DK7IH HF Radio Engineering – Projects for the amateur radio engineer. Hardware, software, electronics and test equipment for the amateur community.
Type A Mk.III (A3)
In this post I have explained a DC power controller circuit which can be used for controlling the power of motors and lamps with maximum efficiency. By
Inforce Computing announced their 6501 Micro SOM system-on-module based on Qualcomm Snapdragon 805 processor in Q2 2015, and the company informed me that
Computing in The Fast Lane is how Stewart Cheifet presented the Intel 80386 on Computer Chronicles in 1987. And indeed, the 386 was a fast chip. But as powerful and innovative this microprocessor was, users would inevitably find it slow at some time. And when floating-point math is involved, that time came even faster. Besides…
This week’s post is a bit special as it is a crossover between two of my many collections: Electronics & DIY and Vintage Computers. During the last two weeks, I’ve been working to expand the memory of my enhanced Apple //e’s memory to 4MB. If you just told yourself, “so?”, it certainly means that you didn’t…
Radio receiving set AN/GRR-5
On the edge of the Arctic Circle, where the River Lule meets the Gulf of Bothnia, lies Facebook’s newest data center in Luleå, Sweden. Launched earlier this week, the center is now han…
GIS
Hi airtangent thanks for your post. I only ask for a substitude in case of a damage because it`s hard to get a MAT02 or the SSM2220 (as reserve). I have...
A new book and exhibit highlight IBM’s Kingston facility and its effect on the tech industry — and the region
Универсальный комбинированный измерительный прибор *Ц-435* выпускался с …
Ампервольтомметр *Ц-438* с 1965 года выпускал Житомирский завод *Электро…
Energy-efficient data center and environmental cooling options to ensure the safety of your equipment as well as the health and comfort of your employees.
Using Arduino to draw images and animations on the old analog oscilloscope. Source code: https://github.com/cazacov/Arduino/tree/master/due/Oscilloscope
Audio Note Japan Kondo Overture 2
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De AMPLIFIER RF No. 2 MK III
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