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The original message has been attached to this so you can view it or label similar future email. If you have any questions, see @@CONTACT_ADDRESS@@ for details. Content preview: Hi Jim, thanks for your comments! >> higher elevation angles ...  could emphasize the process Yes I think that is the case. We can try to verify the hypothesis on receive: Go to the DL0AO grabber https://vlf.u01.de/ and scroll down to the four stacked 424 uHz spectrograms. On the 26th and [...] Content analysis details: (0.0 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 RCVD_IN_DNSWL_NONE RBL: Sender listed at http://www.dnswl.org/, no trust [74.6.132.42 listed in list.dnswl.org] -0.0 RCVD_IN_MSPIKE_H2 RBL: Average reputation (+2) [74.6.132.42 listed in wl.mailspike.net] -0.0 SPF_PASS SPF: sender matches SPF record 0.0 FREEMAIL_FROM Sender email is commonly abused enduser mail provider (markusvester[at]aol.com) 0.0 HTML_MESSAGE BODY: HTML included in message 0.0 T_DKIM_INVALID DKIM-Signature header exists but is not valid X-Scan-Signature: 0a8bac5594b583e1d7c1e245a9e3ea16 Subject: Re: LF: VLF Carrier on 8270.01 Hz from a ground loop antenna - The 6th station on Paul's spectrogram Content-Type: multipart/alternative; boundary="----=_Part_10594354_889982719.1546112252714" X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: *** X-Spam-Status: No, hits=3.5 required=5.0 tests=FORGED_MUA_MOZILLA,HTML_30_40, HTML_MESSAGE autolearn=no version=2.63 X-SA-Exim-Scanned: Yes Sender: owner-rsgb_lf_group@blacksheep.org Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org X-Listname: rsgb_lf_group X-SA-Exim-Rcpt-To: rs_out_1@blacksheep.org X-SA-Exim-Scanned: No; SAEximRunCond expanded to false ------=_Part_10594354_889982719.1546112252714 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable Hi Jim, thanks=C2=A0for your comments! >> higher elevation angles ...=C2=A0 could emphasize the process=20 Yes I think that is the case.=C2=A0We can try to verify the hypothesis=C2= =A0on=C2=A0receive:=C2=A0Go to the DL0AO grabber https://vlf.u01.de/ and sc= roll down to the four stacked 424 uHz spectrograms. On the 26th and 27th, S= tefan's trace from the institute (8270.000 Hz) went through=C2=A0midday min= ima around 12 UT. On the earth loop shown in vlf3 (top spectrogram, labeled= "EW"), the minimum=C2=A0is indeed much=C2=A0deeper=C2=A0than on the E-fiel= d probe (vlf11, "V"). Best 73, Markus -----Urspr=C3=BCngliche Mitteilung----- Von: hvanesce An: rsgb_lf_group Verschickt: Sa, 29. Dez 2018 17:47 Betreff: RE: LF: VLF Carrier on 8270.01 Hz from a ground loop antenna - The= 6th station on Paul's spectrogram #yiv2506989069 #yiv2506989069 -- _filtered #yiv2506989069 {font-family:Cali= bri;panose-1:2 15 5 2 2 2 4 3 2 4;} _filtered #yiv2506989069 {font-family:T= ahoma;panose-1:2 11 6 4 3 5 4 4 2 4;} #yiv2506989069 #yiv2506989069 p.yiv25= 06989069MsoNormal, #yiv2506989069 li.yiv2506989069MsoNormal, #yiv2506989069= div.yiv2506989069MsoNormal {margin:0in;margin-bottom:.0001pt;font-size:12.= 0pt;font-family:New;} #yiv2506989069 a:link, #yiv2506989069 span.yiv2506989= 069MsoHyperlink {color:blue;text-decoration:underline;} #yiv2506989069 a:vi= sited, #yiv2506989069 span.yiv2506989069MsoHyperlinkFollowed {color:purple;= text-decoration:underline;} #yiv2506989069 p.yiv2506989069MsoAcetate, #yiv2= 506989069 li.yiv2506989069MsoAcetate, #yiv2506989069 div.yiv2506989069MsoAc= etate {margin:0in;margin-bottom:.0001pt;font-size:8.0pt;} #yiv2506989069 sp= an.yiv2506989069BalloonTextChar {} #yiv2506989069 span.yiv2506989069EmailSt= yle19 {color:#1F497D;} #yiv2506989069 .yiv2506989069MsoChpDefault {} _filte= red #yiv2506989069 {margin:1.0in 1.0in 1.0in 1.0in;} #yiv2506989069 div.yiv= 2506989069WordSection1 {} #yiv2506989069=20 Good diagnosis Markus; and excellent to see six ~ 8270 Hz signals on Paul= =E2=80=99s grabber!