Guys, I gotta ask, what does this have to do with time keeping? Am I missing something?
-Bob On Fri, May 20, 2011 at 9:59 PM, <w...@aol.com> wrote: > So here are some URL's to explain the pattern for KNTH... > > If you will note, there are two Texas stations that KNTH is protecting, > since they are SENIOR on the frequency... Also, WAPI in Birmingham > 50KW daytime non-directional is being protected in the ENE null. > We could go on and on!! The first stations that must be protected > are those ND (non-directionals) that are within several hundred miles > of the Houston transmitter site. Also any directionals (DA) that do > not have nulls towards Houston must be protected. > > Oh, 1060 and 1080 also have to be protected to a lesser extent!! ;-) > > _http://www.amlogbook.com/freq/freq.htm#1070_ > (http://www.amlogbook.com/freq/freq.htm#1070) > > Here is the page to look at the day and night patterns of KNTH... Note > that the patterns are essentially the same: > > _http://www.radio-locator.com/cgi-bin/finder?call=knth&sr=Y&s=C&x=16&y=6_ > (http://www.radio-locator.com/cgi-bin/finder?call=knth&sr=Y&s=C&x=16&y=6) > > and the stations being protected... KOPY WSW of the KNTH transmitter site > > _http://www.radio-locator.com/info/KOPY-AM_ > (http://www.radio-locator.com/info/KOPY-AM) > > Note that KOPY DOES NOT have a NULL towards KNTH either day or night... > > and note that non-directional KWEL is in the null off the back of the KNTH > array. > > Bottom line here... someone wanted an AM station in Houston... After > a lot of midnight oil, and a lot of station day and night pattern > searches, > it was calculated that a pattern could be created for 1070 in Houston > using 9 or 11 towers!! > > AM antenna array black magic at work!! > > Oh... the AM rig is most likely GPS locked!! ;-) > > > 73, Don, W4WJ > > > > > In a message dated 5/20/2011 6:47:39 P.M. Central Daylight Time, > lo...@pari.edu writes: > > > On May 20, 2011, at 7:42 PM, Jim Lux wrote: > > > > 1070 kHz is also KNX, a 50kW clear channel station in Los Angeles. > > That might be why the pattern's so small in any direction but > > southeast at night. > > > > So what is generally south east from Houston. Galveston, I know, > > but that's not very far away. Are they trying to broadcast to Cuba > > as well? Or the Yucatan peninsula or oil rig and boat crews out in > > the gulf? > > > > Nah; KNTH is north-north-west of the population center, and thus > 'throws' its pattern toward the population center. FCC rules require > a certain field strength for the station's 'city of license' and to do > that the pattern is pointed towards the population center. I remember > hearing some SBE (Society of Broadcast Engineers) friends talking > about this 'crazy 11 tower array in Texas' years ago; nice to actually > see it from the air.... :-) > > > > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.