KIVA had a 3.6 in Fall '85 which seems pretty good for a new sign-on so they must have spent a lot on advertising but it slid down to 2.6 then 1.8 so they could not hold on to their audience. Wikipedia mentions that it was auctioned off for nearly 2 million in 1986 to something called Daytona Group.
Daytona Group, I believe, was led by Carl Tutera. It owned a handful of other stations, including KRGE 1290 and KRIX 99.5 in the Rio Grande Valley (Brownsville/McAllen/Harlingen). Seems like one of the owners was also a part-owner of First City Broadcasting.
Maybe they also owned that Tampa station?
Power Pig in Tampa was owned by Jacor. I don't think Daytona owned anything in Tampa, though I can't be 100% certain.
It was called "Power 105" and was a top-40 format and had low 4s to mid 3s from 1987-89 which might be considered good by todays standards. Of course when 105.1 signed on 97.3 launched as KKSS and is said to have initially aimed a KOB-FM as well.
It was also going after Q106, which signed on around the same time. The mid-to-late 80's saw a lot of sign-ons and move-ins to Albuquerque. All of those changes are why no one can get much of an audience there today. Not sure if it's still the case, but, in 1995, Albuquerque had the most stations per capita. It was just ahead of Salt Lake City and Colorado Springs.
98.5 also moved in at that time is said to have started as KKHJ although the FCC shows no record of that call-sign on that frequency but it was listed in the Spring '86 report at just a 0.4. KKHJ was also trying to go up against KOB-FM as mentioned in this Journal article:
Two More Stations Seek Slice of KOB Market - Newspapers.com
I don't remember 98.5 being KKHJ either. I remember it being KKBR before it became KRBL. Seems like it was KTNM "The Mountain" for a brief period, too, before becoming "Big Oldies" in the mid 90's. I know it had a pretty difficult time for a few years as KRBL.
All three of those signals appear to have been sold in 1986 and since no one got anywhere challenging KOB-FM it appears KNMQ became the new target for KIVA and KKSS.
I remember 105.1 and 105.9 signing on around the same time and both being top-40/CHR. Not that I couldn't be wrong as I was a pre-teen and teenager at the time.
The shift to more urban music apparently paid off for KKSS in the late 80s but when KNMQ flipped to country in early 1990 they surged to the top while KIVA plummeted with that satellite format.
I don't remember KOLT 106 doing super well, but it did okay for awhile. Seems like it had about the same 12+ share it had as Q106, but the audience was older and easier to sell. I don't remember it putting much of a dent in KRST, though.
It appears 105.1 was sold for just 300k in 1991 which is way cheap for that station so there must have been more to that deal.
If I remember correctly, Tutera bought his partners out. I'm thinking he was Star of New Mexico. KIVA and KZRQ switched calls, and the Z-Rock format was moved to 105.1 from 1310. Around that same time, ABC/SMN stopped marketing Z-Rock to AM's, which was somewhat ironic as Z-Rock often said it was, "Too loud for FM."
Z-Rock was also a satellite feed but it seemed to be more competitive in larger markets and perhaps a result of more fragmentation in rock radio at the time. I heard it was also run by the same guy who had some role in the AOR format in the 70s.
Seems like Lee Abrams was one of the brains behind Z-Rock. It was fairly successful after it started getting marketed to FM's only, but it mostly ran its course by 1998. When ABC/SMN pulled the plug, it offered music logs and scheduling assistance to the stations that previously aired the format, and a handful kept up the effort for a few years. Seems like there's still a Z-Rock somewhere in Northern California, or at least there still was within the last 10 years. Champaign-Urbana and Quincy-Hannibal ran Z-Rock locally for a few years afterward, but, by 1999, 105.9 in Champaign was classic rock WGKC. Quincy-Hannibal was still running local rock last time I was up there (about 10 years ago), but it was calling itself "105.9 The Grizz."