Radio & Records pre 1994 chart formula

[Whi$tlin' Pete]

Does anybody know for sure how the R&R chart rankings were compiled precisely before monitored airplay began in 1994?
They obviously must have used the number of stations playing a given song, and must have weighted the stations per number of listeners. They listed the song rotations as "Light" "Medium" and "Heavy" so this surely was weighted in as well. I'm wondering if anybody knows how this worked for sure. Thanks for any input.

[somelikeitwhen]

I know the year-end charts were just simple inverse points without the frozen weeks. I compiled the 1993 one myself to test it and Hero was the only song that was a bit off (they probably put it higher because of how big it was). Maybe the top song or songs got a few extra points from ranking the station playlists. I'd like to take a look at an issue from the 90s or 80s just to check it out.

[Cerebro]

As far as I know, stations on the reporting panels submitted their ranked playlists, inverse points were assigned to the lists, and the points were added up to create the charts. If there was any other formula at play, here, I've never been aware of it.

[Whi$tlin' Pete]

Cerebro, do you know this for sure? Did you find that out from someone at R&R? So no weight of the audience impressions was factored in at all then if that's the case. Interesting.

[Devil Marlena Nylund]

I've heard that too. Mostly since the technology wasn't there to actually track anything at the time.

[johnnywest]

I don't remember seeing anything about light, medium and heavy but I haven't seen that magazine in years.

[radio2009]

A good portion of old issues of R&R Magazine has been uploaded to this website.

www.americanradiohistory.com/RandR_Magazine_Page_Range_Guide.htm