Here's the quick rundown of Top 40 on AM in Los Angeles:
1955: KFVD (1020)
1955-1960: KPOP (1020)
1958-1968: KFWB (980)
1958-196?: KDAY (1580)
1958-1962: XEAK (690)
1959-1971: KRLA (1110)
1965-1967: KBLA (1500)
1965-1980: KHJ (930)
1969-1971: KDAY (1580)
1972-1974: KROQ (1500)
1976-1979: KTNQ (1020)
1977-1984: KFI (640)
1982-1983: XETRA (690)
KFVD changed calls to KPOP during 1955. When Storer bought it in 1960, the calls were changed to KGBS and the station went MOR. Over the years, they'd flip through Country and Adult Contemporary before finally getting authorization for nighttime broadcasting and returning to Top 40 as KTNQ (TenQ).
KFWB was the first major Top 40 station in the market. Programmed and marketed by Chuck Blore, the station rocketed to #1 in a matter of months. KPOP, KDAY and XEAK (The Mighty 690) didn't stand a chance. It wasn't until 1963, when KRLA established itself as the surf music authority, and then imbedded itself in all things Beatles the following year, that KFWB lost its hold on the top. More competition from KHJ (see below) in 1965 made it even tougher. By 1967, Crowell-Collier sold to Westinghouse (Group W), which took the station virtually MOR in the daytime while letting the night jocks verge on album rock, all of which was simply treading water to a format switch to all-news in March, 1968.
KRLA went Top 40 in 1959, but it wasn't until four years later that it really caught fire...with a combination of a more contemporary sound, more local music and several jocks that were refugees from the Chuck Blore school (Emperor Bob Hudson, Ted Randall and Casey Kasem were all at KEWB, Oakland). But there were only two and a half years at the top before KHJ's Boss Radio swept the Southland. KRLA never fell out of the Top 5, and it looked like it might re-take the lead in 1969, but ultimately, KHJ won and new PD Shadoe Stevens (who crossed the street from a 9-Midnight jock shift at KHJ) took KRLA album rock.
KBLA debuted with Top 40 in February of 1965, facing long odds against KRLA with an inferior signal. The odds got worse with KHJ's arrival two months later. It lasted just over two years, and then KBLA went Country as KBBQ.
KHJ hit the ground running and never looked back. Within a year (some say six months), they were #1. The tight, streamlined format made all else seem too talky, too gimmicky. KFWB and KBLA dropped out of true competition with KHJ in 1967. KRLA lost its footing and, apart from 1969, never quite got it back...and they were gone by 1971.
Apart from a 3-year half-hearted challenge from signal impaired KDAY (which flipped to album rock in 1972), KHJ had AM Top 40 all to itself from '71 until Labor Day, 1972...when KBBQ flipped back to Top 40 as KROQ. It had star-power jocks (Charlie Tuna, Sam Riddle, Jay Stevens, Steve Lundy, Jim Wood, Steve Sands, Jimmy Rabbit), but the same signal that didn't work from 1965-1967 and much larger overhead. Within six months, paychecks were bouncing. Within a year, Tuna and Stevens had bolted across the street to the first FM Top 40, KKDJ (102.7). And within a year and a half, KROQ was dead as a Top 40.
KHJ had the format all to itself (at least on AM) again...helping it weather the departures of Robert W. Morgan, The Real Don Steele and Bill Drake himself in mid-1973 (they surfaced in December of that year at L.A's second Top 40 FM, KIQQ...K-100 (100.3)).
Even though the post is about AM Top 40, this is a good point to note that KKDJ was hot and getting hotter in the Summer of 1973...but K-100's arrival split the available audience for FM Top 40 and both stations failed...it was 1982 before anyone tried to launch a new Top 40 on FM again. Ironically, that station was KIIS (102.7)...the old KKDJ.
The next challenge was not until December, 1976 and the launch of KTNQ (TenQ). Basically a child of the old Buzz Bennett "Q" format, but about four years after that format had peaked in the rest of the country...and with some differences, including a much looser (some said chaotic) approach to music. Despite generating some teen buzz (with jocks like The Real Don Steele, Rich Brother Robbin, Beaver Cleaver), it never quite took off...and two and a half years later, the station was sold and flipped to a Spanish-language format.
A more serious threat to KHJ was KFI, where ex-WLS, Chicago PD John Rook gradually evolved the station from its Adult Contemporary format to Top 40...gaining new audience while blowing off as little of the earlier listeners as possible. Rook, who'd worked with Lohman and Barkley in Denver in the early 60s, kept them on even after the switch to full-blown Top 40, as the other AC jocks left, replaced by stellar talent like Eric Chase, Jackson Armstrong and Big Ron O'Brien.
For KHJ, KFI moving in on the adult side and KTNQ grabbing the teens was big trouble. When Charlie Van Dyke left for Dallas in May, 1977, KHJ brought in Michael Spears from KFRC as PD. Spears tried to position KHJ as more of an 18-49 station...which accelerated the teen erosion. Spears left in six months, replaced by John Sebastian, who severely restricted DJ talk, dropped the jingles and played album versions of hits.
The numbers went up in the April/May 1978 Aribtron, making KHJ the #1 contemporary (Top 40, Album Oriented Rock or Adult Contemporary) music station for the first time in a year (since Van Dyke's departure, KHJ had trailed KIIS (AC) in July/August 1977, KIIS and KLOS (AOR) in October/November 1977 and KIIS , KLOS and KMET (also AOR) in January/February 1978). But in July/August 1978, KHJ lost half a point and fell behind KMET and KMPC (AC). Sebastian was gone in the fall.
New PD Chuck Martin brought back the jingles, took the restrictions off the jocks (the only survivor from the year before was Bobby Ocean) and moved in more of a rhythmic direction with the music. But KFI beat KHJ in January/February 1979, and stayed ahead. Even KTNQ, on the verge of going Spanish, managed to beat KHJ in its last month of Top 40.
KTNQ went Spanish in August, 1979. In October, 1980, KHJ went Country....leaving KFI as the only AM Top 40 until XETRA's revival as "The Mighty 690" in the early 80s. As noted in an earlier post, XETRA actually beat KFI in one book...and by the time that battle was settled, it didn't matter. Top 40 on FM was viable...with KIIS-FM beginning a legendary run that continues today.
---Michael Hagerty