Re: [IRCA] Puyallup, WA TP's for 12-4... 1503 kHz Follies

[D1028Gary@xxxxxxx]

Hi Nick,
 
Thanks for your comments about the bizarre 1503 kHz reception of JOUK (and  
an UnID co-channel TP) around 1514 UTC this morning. It was certainly a  
surprise, being very much out of character with the rest of the mediocre TP  
propagation.
 
As you described very well, I have also noticed the "coattail  effect" 
where weaker co-channel TP's will often be heard along with the  dominant 
station during sudden, strange propagation boosts. This  happened quite a bit in 
November on 594 kHz here, with either the UnID  Chinese or the KBS1 Korean 
fading in together with NHK1 JOAK, even when the  rest of the band was 
relatively dead. It seems like the selective propagation  boost is for one 
frequency only (like this morning's weird 1503 kHz boost),  leaving the rest of the 
band unimproved. During the sudden 1503 kHz boost  there was only a weak 
carrier on 1494 (nowhere near audio).
 
Although my TP-DXing experience certainly isn't much compared to yours  (or 
that of other noted DXers), I have involuntarily become quite familiar with 
 the NHK1 "interval music," primarily because of the time spent on 594 kHz  
chasing the KBS1 Korean (and the UnID Chinese) recently. It seems this 
"interval  music" is played not only before the top of the hour, but in between 
individual  programs, such as it was in this morning's 1515 UTC recording of 
1503-JOUK. The  NHK1 "interval music" also was inadvertently recorded in 
many recent 594  kHz MP3's of the Chinese and Korean stations mixing with JOAK 
here, such as  midway into this short recording of the UnID Chinese mixing 
with JOAK on  November 27th:
 
_http://www.mediafire.com/?dxhguvjwyjy_ 
(http://www.mediafire.com/?dxhguvjwyjy) 
 
Last month this 594 kHz NHK1 "interval music" was somewhat irritating  
because it covered up the DX I was chasing, but this morning it provided a "de  
facto" identification of 1503-JOUK, since 594-JOAK was down in the noise at 
the  time :-)
 
73, Gary                
 
 
 
 
In a message dated 12/4/2009 11:42:37 A.M. Pacific Standard Time,  
nhp@xxxxxxxx writes:

At 17:48  12/4/2009, you wrote:
> Ready to write 
>off  the band, I  gave one final check on the high band TP's, not 
expecting 
>to  find  even a strong carrier.
> 
>The first frequency to check  was 1503 kHz, and much to my surprise, JOUK 
in 
> northern Japan had  decent audio-- the only decent TP audio on the entire 
 
>band at  that time (1514 UTC). This was a station that had never been 
heard  
>here  at much above the noise level, and now it was fairly strong  with 
the 
>distinctive  NHK1 interval music: 


I noticed  the upper band lift as well, Gary, but never got any real audio 
on 1503,  though it sounds as if it only happened for a short period.  
Intriguing  about hearing something else there also.  I think AM DX reception can 
 offer the reverse of FM "capture effect" where the strongest station grabs 
the  channel.   In the AM case, having a stronger station on channel can  
seem to allow weaker stations to ride along on the coattails of the stronger  
carrier of the dominant, sort of an "enhanced carrier" effect.

What do  you know about the NHK1 "interval music"?   They use this  
distinctive tune at a number of different times, and I've ID'd a couple of  weak 
NHK1 stations by hearing that tune.   Is it a break between  regular programs, 
and does anyone know where it originates, or did NHK create  it?   (you can 
tell that DX is in the dumps when one starts  wondering about such 
things...)   In a similar vein, does anyone  know the origin of the NHK2 s/off music 
box?

best  wishes,

Nick


>  

*****************************
Nick Hall-Patch
Victoria,  BC
Canada 

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