August 1, 2018 at 12:35 am #38739
…because I was under the impression that they had to move to 102.5 to prevent interference to KYTE.August 1, 2018 at 2:41 pm #38747Andy BrownParticipant
Moving one to three channels up or down (or up or down 10.6 or 10.8 MHz) is a minor amendment and is always available to a licensee in the FM services. All that is required is a channel study showing all distances/contours are respected.August 1, 2018 at 10:40 pm #38753KXRU-EDParticipant
KYTE moved back to the coast. Its an interference free channel again.August 2, 2018 at 1:01 am #38755
No, KYTE has an STA to operate from its former licensed site, which is currently valid until December 1st and will probably go through a series of renewals until they can figure out a way to reactivate their newly licensed site in the Coast Range. Presumably, there’s a limit to that but at this point, their licensed site is still in the Coast Range. Since their COL is now Independence instead of Newport and they can’t reach the former from the old site, they would probably have to jump through some hoops to return to it permanently and remain unscathed!August 3, 2018 at 11:51 pm #38775
I noticed the CP for KXXP at 104.5 on radiolocator.
From down here in Eugene I don’t know what’s going on at 104.5 right now, but I would assume KXXP and the Portland translator can’t both be there at once, so I’m wondering what the plan is? Also, is the KXXP tower site the same one the old KCIV used?August 4, 2018 at 12:05 am #38776
It looks like KXXP’s 60dbu contour will cover about half of Gresham. If that’s the case, the translator will be interfered with but not within its 60dbu contour. Since it’s unlikely that they can move, they’ll probably just accept a smaller coverage area.August 4, 2018 at 11:39 am #38779BroadwayParticipant
>>probably just accept a smaller coverage
There’s gonna be a little RF chaos in east Portland on 104.5 FM if the translator stays on…it’s a boom’n little translator.August 4, 2018 at 1:30 pm #38786
I had just eyeballed it before but after careful scrutiny, I see no way that Way FM can remain on that frequency. KXXP is going to be all over them! 104.7 looks like their best shot but they’re not going to like it!August 4, 2018 at 1:48 pm #38788jr_techParticipant
IIRC, KDUK/KDUX? listeners chased them off of 104.7 before.August 4, 2018 at 2:19 pm #38789Andy BrownParticipant
CP antenna is up way high (1500+m AMSL) and the terrain between xmtr site and Gresham remains elevated most of the way. Unlikely there would be much usable signal in Gresham unless you are using a kite for a receiving antenna. I think all of your concerns are bloated. A terrain profile reveals (use a ruler across the peaks) the new signal’s lowest direct wave gets to Gresham at about 250 meters above the ground. (Click on map for full size image)
By the time the signal actually gets down to the ground, it will be outside its 60 dBu. There may be some areas closer to the translator that sustain some reception issues, but the closer you get to the Willamette the lower the elevation becomes providing further separation. It’s not going to get the kind of rim shot valley penetration the west slope Hood signals do. Eventually the translator’s ss will be strong enough to win the contest in the receiver. Yes, there will be some areas where reception of the translator will be compromised, but as a secondary service, you have to accept it or move.
Besides, there aren’t any usable channels to move to.
Sorry for the extraneous contours showing on the map. I forgot to turn them off. No relevance to this discussion.August 5, 2018 at 1:21 am #38797
Wouldn’t just interfering with KXXP’s “theoretical” 60dbu contour be enough for the FCC to force the secondary service to move or go off the air?August 5, 2018 at 2:25 pm #38799
Did KCIV broadcast from the KXXP site?I know their tower was on the Washington side.August 6, 2018 at 12:45 am #38801
…not so much. KCIV/KMCQ overlooked The Dalles from the Washington side. KXXP is in Oregon, on Mt. Defiance, in the Cascade Range, roughly halfway between Cascade Locks and Hood River.August 6, 2018 at 1:48 am #38803
One of my old FM Atlases, I think 1981, listed KTIL-FM at 104.1 with 100kw, at 2000 feet above average surrounding. It would have been pretty interesting if that had actually come about.August 6, 2018 at 10:23 am #38807
I thought so too. It looked like it would have covered the west side pretty well.
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