[Lowfer] Jan 26, 27 Lowfers

[Michael Sapp]

Mark:  EAR is usually a bit stronger, should be 20dB out of the noise in 
winter conditions, but late in the afternoon the skywave transition fading 
starts to occur and can lower the received signal on EAR by several 
dB---which is what the current EAR capture shows.  However, MLS is only 
80~90 miles distant vs EAR at about 200 miles or more. MLS can be audible in 
the winter but not so much in the spring or fall when the background noise 
is higher.  Also at times it seems EAR is a few dB stronger on my NE EWE vs 
the NW EWE antenna in daylight. But at other times I have observed EAR to be 
strongest on the NW antenna in daylight.  Could be local background noise 
variations, sky absorption variations,  or other unknown factors, possibly 
even resistance changes in the antennas or ground resistance variations. I 
did add a perimeter ground wire around the four EWE ground rods and that did 
seem to help equalize the ground resistance somewhat.

 I have DC returns on the EWEs so I can apply 50~100 ma of sealing currents 
to reduce oxidation resistance in the F connectors, and I try to clean all 
the copper to stainless wire connector points in the system 3 or 4 times a 
year.  Usually I can tell when the antennas need maintenance as the 
background AM BC intermod levels increase slightly on a few mix-down 
frequencies of the local 50KW emitters...when all the antenna hardware is 
cleaned and oiled, the background AM BC intermod levels are almost 
non-existent (with low pass filter in line of course)....

73, Mike tts


----- Original Message ----- 
From: "lmlangenfeld" <lmlangenfeld at tds.net>
To: "Discussion of the Lowfer (US, European, & UK) and MedFer bands" 
<lowfer at mailman.qth.net>
Sent: Friday, January 27, 2017 1:41 PM
Subject: Re: [Lowfer] Jan 26, 27 Lowfers


> The last couple of times I've looked for midday signals (including today), 
> I've seen MLS but little or nothing of EAR. This is odd because when I see 
> one, I almost always see the other. Moreover, EAR usually seems to 
> modestly outperform MLS here. (SIW, of course, is always solid copy at 
> this QTH.)
> The vagaries of daytime LF propagation, I guess.
> Mark --WA9ETW/WI2XHJ --EN52fs
>
>
> Sent from my U.S. Cellular® Smartphone
> -------- Original message --------From: John Bruce McCreath 
> <weazle at hurontel.on.ca> Date: 1/27/17  10:26 AM  (GMT-06:00) To: 
> "Discussion of the Lowfer (US, European, & UK) and MedFer bands" 
> <lowfer at mailman.qth.net> Subject: Re: [Lowfer] Jan 26, 27 Lowfers
> Thanks for the report and screenshot of your EAR reception, Mike. It 
> certainly was solid right to the end.
>
> 73, J.B., VE3EAR
>
> LowFER Beacon "EAR"
> 188.830 kHz. QRSS30
> EN93dr
>
>
>
>
>
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