Some personal experiences.
Classic Hallicrafters SX-28a receiver with a PM-23 speaker. (World War II)
a few items of a technical nature.
Click on the link above, for a list of personal articles and notes on various things of a technical nature.
Speed of Light – a scope display of the time difference between a single transmitted pulse of light and it’s reception, over a distance of about 70 feet.
Some pictures from my U.S. Army stint in Vietnam.
1970 – 1971.