I've listened to a few radio stations (in and near Mississippi) with '80s music. They are...

WCKW-FM 92.3 (92.3 The Point (http://www.WCKW.com)), New Orleans
This station's format is hot AC, but has plenty of '80s music every weekend: AT40 Flashback, Backtrax USA and 12 Inch Saturday Night
WJKK-FM 98.7 (now bka Mix 98.7 (http://www.98mix.com); format: AC or hot AC?), Jackson
All '80s Retro Weekend: Saturday, 12M-Sunday, 7 pm (including Saturday Night '80s (http://www.saturdaynight80s.com): Saturday, 7 pm-Sunday, 2 am)
WKZW-FM 94.3 (KZ94-3 (http://www.kz94)), Laurel/Hattiesburg
Format: hot AC, with a large amount of '80s music every weekend, all weekend long
WTYX (Arrow 94-7 (http://arrow94.com)), Jackson
This station has a rock & roll classics format, but has The '80s After 8 (8pm-12m), seven nights a week

Recently, New Orleans' WCKW-FM--bka 92.3 The Point (http://www.WCKW.com)--switched to hot AC.

The station was all-'80s, but it failed in New Orleans' latest Arbitron ratings.

But, plenty of '80s music can still be had by 92.3 The Point--especially every weekend.

Sometimes, 92.3 The Point's signal reaches Jackson--about 200 miles north of New Orleans.