Surprise that WOR Top40 did not go on 710 AM and call themselves "The Big 710"
http://www.musicradio77.com/WOR-FM/history.html
http://www.musicradio77.com/WOR-FM/WORFMairchecks.html
I noticed that WOR chose to put the Top 40 format on FM and not on AM like RKO's West coast AM stations like KFRC and 93KHJ. I know that FM was not popular around this time mainly because the signal was limited. Also AM tends to cover a wider area like KFRC's Signal can be heard from San Francisco to Eureka to the north and as far south as Bakersfield.
http://www.musicradio77.com/WOR-FM/history.html
http://www.musicradio77.com/WOR-FM/WORFMairchecks.html
I noticed that WOR chose to put the Top 40 format on FM and not on AM like RKO's West coast AM stations like KFRC and 93KHJ. I know that FM was not popular around this time mainly because the signal was limited. Also AM tends to cover a wider area like KFRC's Signal can be heard from San Francisco to Eureka to the north and as far south as Bakersfield.