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Moving back to WordPress
I had a self-hosted blog using WordPress a while ago. My experiences with WordPress as a platform and as a community were pretty good. Then I switched to Tumblr when they were brand new, in the hopes...
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This isn’t the first time I’ve seen pricing like this
ebook version twice the cost of hardcover?
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The Second Cooler, a documentary film
The Second Cooler is an amazing film. I’ve been following the production sort of third hand, as I know someone working on the project. Martin Sheen and Microwave Dave? Good projects pull great people....
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Back in business
I changed domain registrars, and this resulted in a hiccup that I’ve now solved. The site was inaccessible for the last few days, but as soon as the DNS records propagate, everyone should be able to...
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Update
Quickly while I have network access, and mostly pasted from an email. Feel free to pass all this to any friends, family or coworkers. The area near us which had the most damage is called Anderson...
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Hams and the responsibility to educate
This is an open letter to all hams involved in disaster planning or recovery. Now that things have settled down a bit after the recent disaster in Madison county, those who participated are beginning...
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Antenna modeling, part 2
Disclaimer: I’m going to start using Amazon affiliate links for books that I recommend. I’ve prepared another video about how to use xnec2c. Here’s the link to the video on blip.tv This one begins to...
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Seriously?
No really? Have I abandoned this blog for that long? I’ve been posting updates on projects and such to g+, but that’s not very discoverable, so I think I’ll come back here and post about some...
View ArticleQRP Labs QRSS/WSPR Kit (Part 1 – the Build)
I recently built and tested the QRP Labs “Ultimate3S” kit, and I wanted to share the experience, including an issue I had. At $USD 135 the Deluxe 6-band U3S set looked like a fun if slightly...
View ArticleQRP Labs QRSS/WSPR Kit (Part 2 – the User Interface)
Continued from Part 1 The user interface for the unit is a two-line LCD display, and two pushbuttons. The LCD is a good looking White on Blue backlit display. There are construction options to set...
View ArticleQRP Labs QRSS/WSPR Kit (Part 3 – Testing)
Continued from Part Two. When I put the kit on the test bench, I found that it didn’t meet FCC Part 97 requirements on any of the six bands: 10, 15, 20, 30, 40, or 80 meters. Part 97.307 requires that...
View ArticleQRP Labs QRSS/WSPR Kit (Part 4 – chasing the problem)
Continued from Part 3 I replaced the 25mm standoffs between the main and filter boards with aluminum ones, and retested. Things got better . . . and worse. It was now passing on half the bands but...
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QRP Labs QRSS/WSPR Kit (Part 5 – mitigation)
Continued from Part 4 I looked at the design of the transmitter again, thinking about where all the VHF energy could be coming from. The transmit signal is generated by the Si5351A synthesizer module,...
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