Category Archives: Ham Radio blog entries

KE0OG Health Update

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

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My QST Article, “Exploring Radio Mathematics”

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

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Unusual J-pole Antenna (Ask Dave 302)

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

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Amateur Extra Videos Once Again Available on Thumb Drive

The Amateur Extra training videos have been updated to the 12th Edition of the ARRL Extra Class License Manual for Ham Radio, and are once again available for purchase. Please note these are the same videos that are on YouTube, … Continue reading

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Website for info about DSTAR

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

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

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Ideal Stripmaster Wire Stripping Tool

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

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.

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Phoenix Area Source for Used High Wattage Resistors

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

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

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