Ham Radio

Charger Radiated Emissions

I usually have a respectable HF noise floor at home, for which I count myself lucky in today’s sea of cheaply made switching power supplies. However, we were expecting some severe winter weather a couple of weeks ago (it never materialized, but that’s beside the point) and I noticed that my noise floor had gone […]

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Baofeng Cemetary

As of the date of this post, you can get a Baofeng UV-5R for $28, or buy two for $50. Dirt cheap. I bought my first Baofeng UV-5R back in 2012 when they were priced around $62 on Amazon. I thought this was a cracking deal. Upon testing the thing out, I found that the […]

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UR6QW Processor with Dynamic Microphones

While this post is written with the UR6QW processor in mind, it contains information which is widely applicable. There is some concern about connecting dynamic microphones to devices which commonly use electret condenser microphones. I believe this requires some clarification. Electret condenser microphones generally require about 3 to 5 volts DC to supply an internal […]

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DMR – Digital Mobile Radio

DMR has taken off in our local ham club, and around the world. If you just want someone to talk to, there is always someone out there, somewhere around the world. If this is what you’re in ham radio for, then you’ve got it made. In these days of sunspot cycle low, it’s getting harder […]

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My IC-7300 TX Audio Setup

The IC-7300 has very good transmit audio out of the box, with the stock microphone. With a little tailoring to your voice tone, it can give excellent results. It seems though, I’m never happy with my transmit audio settings. Even though I am told I have a face for radio, maybe I’ve just not got […]

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Radioddity GD-77: A look inside

After many people telling me that my blank screen issue is down to a loose ribbon cable, and since Radioddity are replacing my defective GD-77, I saw no harm in having a look inside. After all, if it’s such an easy fix, why not? I would like to report that I found no disconnected ribbon […]

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Radioddity GD-77 Blank Screen

I recently bought a Radioddity GD-77 DMR handheld radio. Initially, I was very happy with the performance, if a little quirky. Its quirkiness inspired me to write a post about how to set it up and write a basic configuration to it. However, six weeks into ownership, I turned it on and was greeted by […]

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Antenna Tuners, Impedance Matching, and SWR

Antenna tuners seem to be some of the most misunderstood devices in all of amateur radio. In this article, I’ll try to explain what is happening when you use an antenna tuner. I’ll try not to get too much into mathematics, and I’ll also try to squash a few myths. I really don’t like the […]

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PL-259 Soldering

Do you solder the coaxial shield to the connector body when installing a PL-259 plug? What are those holes really for? I’ve been installing PL-259 plugs onto coaxial cable since I was about 16, and I’ve never soldered the body of the connector to the braid. I’ve not had any problems from not soldering the […]

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Radioddity GD-77 Setup

Introduction I bought one of these on an Amazon Deal for about $64. I started to wonder if it was actually such a good deal after fighting with it for a while. It’s pretty good really. Just quirky. (edit – the GD-77 failed me, six weeks after I bought it. Radioddity is sending me a […]

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