DIY Zilog Z8000 computer that runs CP/M-8000 with 1MB flash, 1MB RAM, and a couple serial ports.
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A new calibrator and a new amplifier for an old Drake
Drake R-4C crystal calibrator, sherwood-style amplifier, and other modifications
Read MoreRaspberry Pi Based DDS-VFO For Drake 4-Line Twins
A DDS-VFO digital synthesizer for Drake 4-Line Twins (T-4XC, R-4B, R-4C, etc). Powered by a raspberry pi. Uses alphanumeric display and rotary encoder.
Read MoreAdding a panadapter to a Drake R-4B Ham Radio Receiver
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! …
Read MoreHeathkit 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.
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