w9wi said:
The rules were at one time a lot tighter - I still remember a time when WOAI was the ONLY station allowed to operate on 1200 at night, and it's my understanding that in earlier years many other channels were literally clear - with only ONE station operating at night.
As I remember, there were others like that as well, even in my lifetime.
BOLD I believe were truly clear channels, without even any daytimers or anything else, other than the big 1-A station. There are some major surprises near the bottom of the list.
640--nothing in the US allowed to operate at night, later than Los Angeles sunset. I remember that Akron, Ames, and Norman OK ALL had
"Specified Hours" licenses (or was one of them daytime only?). Akron would sign off at KFI's sunset, I forget about the others.
Generally, CMQ La Habana (site nee' Santa Clara) owned the frequency nights in Michigan. By the way, how did WNAD Norman
manage to change to WWLS, another "W" call in *Oklahoma*, in the 70s?
650--In the continental US, there were only WSM, and 250-watt-daytimer KIKK (nee' KRCT) in Texas.
660--In the continental US, bgesides WNBC/WRCA/WEAF (depends on when), there were three daytimers east of the Rockies, and
nothing at all in the West. Oops...don't forget Fairbanks...
670--I think that WMAQ (now WSCR) was alone, until KBOI moved there in the late 60s.
700--Definitely had only WLW, though Anchorage eventually moved to 700 around 1970 or so.
720--WGN (and, later, Hawaii and Alaska) were alone. Perhaps Las Vegas came on before one or both of those "late states,"
because KDWN came along quite early in the scheme of clear-channel breakdowns.
760--I remember only WCPS Tarboro NC competing with WJR's continental U.S. signal in the 60s. Of course Honolulu was there as well.
820--I don't remember anything besides the WBAP/WFAA share-time arrangement (later becoming all WBAP). I don't think 820
was "duplicated" until the 70s (Burien WA may have been first?). Despite the fact that *TWO* stations in a fairly major metro
were using the frequency in the early 60s, it went vacant EVERY night, leaving only an exotic inland Colombian (HJED Cali).
770--I'm pretty sure I remember there being nothing besides KOB (fulltime duplicated-clear "oldie") and WEW-MO daytimer, against WABC.
780--Before Reno moved here in the 60s, it was ONLY WBBM, and four daytimers (NE, OK...and *TWO* in NC).
830--Besides KIKI in Hawaii (which was a mere 250 watts in the early Sixties), and a daytimer in Kennett MO, it was all WCCO.
840--Except for a couple of oddball eastern daytimers (PA and CT), wHAS had it all to themselves.
870--There was Honolulu, and daytimers in CA and MI, and a Limited/Specified Hours in Ithaca NY. WWL was the sole nighttime in the 48.
880--before KRVN moved here (were they, or Guymon 1210, or Reno 780, the first clear-channel breakdown in the "Baby Boomer era"?),
WCBS had to compete only with daytimers in OH and NC. There's that pesky NC again, that state had a knack of getting stations
onto "odd" frequencies in the early days.
890--Before KDXU moved off'a 1450, it was just WLS, and a daytimer in...uh, WHAT state was that again? Okay, look at 880...
1020--Probably the strangest of all the clears, as I remember it. Roswell wasn't there yet in the early and mid-60s. Los Angeles had the
bizarre situation of going off at their sunset, but being allowed to sign on 9PM SUNDAY NIGHTS to stay on only until KDKA signed
back on from their weekly silent period. Making it stranger, there were two daytimers in Illinois(!)...and nothing in NC.
1030--It used to be only WBZ, and Corpus Christi as a daytimer. Casper WY moved there as one of the early clear duplications.
1040--WHO used to compete only with a 1000-watt daytimer in Dallas, and there was a Hawaiian there.
1060--There was some stuff here in the early 60s, but I think KPAY Chico was the only fulltimer to compete with Philadelphia.
1090--I think that Baltimore and Little Rock, along with Seattle, used to be the only continental U.S. stations. However, Canada and
Mexico border stations got into the mix as well.
1100--As I remember, the only fulltimers were KFAX (which puts "nothing" east, but blasts the entire West Coast from Cabo San Lucas to
Anchorage), and of course Cleveland. Three daytimers in the Eastern Time zone as well (NY, PA, GA) at the time.
1120--Until Eugene OR moved there, I don't think KMOX competed with anybody. When did Limon CO come on - the 70s?
1160--KSL didn't really compete with anybody, other than quasi-daytimer WJJD. Same type of arrangement as used for KFI on 640.
1180--I remember in the 60s, before Kalispell moved, it was ONLY daytimer Jacksonville IL competing with WHAM.
1200--"Move along, guys, nothing more to see say here."
1210--Before Guymon moved here (early), the early 60s had only Honolulu, and daytimers in OH, NC (imagine that) and IL, to compete with.
1520--Outside of some West Coast stuff, I'm pretty sure I remember ONLY KOMA and WKBW being here in 1960-61. (Ypsilanti MI which is
now on 990, and Bryan OH, came on in 1962.) Were the Californians, or Oregon, on in 1960?
1530--In the early sixties, it was ONLY Cincinnati, Harlingen (then a VERY small town!!!) and Sacramento, and no daytimers at all.
1540--In the earliest 60s, I think that ONLY Los Angeles, Fort Worth (50-KW daytimer), Waterloo, Albany, and 250--watt Galveston were
on here.
1550--It seems like the White's Radio Log in 1960 didn't list much more than Shreveport, St. Joseph MO, maybe one of the Indianas, and
Bennettsville? Of course CBE Windsor was there. I think I remember a huge flurry of new stations in the 1962-3 era though.
Corrections are welcomed of course! But it was fun reflecting on the dial as I remember it. It's amazing to consider how "under-used" some of these frequencies were, even as late as 1961. A sampling of FM, below, is even more amazing:
89.1, 89.9 - I think that, in 1965, there was **NOTHING** on these frequencies.
89.5 - I remember KMFA Austin, in the mid-60s, being the only thing on the frequency within range of Michigan. I'm not even sure if KPBS
San Diego was even on (or perhaps already on, but not on 89.5) at that time?
99.7 - Even in the mid 70s, there were no more than 10 or so stations operating here. In fact, even as recently as 10 or 12 years ago,
this frequency was a DX'ers paradise in the Northeastern USA, there being NOTHING northeast of Pittsburgh, Kannapolis NC and
Norfolk VA. (I think overall, 100.5 and 105.3 had a bit fewer nationwide than 99.7)
100.5 - I remember there being only several stations here, too. Maybe six stations in the late 60s.
100.9 - In the mid 60s, this frequency was not used in the United States AT ALL (unless it had translators). CHEC Lethbridge used to
be the only thing listed in White's Radio Log.
105.3 - Another frequency that had only a few stations on it for the longest time.
106.7 - This position was rather under-utilized as well. Des Plaines (Chicago) was a Johnny-Come-Lately coming on in the early 80s or
late 70s. From here in western Illinois, even in the early 90s, there was usually NOTHING on the frequency besides 200-mile-distant
Des Plaines. When a 3000-watter in Cave City KY, 350 miles from here, came on in the early 90s, they were easy and common here
because nothing else got in the way. There were many stations using 106.7 at 500 miles away and farther, though, and I racked
up about 14,000 "tropo miles" on 106.7 before IL, IN, IA, WI stations started coming on rather late in the scheme of things.
TV: Even as recently as 1990, ANY signal on Channel 58 was *VERY* serious DX from Macomb IL. No full-service station closer
than New Jersey existed, nor were there any translators closer than Georgetown, Ohio (400 miles). Talk about under-utilized!