One important specification for a radio is its selectivity. You want to select only one radio station and reject all the other stations.
Many years ago when a crystal radio was used it heard only one radio station even though its selectivity was poor because there were few radio stations. Now there are MANY radio stations.
I didn't count the AM and FM radio stations near me. Maybe 100? Then selectivity is very important which is not available in a simple crystal radio.
Many years ago when a crystal radio was used it heard only one radio station even though its selectivity was poor because there were few radio stations. Now there are MANY radio stations.
I didn't count the AM and FM radio stations near me. Maybe 100? Then selectivity is very important which is not available in a simple crystal radio.