I became interested in retrocomputing about a year ago, and since then my web site’s focus has drifted from mostly military surplus equipment to more general technical content. It no longer makes sense to call my site "Mark’s Green Pages (Mark J. Blair’s Blog of Mostly Military Stuff)" so I have renamed my site to "Mark’s Tech Journal (Mark J. Blair’s Blog of Technical Stuff)".
Inspired by the Enigma World Code Group, I’ve just launched a similar group for M-209 enthusiasts. The home page is at this URL:
It can also be reached from the “Groups” menu under my web page banner.
Please check it out if you are interested in exchanging M-209 cipher messages with other crypto enthusiasts.
My M-209 Simulation Software is now hosted on
GitHub GitLab (note: I moved all of my public repositories from GitHub to GitLab in June, 2018). This means that all past, present and future versions of it will be available in one spot, and users can easily track changes from version to version.
I have had a static web page for many years, but I’ve just moved it over to a WordPress-based blog. The new format adds many features such as searching, tags, comments, and an RSS feed. I’ve ported over most of the content from my old web page with minor reformatting and revisions, and I maintained the original publishing date stamps for the old content. I may also go back and plug in things like pictures of past events that I never bothered to share before, so please forgive me for engaging in a little bit of revisionist history. :-)
I hope that y’all like the new format!