[Lowfer] VLF spectrum

[Michael Sapp]

Garry:  Interesting observation as 18.3kHz is robust here as well but I have 
never copied the 19.8 Australia station. I do occassionally copy the 19.6 
kHz station when the local 19~20kHz wall warts are not doing their choir 
practice.... No copy on the 26kHz 4X4 here in EN90xn...

       Slowly making progress on new transformers for the LF EWE antenna. A 
new binocular core 75 to 50 ohm isolation xfmr made from (8) FT50-75 cores 
(16T/13T)  is showing just over .1 dB insertion loss at 8820Hz (after 
deducting cable loss)  which is for in-shack CM isolation .. .14 dB at 137 
and 185 and .18 dB insertion loss at 475 kHz rising to .23 dB at 2.0MHz. 
Sun/Mon I may have a set of appropriate 10:1 antenna transformers ready to 
be usable at 8820Hz and 17.2kHz...

https://www.dropbox.com/s/vw6u7a736wg3fwy/IMG_4153.JPG?dl=0

   73, Mike wa3tts


----- Original Message ----- 
From: "Garry" <k3siw at sbcglobal.net>
To: "lowfer list" <lowfer at mailman.qth.net>
Sent: Saturday, December 20, 2014 11:57 PM
Subject: Re: [Lowfer] VLF spectrum


> Jay, nice to see testing on 25.2 kHz by NML4. Haven't noticed that source 
> for months. Also, interesting to see how different some signal strengths 
> are between us. You were seeing HWU on 18.3 kHz very strong while I got 
> just a weak trace. But NWC, 19.8 kHz in Australia was strong here but weak 
> at your QTH.
> -- 
> Garry, K3SIW, EN52ta, Elgin, IL
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