antenna is not really practical for AO-40 reception, but horn antennas have a number of qualities useful in microwave antenna testing and noise figure measurements.

A Modern Thermocouple Ammeter - Thermocouple ammeters are very rare these days, but the job they were perfect for - measuring antenna currents - is still a modern requirement especially in respect to groundplane currents. By David A. Reid PA3HBB G0BZF

CSVHFS Antenna Gain Measurements - The Central States VHF Society has conducted Antenna Gain Measurements since its inception in 1967. Comparisons between commercial and homebrew antennas, between different homebrew designs, and between different commercial designs. Mostly VHF UHF and up antennas.

Radioexchange.net Antique Radios - Antique radios, ham radio, electronic parts, test equipment, stereo equipment, record players, phonographs, tape recorders, gadgets, Bought & Sold Online

Peet Bros Company - Manufacturer of advanced electronic systems to measure such weather data as: wind speed, wind direction, wind chill, pressure, humidity, rainfall, and dew point.

LEMO Connectors - Lemo offers over 50,000 circular connectors for a variety of industries including medical, military, and test and measurement.

SAT-Service Schneider - Digital radio mondiale DRM products, measuring tools, Magnetic field probes, RF power meters, Broadband loop antennas, DRM devices and services

GAO Engineering - Gao engineering offers a wide range of affordable, popular and reliable rfid products, dsp, arm and other microprocessor evm and development boards, ides, universal programmers, emulators, dsp learning systems, micro-network terminals, test and measurement products for engineers.

WSJT - WSJT is a computer program for VHF/UHF communication dedicated to EME. Support FSK441 for meteor scatter, JT65: for EME and extreme troposcatter, JT6M: for meteor scatter (optimized for 50 MHz)EME Echo: for measuring your own echoes from the Moon, CW: for EME QSOs using 15 WPM Morse code

Circuit Improvements for the TL-922 - by Richard L. Measures, AG6K

IF Filter Measurements on a Yaesu FT-897 - KR1ST IF filter measurements

Test.it - Test and measurements equipment, hp hewlett packard wavetek wandel goltermann wandel

Kitmondo: used test equipment - Kitmondo is an online marketplace for used test equipment and measurement equipment including analyzers, oscilloscopes and generators equipment.

Oplink solutions - Repair and refurbish electronic test & measurement equipment.

Meter Mate - SWR Graph Software - Meter Mate is a companion utility for your directional watt meter that allows you to calculate the SWR reading when the forward and reflected power readings are measured. In addition to calculating the antenna system SWR Meter Mate will also plot the SWR curves of all of your antennas onto graphs that may be printed out.

RevLoad - This graphics-intensive program reveals the load on the output of a matching-network, based on measurements of the components in that network. Adjust the network (tuner) for a flat input, measure or look up the network component values and you will immmediately see the R and jX values of the load on the network, presented as both a schematic with the component values and as a Smith Chart normalized to the specified system impedance.

AG6K Richard L. Measures - Articles and original manuscripts on RF power amplifiers

Adding 160M to HF amplifiers - updated original manuscript, article published in January 1989 QST by Richard L. Measures, AG6K, April 1988

11 KW Linear amplifier by I0JX  ^pop - Use 4CX10000D / 8171, RF output power of 11 KW in key-down carrier on all bands. Power was measured with a Bird 4712 wattmeter and a 25 KW slug

Choosing Wire Size for Toroidal Inductors - Measurements that show it doesn't make much difference

Circuit Improvements for the TS-430S - by Richard L. Measures, AG6K

Grounding and RFI - Described system was designed to provide a high level of lightning protection - there are three levels of defense to guard against let-through. It isn't perfect, but does, however, follow good guidelines and shows measured improvements in RFI reduction.

VK5BR : Intermodulation - Intermodulation Performance and Measurement of Intermodulation Components by Lloyd Butler VK5BR First published in "Amateur Radio" August 1997

Amsat-na government filings - Amendment of Part 15 regarding new requirements and measurement guidelines for Access Broadband over Power Line Systems

Rainbow Antenna Analyzer - A small and inexpensive measurement device designed to determine antenna performance across the amateur bands through use of automatically collected SWR readings