Monthly Archives: March 2025

Boeing Video–Transistor Bulk Resistances

38 years ago (1986), yours truly produced a video with the help of the Boeing Television Studio describing in detail the lab procedure to solve for the bulk resistances of the bipolar junction transistor (BJT). Sadly, the audio is a little distorted but I may be able to improve that at a later date. The video was sponsored by the… Read more »

WD8IEL Repeater Periodic Time Announcement

Up until today, the WD8IEL Chelsea Repeater has been programmed to announce the time at one minute after the hour, hourly, from midnight to midnight. In addition, each day at midnight it announced todays day and date together with the time. The midnight-only announcement remains unchanged. However, starting today the hourly announcement has been silenced from midnight to 6 AM… Read more »