Stanislav said:
-- When were translators first authorized as a service by the FCC, and what was (were) the first licensed translator(s) to go on the air?
According to this paper:
http://danielfaber.com/translators.pdf, the first translator went on the air in 1948. However, it wasn't licensed... and was shut down by the FCC.
The Commission finally began authorizing translators in 1956.
I doubt it's possible to know today which translator(s) were the first to go on the air. I think you can reasonably assume the first one *authorized* on each channel was the one with AA in the calls -- K70AA, K71AA, etc... I'll post a list below.
Don't underestimate the importance of early illegal translators. There were apparently *hundreds* in the rural West. And they were so popular that at least one Western state ordered its law enforcement people to not cooperate with the FCC in shutting them down.
-- Did translators from the start utilize the call letter format that became standard (W/K + two-digit channel # + 2 letters)?
Yes.
-- Was the term "translator" used from the beginning, and how/why/by whom was the term coined? (It always struck me as a little clunky, though I assume the intent was to convey the concept to the viewing public that the signal would be "translated" to a different channel.)
Not in the unlicensed days. The illegal units were generally called "boosters".
Today, a "booster" is a transmitter that relays the signals of a main transmitter
on the same channel as the main transmitter.
A "translator" is one that relays the signals on a
different channel from that used by the main transmitter.
It's not particularly clear to me whether the unlicensed "boosters" were boosters in the current meaning of the term.
The FCC did not initially authorize boosters in the current meaning.
- That could be because nobody (including the operators of the illegal stations) thought such a facility could be made to work.
- It could also be because the FCC had far too much experience with the illegal units malfunctioning, interfering with the station they were trying to relay - and/or other stations.
The first translators authorized on each channel, according to the 1958
Broadcasting Yearbook:
- Channel 70: Bishop, California // KNXT-2 (KCBS) Los Angeles
- Channel 71: Ellensburg, Washington // KIMA-29, Yakima
Channel 71: Newport, New Hampshire // WRLP-32 Greenfield, Mass. (primary no longer exists)
- Channel 72: Weed Heights, Nevada // KOLO-8 Reno
- Channel 73: Bishop, California // KRCA-4 (KNBC) Los Angeles
Channel 73: Palmerton, Pennsylvania // WBRE-28 Wilkes-Barre
- Channel 74: North Warren, Pennsylvania // WJAC-6 Johnstown
- Channel 75: Manson, Washington // KHQ-6 Spokane
- Channel 76: Prineville, Oregon // KLOR-12 (KPTV) Portland
- Channel 77: Bayfield, Colorado // KOAT-7 Albuquerque
- Channel 78: Orangeville, Utah // KTVT-4 (KTVX) Salt Lake City
- Channel 79: Blythe, California // KVAR-12 (KTAR) Phoenix
Channel 79: Claremont, New Hampshire // WRLP-32 (see ch. 71)
- Channel 80: Center, Colorado // KCSJ-5 (KOAA) Pueblo
- Channel 81: Benton, Washington // KHQ-6 Spokane
Channel 81: Lebanon, New Hampshire // WRLP-32 (see ch. 71)
- Channel 82: Kingman, Arizona // KOOL-10 (KSAZ) Phoenix
Channel 82: North Warren, Pennsylvania // WBEN-4 (WIVB) Buffalo, NY
- Channel 83: Redmond, Oregon // KLOR-12 (KPTV) Portland
There had presumably been a W70AA and K74AA at one time but they don't appear in the 1958 listing.
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Here's an interesting tidbit...
Note that all the translators above were above channel 69. For many years, translators were only allowed in the 70-83 band. Of course, in the 1970s that became the 800MHz cell-phone and two-way bands. No new translators were allowed above 69, and nearly all the existing ones migrated below 70. One on channel 70 in Kansas was reported by DXers as recently as the beginning of the 21st Century 11 years ago -- but we assumed when that station went defunct, there was nothing left above 69.
Turns out we were wrong.
See this entry in the KTTC-TV DTV Blog:
http://addins.kttc.com/blogs/dtv/?p=46
Posted on February 17, 2009, the day this Rochester, Minnesota station shut down its analog signal, it indicates their Blue Earth, Minnesota translator K70DR
was still operating on channel 70 in February 2009.
The translator holds a permit to convert to digital operation on channel 16. There is no license-to-cover yet, which means
it is possible K70DR is still operating on channel 70.