An 80188 based SBC

Last night I completed my 80188 based SBC-188 build. It is a ECB board designed by John Coffman in the Retrocomputers forum that provides an Intel 80188 coupled with 1Mb of RAM and 128k of ROM. It also…

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Dracblade – A Propeller based Z80 CP/M board

A couple of years ago, a fellow named Dr. Acula designed a neat little Parallax Propeller based board that implemented a full CP/M system providing a Z80 with dual serial, 512k Ram, VGA, PS/2 Keyboard, and SD storage….

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A Z180 based SBC

I recently decided to finish my Z180 based Single Board computer. It is a board named the “N8” designed in about 2012 as part of the then expanding N8VEM series of projects. It was neat because it promised…

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Brazing a Terminal to Stainless Steel Wire

As part of my HF gear, I would like to make some significantly more robust antennas. Most of my work has been done with heavy duty wire, but I would like to make antennas that I don’t have…

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A New Antenna for 40M/20M

(or how I made a nice balun that should last a while) Inspired by an email I saw recently advertising the Chameleon 40/20 antenna (https://chameleonantenna.com/shop-here/ols/products/cha-4020-fd), as well as a review I saw on the HamRadioConcepts Youtube Channel by…

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SOTA Activation Mt Stromlo VK1/AC-043

I am at the stage of life where I get to have Wednesdays off on a reliable basis – It is a wonderful privilege and an opportunity to do much pottering around the house. Last night (Tuesday) there…

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The South Australian Wireless Institute Journals 1959 – 1977

I recently saw a request from a fellow amateur operator in South Australia looking for somebody to take a box full of South Australian Wireless Institute Journals he had archived from between 1959 and 1977. I decided that…

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Blowing up a Yaesu FT-891

Some posts should never need to be written. Here is one of them. I spent the weekend installing my FT-891 into the car – Radio under the passengers front seat, control head onto the dash, and new FC-40…

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Yaesu FC30 Tuner Protocol

Or how I (almost) interfaced an Yaesu FT-891 radio to an Icom tuner. I recently decided to replace my Icom IC708G in the car, as it had a weird ALC fault on transmit. It is afterall, a radio…

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Modern radios get shredded.

Or why we can’t have nice things…. I have always had a soft spot for military hardware – from an era when I was much younger where I got to work on beautifully constructed electronics that was designed…

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