> One of the UHF home shopping channels now has those call
> letters.
Not any more. KVVV was the call for Channel 57 when it ran ValueVision, but that station flipped to KAZH Azteca America several years ago. The KVVV calls then went to the low power Channel 53, which was a repeater for KAZH when 57 was still transmitting from the Alvin area tower. I think 53 has been off the air since 57 moved to their new Missouri City stick in 2003--I've seen nothing on 53 the times I've checked since then.
KVVV Channel 16 was an early failed UHF station, licensed to Galveston, IIRC.
To get to the ad, go to the homepage first (without the / suffix) then click on the "Early Texas UHF Stations" link, and scroll down. Also has ads for the old KNUZ-TV 39.