Reading Paper Tapes in 2022

I have a couple of old paper tapes – I also have an ASR33 teletype, which is more than capable of reading a tape, but making the ASR33 operate correctly is a labor of love which I will…

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Xiegu G90 Data

One of the delights with having multiple portable HF radios is the capacity to use different specific features that suit a particular radio over another. One particular radio that I like, is my Xiegu G90, which is a…

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A 5/8th Wave Antenna for 146 Mhz.

Last weekend I did some work for WICEN with the National Capital Rally, and during the drive in I remembered how terrible access to the 146.900 Mhz repeater on Isaacs Ridge was for me in the Xtrail. Normally,…

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My IMSAI is alive!!

It’s been an epic week. I got my IMSAI S100 system running. I replaced the 120v linear power supply with a couple of modern switchers – now the system is sooo much lighter, and I can plug it…

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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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