ncincy1 said:
I personally think most all AM stations have gone "downhill" in terms of overall reception since the good old days (60's - 80's)...
It *might not* be a simple matter of big-bad “corporate radio” failing to maintain their AM facility... Remember, in recent years these same folks
have REPLACED old tube-modulated rigs with excellent-sounding solid-state rigs that offer much better performance. The integrity of the ground system is an overly-common excuse for a perceived reduction in AM coverage... Not necessarily... I know this because I actually HAD to replace a ground system after the 1993 Mississippi River floods. Prior to, I always bitched about my ground system and coverage... I finally got a NEW ONE and
didn't gain a mile until I installed a folded unipole. It is VERY EASY for a qualified CE to determine when an AM antenna ground system is compromised and significantly affects performance... I highly suspect “corporate” would take proper measures to preserve their coverage if that was the case.
AM propagation has been reduced due to two major factors over the last two decades: URBAN SPRAWL—the construction of buildings close to AM towers that were purposely-located in farm fields decades earlier... This dramatically reduces near-field ground conductivity and thus levels further-out. The electrical noise floor on the AM band is MUCH HIGHER today... Thank your PC, TV, home security system, garage door opener, microwave oven, and aquarium heater for those stray buzzes. This is why AM can’t “cut thru” these days... BLAME THE FCC for not enforcing the Part 15 rules! At night, stations that were once “silent” after dark are now on the air – allegedly with flea power—RIGHT

This creates additional nighttime ingress of objectionable co-channel interference that was not a factor decades ago... Many of these stations operate with “day power” [especially when a high school football game is being covered]... Again, blame the FCC!