Test Equipment Archives - Page 2 of 2

SWR and Return Loss – There’s an Ap for That

14 May 2010 by Bob K0NR

For the RF/microwave enthusiasts out there, you may recall the old HP Reflectometer Calculator that does conversions between SWR, Return Loss and calculated mismatch uncertainty. Well, fast forward to the 21st century and this same functionality can be found in an iPhone ap. Agilent Technologies has a free ap available on iTunes that does these … Read more

Agilent FieldFox RF Analyzer

26 February 20091 February 2009 by Bob K0NR

I am a bit of a test equipment junkie….it has something to do with working in the electronic measurement business for most of my career. There are many great pieces of test equipment out there but every once in a while, one comes along that really captures the imagination. Over the weekend, I got my … Read more

Model 400 Mini Volt Voltmeter

1 January 200921 July 2007 by Bob K0NR

I’ve worked in the electronic test and measurement business for over a quarter of a century, so I have a keen interest in test equipment. My friend Steve K0SRW came across an interesting “classic” voltmeter and decided that I needed it in my collection of electronic treasures. Thanks, Steve! This measuring device is a clever … Read more

Ten Uses of a Digital Multimeter in Ham Radio

1 January 20093 June 2006 by Bob K0NR

The handheld digital multimeter (DMM) is a basic tool for ham radio applications. Here is a list of 10 things you can do with a DMM. 1. Check the power supply voltage on the new power supply you just purchased. 2. See if your HT battery pack is fully charged. 3. Measure the current that … Read more