I'd like to know more about the early UHF stations in DFW that aren't at all related to the current stations on the same channels.
KFWT Channel 21, Fort Worth
KMEC Channel 33, Dallas
KBFI Channel 33, Dallas
Granted, they were all so short-lived, there might not be much to tell.
Your last sentence is indeed correct.
I've written more than a dozen station histories for the UHF Television website, and there are some that never even got started because we lack information on them.
I can track the pre-broadcast history of any station that received its construction permit between 1952 and the 1980s, because
Broadcasting was reasonably accurate in publishing FCC filings, dismissals, and grants. I can track FCC actions in the 1960s and 1970s which rescinded CPs en masse. I can (usually) get the start date of operation from the Yearbooks.
What I can't get are details of station operation unless a local newspaper regularly reported on a station's activity, or the station ran print ads in the local newspaper ... and that newspaper is in one of the archive sites (Google, Newspapers.com, NewspaperArchives.com). Most of the "personal recollection" sites are either limited in data or provably wrong. And we all know how error-riddled Wikipedia can be unless facts are verified from the same external sources I've just referred to.
I'll use channel 33 in Dallas as an example. Here are my notes from my initial research on every UHF that got a CP in the first three decades of their issuance:
CP issued 4/17/67 and subsequently requested calls KMEC-TV
Went on-air 10/1/67
Went dark 10/25/68
Resumed operation 2/21/72 as KBFI-TV
Went dark a second time 12/16/72
Purchased by CBN and resumed 4/16/73 as KXTX
Acquired KDTV on channel 39 and moved operations to that channel 12/20/73, taking 33 dark for a third time
A new CP was issued 6/13/77 and calls KNBN-TV assigned
Began operation 9/80, subsequently changed calls to today's KDAF
I was able to find some print ads KMEC-TV ran in the newspapers within their coverage in mid- to late-September, 1967 (right before they went live). It was the same ad in all the papers and gave very little detail about the station, saying only "first run movies, best in live local sports, latest news and weather ... local live programs in color". The entire bottom third was instructions on how to use a UHF tuner.
What listings I could find in the Denton, Grand Prairie, Waco and McKinney newspapers during 1968 showed KMEC-TV programmed as a typical independent UHF scrambling for programming in a market with all three networks on VHF and an indie V (KTVT/11). Old movie at 4:00. Bozo/Cartoons at 5:30. Old movie at 6:30. Old movie at 8:00. Newscast at 9:30. Old movie at 10:00. All the movies mid-1950s or older vintage.
A whopping five news stories in the newspapers I had access to. One is a picture of the station's Bozo posing with young leukemia victims at a fundraiser; one was about two Irving High School students being selected for the station's teen advisory board; a third was a press release from a local minister about his weekly religious news program on Sunday afternoon; and a fourth was a two-sentence mention of the contestants in the Miss Grand Prairie pageant appearing on the station. The announcement of the station going dark and its pending sale was an AP wire service report, not even by a local reporter (and it said the station would resume early in 1969).
Most of what I found about KXTX pre-channel 39 was the announcement of CBN's purchase and their schedule, which was an early afternoon sign-on to run Jim & Tammy Bakker and the 700 Club, then a couple of hours of cartoons like Mighty Mouse and Magilla Gorilla, followed by Andy Griffith, Mayberry RFD, Courtship of Eddie's Father. In prime-time, 700 Club rerun and Jimmy Swaggart.
Not much to make an article out of.
Aside from that, nothing but an ad that ran in all the papers at the end of June hawking the Bozo show and inviting kids to send in their name and address if they wanted to be on the show.
All that marks the ten months of KBFI-TV's life are two articles: One, a press release by the local Lutheran church about a series they were sponsoring and two, an brief article about a monthly 15-minute program the station was doing in conjunction with the McKinney Jobs Corps for Women.