=20 =C2=A0I wonder if the distribution of the Earth loop=E2=80=99s radiation pa= ttern includes a somewhat higher percentage of higher elevation angles (tha= n with the five electric field antennas recently operating at 8270 Hz), whi= ch could emphasize the process that Markus described. I think that Paul=E2=80=99s grabber=E2=80=99s 186 hour window with the six = ~ 8270 Hz signals including diurnals and coordination is suitable for frami= ng, a beautiful sight. 73, Jim AA5BW=C2=A0=C2=A0 =C2=A0 =C2=A0 From: owner-rsgb_lf_group@blacksheep.org [mailto:owner-rsgb_lf_group@blacks= heep.org] On Behalf Of Markus Vester Sent: Saturday, December 29, 2018 8:55 AM To: rsgb_lf_group@blacksheep.org Subject: Re: LF: VLF Carrier on 8270.01 Hz from a ground loop antenna - The= 6th station on Paul's spectrogram =C2=A0 Hi Stefan, strangely, nothing is visible here in N=C3=BCrnberg now. At DL0AO, the portable transmission (~ 280 km) appears to be around 9 dB st= ronger compared to=C2=A0the institute in Heidelberg (~ 230 km,=C2=A0referen= ce measurement=C2=A0at 7:50 UT on Dec 27). However here in N=C3=BCrnberg it= seems to be=C2=A0the other way round: the transmission from the institute= =C2=A0(180 km) was=C2=A0strong=C2=A0 (up to 20 dB SNR) all day, but the sig= nal from=C2=A0the=C2=A0guiderails (230 km) is=C2=A0completely invisible now= .=C2=A0=20 The explanation may be that a sharp midday minimum exists at 230 km. Lookin= g at DL0AO traces, we can see that the signal from the institute indeed alm= ost disappeared at noon. During=C2=A0earlier Experiments=C2=A0it seemed tha= t the minimum was very pronounced on our 180 km path, but that was later in= the year around April and May. This seems to make sense, as=C2=A0higher so= lar Illumination pushed the midday ionoshere further dowen, requiring steep= er=C2=A0skywave=C2=A0angle to arrive=C2=A0at the same 3/2 lambda path diffe= rence for cancellation.=C2=A0 Best 73, Markus (DF6NM) -----Urspr=C3=BCngliche Mitteilung----- Von: DK7FC An: rsgb_lf_group Verschickt: Sa, 29. Dez 2018 13:45 Betreff: LF: VLF Carrier on 8270.01 Hz from a ground loop antenna - The 6th= station on Paul's spectrogram Hi VLF friends, Since 11:35 UTC i'm running about 2.5 A antenna current into my 900m=20 long ground loop antenna. Frequency is 8270.01 Hz. The signal is very=20 strong on my own grabber in 57.6 km distance but also at DF6NM, DL0AO=20 and it looks like there is a peak now on Paul's spectrogram building up=20 slowly. I intend to run the carrier for 2 hours or so, until the accu is almost=20 empty :-) The H bridge PA voltage is 175 V and the power consumption is 450 W. Today, the DC measuremant result is 66V for 1 A antenna current. It is=20 cold and wet! More soon. 73 de DK7FC/P in JN39WI PS: The QRN is exceptional low!!!! =C2=A0 ------=_Part_10594354_889982719.1546112252714 Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable
Hi Jim, thanks for your comments!

>> higher elevation angles= ...  could emphasize the process

Yes I think that is the case. We can try to verify the hypothesis&n= bsp;on receive: Go to the DL0AO grabber https://vlf.u01.de/ and s= croll down to the four stacked 424 uHz spectrograms. On the 26th and 27th, = Stefan's trace from the institute (8270.000 Hz) went through midday mi= nima around 12 UT. On the earth loop shown in vlf3 (top spectrogram, labele= d "EW"), the minimum is indeed much deeper than on the E-fie= ld probe (vlf11, "V").

Best 73,
Markus

-----Urspr=C3=BCngliche Mitteilung= -----
Von: hvanesce <hvanesce@comcast.net>
An: rsgb_lf_group <rsgb_lf_group@blacksheep.org>
V= erschickt: Sa, 29. Dez 2018 17:47
Betreff: RE: LF: VLF Carri= er on 8270.01 Hz from a ground loop antenna - The 6th station on Paul's spe= ctrogram