Jeff Tranter's Blog

JMON  is a machine language monitor program I wrote for the Briel Replica 1, a replica of the Apple 1. It was only natural to want to port i...

My latest retrocomputing project is building the Superboard /// computer kit by Briel Computers. It is a replica of the Ohio Scientific Su...

I finished "recapping", i.e. replacing the paper capacitors in the Heathkit RX-1. Some were a little tricky to get at when the uni...

My latest restoration project is a Heathkit RX-1 "Mohawk" Amateur Radio Receiver. I've created YouTube video that descri...

While waiting for my Briel Superboard III kit , I was reminded of a book that I blogged about last year. The Visible Monitor program in t...

The Zenith Trans-Oceanics were an extremely popular (although expensive) series of shortwave portable radios made by Zenith from the 1940s t...

The first computer I owned was an Ohio Scientific Superboard II. Bought in 1980, it was the only reasonably complete computer on the market...