WACH-TV is a Fox affiliate in Columbia, SC. Great call letters for a TV station.
The AM radio station in the small town near where I grew up was KDIO, so I thought it must have been something special: KDIO radio.
San Diego has KGB on the FM dial, a name which, as you might guess since it only has three letters, predates the Soviet intelligence agency of the same name. The San Diego Chicken started off as their mascot.
Some Montreal radio stations of my childhood - some are still around, but most are defunct.
CFCF: Canada’s First, Canada’s Finest. Its newsroom advertised itself as “Complete Factual Coverage First”. It was the first in Canada to have regular programming as early as 1919.
CJAD: named after Joseph Arthur Dupont - the station’s founder - in 1945.
CHLP: the LP stood for the newspaper - La Patrie - that owned the station.
CKGM: the station plugged itself as “Golden Modulation” (rather than “Amplitude” or Frequency").The GM also stood for “Greater Montreal”.
At first, I thought that might be more appropriate for a station in Athens, Georgia, but yeah, I get it now.
The KSTT Building is still called that, even though the station itself is long gone.
I have fond memories of both of those – CFCF more for their wonderful arrival as Montreal’s second English-language television station than for the radio station, but CJAD definitely for the radio, as it seems that’s what my parents always listened to.
CJAD is especially nostalgic thinking about listening to it in our summer cottage. As night grew deeper and the smell of pines and the sound of whip-poor-wills drifted in through the windows, CJAD would air a program called A Starlight Concert, which always began with an instrumental version of the beautiful O Cara Mio Babbino. Young little me understood that this meant that the day’s fun was over and it was just about bedtime.
In reply to the OP, when I was a kid , living in New Jersey, we got broadcast TV out of New York City (and Secaucus NJ, where independent Channet 9 WWOR came from). Under the right atmospheric conditions, though, we’d get channel 10 out of Philadelphia.
Regarding station names:
The MIT student radio station, back when I was a student, was WTBS, which stood for Tech Broadcasting Station. (They had originally used WMIT, of course, but found out that those c all letters were already in use in Asheville, NC.) Shortly after I left, Ted Turner’s station WTCG offered them $25,000 to apply for a change in call letters, and the MIT student station became WMBR (for “Walker Memorial Broadcasting Radio” – the Walker Memorial – the old Student Center and dining hall – is where it broadcasts out of.) And, of course, WTBS became Turner Broadcasting Station.
Boston’s WLVI isn’t the only station whose call sign is Roman numerals for it’s station number. WXXI in Rochester New York is Public Broadcasting channel 21. I know of at least one other case.
Wikipedia lists these:
Numbers: Numerous television stations have chosen call letters that reference their channel number, either spelled out or using Roman numerals: WDIV-TV (channel 4, Detroit, Michigan, WXII-TV (channel 12, Winston–Salem, North Carolina), KXII (also channel 12, Sherman, Texas), WIIC-TV (now WPXI) (channel 11, Pittsburgh), WPVI-TV (channel 6, Philadelphia), WIVB-TV (channel 4, Buffalo, New York), WTWO (channel 2, Terre Haute, Indiana), KIXE-TV (channel 9, Redding, California - And the last letter selected as it was part of the Educational network, now PBS).