Category Archives: Ham Radio blog entries

KE0OG Health Update

Posted on November 15, 2020 by dcasler

Still recovering from bad episode of gastroinstestinal bleeding. Very anemic at the moment, on oxygen, at home, but trying to walk more than 10 feet leaves me exhausted and completely out of breath. Had 3 units of blood last week. … Continue reading →

Posted in Ham Radio blog entries | 68 Comments

My QST Article, “Exploring Radio Mathematics”

Posted on October 14, 2020 by dcasler

My article on exploring radio mathematics was just published in the November issue of QST. Unfortunately errors crept in, which has generated lots of emails. I put together a page on my website that collects and collates the errors. Check … Continue reading →

Posted in Ham Radio blog entries | Tagged , | 1 Comment

Unusual J-pole Antenna (Ask Dave 302)

Posted on September 22, 2020 by dcasler

Here’s the drawing that goes with Ask Dave 302. Click here to get the pdf.

Posted in Ham Radio blog entries | Tagged , | 2 Comments

Website for info about DSTAR

Posted on July 12, 2020 by dcasler

Brad Rich provides this link for those wishing to learn more about DSTAR. Note it not only has lots of good info, but lists other links as well. Here is the link; you can just click on it to go … Continue reading →

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Oggie Harry Rundall, AC3EK, Discusses Elbow Connectors

Posted on June 23, 2020 by dcasler

Harry reports: “I had asked about erratic power behavior on the ICOM 7300 on the mode FT8 last Saturdays Q&A. Well it turns out it was the elbow connector I had in line on the back of the rig to … Continue reading →

Posted in Ham Radio blog entries | 3 Comments

Ideal Stripmaster Wire Stripping Tool

Posted on March 28, 2020 by dcasler

In today’s livestream, I promised to put up a link to my wire stripper. They’re a bit expensive, but I don’t know how I ever lived without it! Note: if you purchase through this link, you’re helping to support my … Continue reading →

Posted in Ask Dave, Ham Radio blog entries | 5 Comments

Samlex SEC-1235 Power Supply Manufacturer’s Markings and Certifications

Posted on February 20, 2020 by dcasler

A YouTube viewer asked what the manufacturer’s assertions are regarding certifications. Here’s a photo of the label on the bottom of my unit.

Posted in Ask Dave, Ham Radio blog entries | 1 Comment

Phoenix Area Source for Used High Wattage Resistors

Posted on January 11, 2020 by dcasler

Oggie Dirk van Dijk notes that he’s found a variety of high-wattage resistors good for dummy loads at Apache Reclamation and Electronics in Phoenix. Their phone number is (602) 254-0613.

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NanoVNA “Getting Started Manual” link

Posted on January 6, 2020 by dcasler

Oggie Lee Johnson, N4WYE, sent this link to a manual for how to use the NanoVNA. You can use the NanoVNA as an antenna analyzer. Click here for Part 1. Click here for Part 2. (Links updated 1 July 2020.) … Continue reading →

Posted in Ham Radio blog entries | 5 Comments

How to get the latest Brandmeister DMR database for your Anytone D878UV

Posted on November 23, 2019 by dcasler

Oggie Roger Shults, KE4BFG, provides two helpful links. The first is a tool to download the latest DMR database from Brandmeister, and the second is a video that describes how to use it. If you use this tool frequently, you’ll … Continue reading →

Posted in Ask Dave, Ham Radio blog entries | Tagged | 1 Comment