Showing posts with label amateur. Show all posts
Showing posts with label amateur. Show all posts
Thursday, July 22, 2021

On calibrating up a ubitx, or "why the hell is this so complicated"

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 I've built a few of ubitx/bitx40 radios over the last couple years. I built one of each for me, and a couple for other hams. The bigges...
Friday, July 24, 2020

RFI from crappy electronics, or "how's this sold in the US?"

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I picked up a cheap charging cable for my Baofeng UV-9S. ( https://www.amazon.com/gp/product/B07TSDSQ4Z/ ). It .. well, it works. But it m...
Friday, September 27, 2019

Fixing up KA9Q-unix, or "neck deep in 30 year old codebases.."

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I'll preface this by saying - yes, I'm still neck deep in FreeBSD's wifi stack and 802.11ac support, but it turns out it's s...
Sunday, July 15, 2018

Restoring a TS-430S, or "dry joints and stray RF: a tutorial"

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I recently acquired a TS-430S HF transceiver. The seller claimed the FM board and full complement of filters worked, but no display, buttons...
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Monday, December 25, 2017

More TS-440S hijinx, or "ok, what if you wanna homebrew a digital hookup?"

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I've been homebrewing digital hookups between my amateur radios (HF, VHF, UHF) and a FreeBSD PC. It all ... mostly works. There's on...
Tuesday, October 10, 2017

FreeBSD and APRS, or "hm what happens when none of this is well documented.."

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Here's another point along my quest for amateur radio on FreeBSD - bring up basic APRS support. Yes, someone else has done the work, but...
Monday, September 11, 2017

Fixing up TS-440s rigs

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I've been teaching myself HF electronics and antennas lately. I thought I'd go write down some of the things I came across whilst ti...
Sunday, May 7, 2017

gqrx on freebsd

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I'm still tinkering with my own SDR code in C, but I decided I'd give gqrx a go. It sports a simple UI to visualise things as well a...