knowbetter said:
I don't exactly know the rule,if there is one, but if you voluntarly sign off an AM station somewhere, you have that option to re-establish that station somewhere else, in a different town with a new frequency. Somehow, this concession allowed getting rid of a frequency to allow other to upgrade (or yourself for that matter), then using the credit to establish a station somewhere else...
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2nd question, Once o frequency is silent, it's removed, and not allowed to return in that location... I don't think it could be directly replaced even in the first situation, but the space/contour that is available would be taken in consideration and used for new stations, in the first paragraph.
I'm not aware of any rule like that.
What I understand to be going on... are "major changes" to the station's license.
If KELE-1360 loses the lease on the land under the tower, it can of course file to move a half-mile down the road and maybe increase power to 2kw if they wish. As long as no interference results, it's routinely granted as a "minor change".
If they were to decide their coverage would improve by changing frequency to 1180, they could file to do that. It now becomes a "major change" (they have to compete with any other station that wants to move to 1180, or any existing station on 1180 that may wish to increase power) but if they win the resulting auction - or no other station files a mutually-exclusive application - then again the frequency change is routinely granted.
There is no limit, however, to how far down the road the station may move. 1/2 mile, 650 miles, it doesn't matter. As long as no interference would be caused at the new site/frequency, no problem. (there is some threshold distance at which it becomes a major change, even if the frequency doesn't change. I want to say it becomes a major change if the station will no longer provide a "city-grade" signal to the original city. But could easily be wrong about that.)
Since auctions are involved, the FCC only accepts major change applications in "filing windows". These windows aren't open very often. There was one what, 18 months ago?, and they're now sorting out all the resulting applications. If you look at my blog (
http://americanbandscan.blogspot.com) you'll see a pile of these - mostly grants (and denials) of completely new stations but also quite a few major changes.
Just last week, a station was granted a move from southeast Oklahoma to a Tulsa suburb in the northeast part of the state; with it they move from 1110 to 1120. But this kind of thing is hardly new: at one time, KYW Philadelphia was in Chicago.
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I don't know of any requirement that the old frequency be permanently removed. However, any new station thus created must meet current interference protection rules - it's no longer "grandfathered" into any looser past rules. The FCC no longer grants new Class D stations, so if the old station only operated during the day it may be impossible to get enough night power to get Class B status. Without that status, a new station cannot be granted.