Hardware

1N4148 diode as RF switch

Feb 24, 2018 · 4 min read · hamradio Hardware technology ·
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For a recent experiment I was using BA389 PIN diodes to switch low power RF signals. I was asked why I didn't use an ordinary 1N4148 for that. Since I didn't know what an 1N4148 would do when used like that, and I also didn't really know what a BA389 actually does, I decided to do some measurements.Aren't diodes …
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Morse Code is not dead (yet)

Apr 9, 2013 · 5 min read · HAM Radio Hardware technology ·
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Not everybody understands why I am trying to learn morse code on lcwo.net. Maybe I'm not even sure myself. But most people seem to think morse code is absolutely dead. I could tell you that's not the case, but it is far better to find out for yourself. To be able to do that you need access to a radio which can receive …
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Join, don't judge

Mar 3, 2012 · 5 min read · design Hardware opinion ·
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Like many people, I like to dine in a good restaurant, where the mood is mellow, the waiter is a fine host, and the cook is passionate about good food and nice presentation. The courses are perfectly timed with your appetite, and each shiny polished plate of food contains the best looking, smelling and tasting food …
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The Useless Machine

Dec 18, 2011 · 1 min read · DIY Hardware useless machine Workshop ·
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The past year, you may have seen me tweeting some "#secretproject" tweets. Last week, the project was finally revealed, and here is the video, in case you've missed it: [youtube=http://www.youtube.com/watch?v=7nkebVQL5zc] This is what is known on the internet as a "Useless Machine" or …
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1N4148 diode as RF switch

Morse Code is not dead (yet)

Join, don't judge

The Useless Machine