Re: [IRCA] TP DX in Seattle on October 7

[d1028gary@xxxxxxxxxxx]

Hi Guy, 
 
Well, the mystery noise on 648 and 747 has a greater "coverage area" than any of us ever imagined! Both frequencies are almost wiped out here 24/7, except when VOR and JOIB can really boom in to smash through the noise. I do know that the 648 and 747 mystery noise doesn't have enough range to make it to Rockwork or Cape Perpetua, though :-) 
 
Although I've never heard your 594 or 693 noise, IÂdo haveÂintermittent noise issues on 945 and 1044.ÂDuring this lackluster TP-DXing seasonÂthe mystery noiseÂdoesn't really help matters. 
 
73, Gary (in the Valley) 
 
ÂÂÂÂ 
----- Original Message -----

From: "Guy Atkins" <dx@xxxxxxxxxxxxx> 
To: "Mailing list for the International Radio Club of America" <irca@xxxxxxxxxxxxxxxx> 
Sent: Wednesday, October 8, 2014 10:46:36 AM 
Subject: Re: [IRCA] TP DX in Seattle on October 7 

Interesting! I've been hearing buzzing on the same TPs as Gary and Bruce, 
in addition to 594 and 693 which have had the strongest accompanying buzz 
QRM. I thought it was just some local (neighborhood) interference. 

I can knock down almost all of the buzz using the noise blanker in SDR 
programs, but the exact setting is very touchy. Even a bit too blanking 
action much causes severe audio distortion. When it works correctly the 
noise is completely removed; you have to readjust for different frequencies 
as you tune around, though. 

73, 
Guy Atkins 
Puyallup, WA 



> ---------- Forwarded message ---------- 
> From: d1028gary@xxxxxxx 
> To: irca@xxxxxxxxxxxxxxxx 
> Cc: 
> Date: Wed, 8 Oct 2014 00:16:51 -0400 
> Subject: Re: [IRCA] TP DX in Seattle on October 7 
> 
> 
> Hi Bruce, 
> 
> Thanks for your daily TP-DXing reports, which always provide an 
> interesting comparison.. 
> 
> <<< Â JOIB-747 has been received with a reasonably 
> good carrier but with the audio buried in a loud buzz that only affects 
> a narrow part of the band near 750. Â >>> 
> 
> Actually, even here in Puyallup, that same loud buzz has been burying 
> 747-JOIB's signal on most mornings. As you said, the buzz is only 
> noticeable around 750 kHz, but it is pretty obnoxious. Since you also have 
> noticed it, it must be an issue throughout the entire Puget Sound area. 
> 
> Occasionally 747-JOIB's signal is strong enough here to get through the 
> buzz, like it was this morning around 1323. Otherwise the buzz rules the 
> 747 frequency here (along with a similar buzz covering up 648 here, unless 
> VOR's signal is unusually strong). 
> 
> 73, Gary 
> 
> 747-JOIB this morning (at 1323) through the buzz and Portland splatter 
> http://www.mediafire.com/view/2b4825oon42damq/747-JOIB-1323z100714PL380.MP3 
> 
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