Friday, March 5, 2021


Retro Computing

rom chip

How I Confirmed my Coco 3 ROM Was Dead

As part of my long struggle to repair my beloved Radio Shack Color Computer 3, I decided to test the ROM chip out of circuit.   My...


Does Linux have a Console-only IDE?

How do I get started using VI on Linux?


Ham Radio

oscilloscope screen impedance

What’s the Deal with 50-Ohm and 75-Ohm Coax Cable?

Have you ever wondered this? I've built dozens of dipoles, a couple of loops and at least one Moxon antenna for ham radio work, bu...