Re: [IRCA] [NRC-AM] KRPI-1550 Daytime Pattern

[Stephen Airy <pianoplayer88key@xxxxxxxxx>]

So what would be my best chance of logging them in south El Cajon (east of San Diego), CA?  Looking at their pattern data and plot (as well including the field strength values specified in the detailed results) and calculating from that info, their ERP toward me on their day pattern appears to be about 375 watts, and on their night pattern looks like about 1.6 kW.  (I'm in a deep null in their day pattern, and a not-quite-as-deep null in their night pattern.)  To compound matters, I have a local 1 kW ND co-channel, XEBG, about 17.5 miles from me that's only about 30° different from the opposite (180°) bearing, and all my antennas have a figure 8 pickup pattern.  It *IS* possible to get a deep null on a local station, but I have to position the radio *JUST* right ( http://www.youtube.com/watch?v=f7fU5hIIuOY ) to do so (which eliminates my ability to simultaneously specifically peak a desired station unless it just happens to be on the right bearing).


Any chance they could run part of the test non-directional so I (as well as others in California) would have a chance at logging them?  (I often hear 50kW ND KUAZ Tuscon on the channel when they're on around sunrise/sunset.)






________________________________
 From: Bruce Portzer <bportzer@xxxxxxxxxxx>
To: Mailing list for the International Radio Club of America <irca@xxxxxxxxxxxxxxxx> 
Sent: Friday, January 27, 2012 12:41 PM
Subject: Re: [IRCA] [NRC-AM] KRPI-1550 Daytime Pattern
 


KRPI's actual daytime antenna pattern can be viewed on the FCC website http://transition.fcc.gov/ftp/Bureaus/MB/Databases/AM_DA_patterns/127961-23102.pdf   One of the two main lobes is at 90 degrees, so it should get out well to the east.  



The local geo graphy skews the groundwave quite a bit, what with saltwater to the west and the C ascade mountains to the east, which explains the coverage shown on R adio L ocator.  



Bruce 
   

----- Original Message -----


From: "David Yocis" <davidyocis@xxxxxxxxxxx> 
To: "NRC" <am@xxxxxxxxxxx>, irca@xxxxxxxxxxxxxxxx, amdx@xxxxxxxxxxxxxxxx 
Sent: Friday, January 27, 2012 11:48:36 AM 
Subject: Re: [IRCA] [NRC-AM] KRPI-1550 Daytime Pattern 


Neil Kazaross has reported hearing KRPI in Chicagoland at sunset on several occasions, so the day pattern does send some power eastward.   
David Yocis To: irca@xxxxxxxxxxxxxxxx; amdx@xxxxxxxxxxxxxxxx 
From: midcapemarc@xxxxxxx 
Date: Fri, 27 Jan 2012 13:54:23 -0500 
CC: am@xxxxxxxxxxx 
Subject: [NRC-AM] KRPI-1550 Daytime Pattern 


Well, upon further review, I can see that their daytime pattern does have a pretty good lobe to the East. 


  


http://www.radio-locator.com/cgi-bin/pat?call=KRPI&service=AM&status=L&hours=D 








Marc DeLorenzo 

South Dennis, Cape Cod, Massachusetts 


http://www.wtfda.info/showthread.php?t=228 


  


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