In this post, I add a panadapter to my Drake R-4B. Background In late 2021, I decided to become a Ham Radio operator. This involved passing a couple of tests — my technician and my general exam. It took a little bit of study, and soon being an amateur radio operator was within my grasp! …
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Heathkit GC-1000 Most Accurate Enigma
Restoring, repairing, and improving the performance of a Heathkit GC-1000 Most Accurate Clock. This clock uses the WWV broadcast signal to automatically set the time.
Read MoreTandy Color Computer Resources
This page is where I’m going to briefly collect all my Coco-2 thoughts. Starting with my videos on the subject, Some history The Coco-2 was the first computer I ever owned. Not necessarily the first one I ever used — that was either the IBM PC 5150, or the Convergent, or probably some 8-bit Atari …
Read MoreSound and Speech boards for the Epson QX-10 CP/M Computer
Speech and Sound add-on cards for the Epson QX-10 CP/M Computer.
Read MoreAn IDE Adapter for the Epson QX-10 CP/M Computer
A compactflash/ide adapter for the Epson QX-10 CP/M Computer system, uses a slightly patched version of the BIOS drivers for the Comrex Comfiler hard drive.
Read MoreBattery operated ESP8266 Wifi Button to trigger my sprinkler system
Use a battery-operated ESP8266 ESP-01 module as a wifi trigger for home automation.
Read MoreA basic and RAM board for HP-9000 series computers
In this post, I build a Basic Flash and RAM board the the HP 9000 series of computers: Purpose Lately I’ve been playing with old HP computers such as the 9836, 9920, and 9000/310. These computers typically do not come with ROM basic or any other ROM operating system. Without a ROM board, you have …
Read MoreAssembling a thin client to serve as an HPDrive
In this video, I put together a T5745 thin client with a PCI expansion adapter and a GPIB adapter. Background I’ve started playing with some HP 9000 computers, both the series 200 (9836, 9920, etc) and the series 300 (model 310). With a few exceptions such as the 9836, these computers often don’t include built-in …
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