Archive for June, 2015:

2015-06-30 RF Interference and LED Lighting

I talked to a club member about LED lights and how much money they saved in electricity.  But he said he stocked up on incandescent lights before they were banned so he could have them for his radio room.  He has had problems with LED lights causing RF interference with his radios, so he went

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2015-06-23 Rainbows on TV screen

I took a photo of a TV screen with a white LED shining at it. In each of the four corners there is a little rainbow made by the reflection from the screen.  I may have seen the reflection but I never noticed the rainbow before.  I thought this was interesting; it’s like looking at

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2015-06-19 U of Cambridge Computer

The University of Cambridge computer circa 1949. Back then the computer took up the whole room. It’s difficult to imagine that nowadays we have thousands of times more computing power in our pocket.

2015-06-02 Batterizer Claims 8x Battery Life

Thanks for the article, QS.  It shows a whole lot more than Batterizer’s website.  Now that I see what it looks like and how it works, I’m more convinced that it’s not snake oil. According to the article they have been able to miniaturize the circuit.  They say the circuit has been around for awhile. 

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2015-06-01 Brains Of A Cricket

Late last month I had to discontinue my credit card for an unrelated reason and get a new one.  I had no problems changing with T-Mobile.  I called up the Cricket Mobile service and had them change the CC number.  But a day or so later I got messages to the contrary, so instead of

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