brainwagon "There is much pleasure in useless knowledge." — Bertrand Russell

10May/090

Updated Map of Stations Heard on 30m WSPR

In the last few days, I've heard a few stations in countries I hadn't seen before, like Guatamala, Brazil, and Portugal. Here's my updated map:

Stations heard on 30m via WSPR

Stations heard on 30m via WSPR

Filed under: Amateur Radio No Comments
10May/091

Happy (Birthday to Me|Mother’s Day)!

Happy Birthday!

Happy Birthday!

To all the moms out there in the world, thanks for all the wonderful things you do for all your children. And while I'm at it, happy birthday to me!

Filed under: General 1 Comment
10May/090

Ionisation Chamber Radiation Detector from VK2ZAY

Alan, VK2ZAY, has a really nice blog with all sorts of interesting experiments. Today's fun installment was a radiation detector that's just about as simple as can be imagined, ao aimple and inexpensive that I am pondering the possibility of using a similar circuit as part of a sensor for a balloon launch. Very cool:

Alan Yates' Laboratory - Ionisation Chamber Radiation Detector

It also made me realize that I didn't understand how a common smoke detector (which I know includes Americium, but little else) actually worked. Wikipedia of course comes to the rescue, and tells me the basic idea.

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