[Lowfer] WM & SIW early this morning

[N8OOU]

Mike & All;

Your captures from late last night, and this morning show a stronger 
than normal Wm. I would assume that's due to Cold and Snow cover. My low 
here last night was -8.

I noticed unusual behavior on the beacon last night, which has continued 
this morning.  The P.A. current from the exciter is randomly varying 
upwards.

I have a short video clip here:
https://www.dropbox.com/s/istx11d7z20wjdk/DSCF0062.AVI?dl=0

That meter indicates the P.A. power flexing between 1W and 1.15W. Winds 
were calm, nothing was moving at the antenna. I didn't notice any lights 
flickering like we were having a brownout. A check of the DC supply 
right now shows a steady 24v to the exciter.

Up to now the P.A. current would run steady with maybe a small daily 
variance.   Weird...   Maybe some component is about to fail???


73   de   N8OOU - Mike Meek

On 02/19/2015 09:32 AM, Michael Sapp wrote:
> Garry, Mike & All:  Also seeing only WM and SJ this morning in the 185.3
> window.  WM peaked up from about 0830 to 0930, then faded and came back
> around 1030utc.
>
> WM faded again around sunrise and has been above the noise since then.
>
> https://www.dropbox.com/s/1q07t07ppa30zul/capt00070.jpg?dl=0
>
> https://www.dropbox.com/s/v0wdk85t8g6zvze/capt00071.jpg?dl=0
>
> https://www.dropbox.com/s/73s68gmps3bo7v5/capt00072.jpg?dl=0
>
> https://www.dropbox.com/s/hehymawpcq0pd73/capt00073.jpg?dl=0
>
>
> On 630m only a single VE7BDQ capture of -27 at 0720, but 50 some WH2XND
> captures ranging from -8 at 0452 to -28 at 1206 with the 16 bit internal
>
> soundcard in my old Vista era Acer netbook. (The 24 bit external Xonar
> sound card and new Acer would have dug a few dB deeper into the noise)....
>
> I switched to my 300kHz LPF and single rx IF feed at 1446 UTC.  At the
> time of the switchover the WM signal went from -78 to -75 but I'm
> uncertain how much
>
> of that was due to the equipment change or propagation.  Next capture
> frame may tell if the background gets noticeably darker.  Seems like the
> 300kHz filter has less
>
> effect on background noise with the NW pointed EWE, even though 570 kHz
> in Youngstown OH is close to the top of the S-meter scale in that
> direction (many other AM stations weaker
>
> levels tho, especially the 50KW 4mi away)....also less nearby commercial
> & industrial activity to the NW direction here.....
>
> 73 Mike wa3tts
>
> ----- Original Message ----- From: "Garry" <k3siw at sbcglobal.net>
> To: "lowfer list" <lowfer at mailman.qth.net>
> Sent: Thursday, February 19, 2015 8:16 AM
> Subject: Re: [Lowfer] WM & SIW early this morning
>
>
>> Mike,
>>
>> Thanks for the captures. See SIW is still hanging in there on 185.185
>> kHz this morning, despite the -10F temperature. Haven't seen MP for
>> awhile so perhaps the weather has it down at the moment. WM is coming
>> in well now that daylight has returned. It did fine overnight too but
>> only company seen here at the lowfer watering hole was SJ.
>>
>> Didn't notice any sunrise advantage here - the 3 US west coast Navtex
>> stations on 518 kHz decoded, but that's normal. Nothing noted from
>> Greenland. NDBs indicated good propagation to the south (GPI on 309
>> kHz was in all night and Panama "901" decoded on 302 kHz DGPS), but
>> nothing was detected was the Chile Navtex stations. VLF had a nice
>> array of signals in the evening but 77.5 and 162 kHz clock signals
>> were weak.
>>
>> --
>> Garry, K3SIW, EN52ta, Elgin, IL
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