Kat, by the 1960s, not only was power reduced, but the old clear channel US stations were crowded by new stations, many lost their clear channel, signal patterns were limited, and interference from all sorts of power grids, and noise signals emitted from all sorts of electrical equipment, made reception poor. (Whew! Grade F on that sentence)

In 1930s New Mexico, we were able to listen to these stations across the country. Wheeling W. Va required a good night, but Chicago, Nashville, Baton Rouge, N. O., the big one in Cincinnati (WLW) were available most nights. Saturday Night was Barn Dance Night and Opry for many of us.
Amos and Andy was the most popular program (everything stopped; at the Elks Club the poker tables emptied as everyone gathered around the radio console).
We even listened to the Rose Bowl game direct (from KFI or KPO, I can't remember which) although static often interferred (daytime). But the sportscasters were good at recaps and we could catch up with the action.
During the week the Border stations were king. The tiny local station was poor. One program was Chinese music paid for by a Chinese cafe owner.