k7elp60
Active Member
I once heard of a fellow that could hear the sounds of AM radio stations when he got close to the transmitters, seemed like the cause was a filling in one of his teeth was a good detector.
I sure do remember the galena crystal and the cat whisker for the detector.
I also remember when the CK722 transistor was available commercially. As I recall one cost me about $4.00. To a teenager in the early 50's that was a lot of money.
I sure do remember the galena crystal and the cat whisker for the detector.
I also remember when the CK722 transistor was available commercially. As I recall one cost me about $4.00. To a teenager in the early 50's that was a lot of money.