Mike wrote:
"Just looking for a discussion regarding fesign of a great BCB radio."

It has already been done. The SCR 274 N or ARC-5 series included a
receiver which covered most of the AM broadcast band. With a wire
connected to its antenna post, a unique signal appears every 10 KHz
Across the dial. All that`s needed is transistorization. I used one of
the originals with a 12-V dynamotor as a a car radio for years.

Best regards, Richard Harrison, KB5WZI