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Re: [IRCA] Strong Chinese on 657 kHz
- Subject: Re: [IRCA] Strong Chinese on 657 kHz
- From: D1028Gary@xxxxxxx
- Date: Sat, 18 Sep 2010 15:11:22 EDT
Hi Bruce,
Thanks for your comments on the 657-China reception.
Actually, many of the high-band AM loggings that you report from Seattle
(with your K9AY antenna) never make it to audio here in Puyallup at my
location, and the same effect is noticed even with Guy Atkins' high-band AM
loggings only about 4 miles SE of here. On the other hand, I can occasionally
receive many low-band Asians that Guy has no trace of, even when we listen at
the same time, on the same frequency.
I think the reason for the disparity is related to the unusual 9' box
loop's reception pattern, in which the highest "Q" is obtained on the lowest
tuned frequencies. This creates a situation where the giant 9' loop is a real
overachiever from 531 kHz to about 891 kHz, about equivalent to other
high-gain antennas on the middle frequencies, and maybe less impressive on the
upper-band. One example was the reception of the 594-KBS1 station here
last December, which apparently Patrick (and the Grayland DXers) had never yet
come across.
73, Gary
In a message dated 9/18/2010 10:53:50 A.M. Pacific Daylight Time,
bportzer@xxxxxxxxxxx writes:
Gary
I played your file and then replayed my SDR file from the exact same
time. What a difference! Mine was nowhere near as clear as what you
recorded. I could tell someone one was talking on 657 in the 660
splatter, but it wasn't good enough to determine the gender of the
speaker or the language being spoken. Sometimes it's hard to believe
we're only 40 miles apart.
Bruce
On 9/18/2010 7:42 AM, D1028Gary@xxxxxxx wrote:
> Hello All,
>
> This morning during excellent TP-DXing conditions there was one of the
> more bizarre Asiatic fade-ins that was ever observed here, and I was
curious
> whether any of the other TP-DXers noticed it.
>
> Around 1333 UTC a weakened 657-Pyongyang BS Korean-speaking YL was alone
> on the frequency, when suddenly a Mandarin Chinese station appeared under
> Pyongyang and completely overcame the NK station within a minute,
leaving no
> trace of Pyongyang _http://www.mediafire.com/?i3yln7vt34sw6k3_
> (http://www.mediafire.com/?i3yln7vt34sw6k3) .
> The Chinese station was alone on the frequency at a strong level for 5
> minutes, with apparent news and Chinese pop music
> _http://www.mediafire.com/?176l0s1w9way10x_
(http://www.mediafire.com/?176l0s1w9way10x) . After
> dominating the frequency for about 5 minutes, the UnID Chinese station
finally
> faded back into the noise, allowing Pyongyang to weakly return to the
> frequency.
>
> Chinese has never been heard on 657 kHz here, so the station would be a
new
> TP if I can determine the identity. Any suggestions from the Grayland
> experts would be appreciated. In addition to this reception, 891 kHz
also had a
> strong UnID mystery here this morning, and several other frequencies
had
> very interesting TP signals. I hope you guys had as much fun as I did!
>
> 73, Gary DeBock (in Puyallup, WA)
> Modified C.Crane SWP Ultralight + 9' PVC Loop
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