Re: [IRCA] Spain on 855 and KOA IBOC off again

[Patrick Griffith <antennawizard@xxxxxxxxxxx>]

KOA may be having problems at the transmitter. A couple weekends ago I noticed that the flasher for the beacons had failed. With the top of the tower in thick clouds the beacons were flashing very erratically and sometimes would stay off for several minutes. I believe that most beacon flashers are designed to fail in the on position but that did not happen. The problem was quickly corrected at the beginning of the week so they must have known about it. I wonder if they took a lightning strike?

 

By the way several of the air traffic controllers at nearby Centennial airport use the KOA tower as a landmark for incoming flights from the southeast. I frequently hear them say "report at the KOA tower".

 

KOA does not have an auxilliary tower. But it does appear that they have some kind of setup to allow them to manually switch the tower to what I presume is an auxilliary transmitter building. I have observed a sort of slant wire feed system with a wire attached to the tower just above the first set of guy wire attachments. This wire runs over to a tall electrical pole next to a seperate building next to the main transmitter building. The down feed of that wire appears to be equipped with an electric power line type of fuse that is in the open position to interrupt the feed from entering the building. It appears that they can close this fuse to complete the circuit from the antenna into this building. Very interesting! There is a new mall with a Sports Authority store right next to the transmitter site. Parking in back by the loading dock places you just about 300 feet from the north side of the tower.

 

Pat Griffith

 
> From: chris@xxxxxxxxxxxxxxx
> To: irca@xxxxxxxxxxxxxxxx
> Date: Mon, 21 Dec 2009 13:47:19 -0700
> Subject: Re: [IRCA] Spain on 855 and KOA IBOC off again
> 
> KOA's IBOC has been on and off over the past 3 weeks. Right now it's back
> on. Local 950-KRWZ IBOC has been off now for a week.
> 
> 73,
> 
> Chris Knight
> Fort Lupton, CO
> 
> -----Original Message-----
> From: irca-bounces@xxxxxxxxxxxxxxxx [mailto:irca-bounces@xxxxxxxxxxxxxxxx]
> On Behalf Of George Sherman
> Sent: Monday, December 21, 2009 1:31 PM
> To: Mailing list for the International Radio Club of America
> Subject: Re: [IRCA] Spain on 855 and KOA IBOC off again
> 
> I wonder how long KOA has had the IBOC off & if anyone knows if it's coming
> back? I was told by 1 DXer it's been off a couple weeks? I just noticed it
> about 3 nights ago, there was no IBOC hiss on France-864. 73, George S., MN
> 
> --- On Sun, 12/20/09, Chris Knight <chris@xxxxxxxxxxxxxxx> wrote:
> 
> 
> From: Chris Knight <chris@xxxxxxxxxxxxxxx>
> Subject: [IRCA] Spain on 855 and KOA IBOC off again
> To: "Mailing list for the International Radio Club of America"
> <irca@xxxxxxxxxxxxxxxx>
> Date: Sunday, December 20, 2009, 11:52 PM
> 
> 
> Spain on 855 kHz is in with talk program (man talking in Spanish at the
> moment). Thanks to local 850-KOA for having their IBOC turned off!
> 
> 
> 
> 73,
> 
> 
> 
> Chris Knight
> 
> Fort Lupton, CO
> 
> Tecsun PL-380
> 
> Portable Conti Loop antenna facing NNE. 
> 
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