Return-Path: Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by klubnl.pl (8.14.4/8.14.4/Debian-8+deb8u2) with ESMTP id w897w93W011176 for ; Sun, 9 Sep 2018 09:58:12 +0200 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1fyuUi-0007jT-0p for rs_out_1@blacksheep.org; Sun, 09 Sep 2018 08:50:56 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1fyuTX-0007jB-Ee for rsgb_lf_group@blacksheep.org; Sun, 09 Sep 2018 08:49:43 +0100 Received: from smtp2web.tin.it ([212.216.176.236]) by relay1.thorcom.net with esmtp (Exim 4.91_59-0488984) (envelope-from ) id 1fyuTU-0005kP-83 for rsgb_lf_group@blacksheep.org; Sun, 09 Sep 2018 08:49:40 +0100 Received: from feu3 (10.192.64.13) by smtp2web.tin.it (8.6.060.43) id 5B27C17301E54F5B for rsgb_lf_group@blacksheep.org; Sun, 9 Sep 2018 09:49:35 +0200 Received: from (79.41.77.149) by webmailtin.pc.tim.it; Sun, 9 Sep 2018 09:49:35 +0200 Message-ID: <165bd4eb18a.marcocadeddu@tin.it> Date: Sun, 9 Sep 2018 09:49:35 +0200 (CEST) From: "marcocadeddu@tin.it" To: Mime-Version: 1.0 X-Originating-IP: 79.41.77.149:1559 X-Spam-Score: 1.0 (+) X-Spam-Report: Spam detection software, running on the system "relay1.thorcom.net", has NOT identified this incoming email as spam. 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 Stefan, very high (local) noise here on 137 and no decodes at all so switched to 470 kHz. On 137 I had a very strong multisignal (every 50Hz snaking signals) preventing every possible reception :-( If the rail radiates as depicted from Markus, in quiet conditions you should be more than copiable ;-) [...] Content analysis details: (1.0 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 RCVD_IN_DNSWL_NONE RBL: Sender listed at http://www.dnswl.org/, no trust [212.216.176.236 listed in list.dnswl.org] 0.0 FREEMAIL_FROM Sender email is commonly abused enduser mail provider (marcocadeddu[at]tin.it) -0.0 SPF_PASS SPF: sender matches SPF record -0.0 T_RP_MATCHES_RCVD Envelope sender domain matches handover relay domain 0.0 HTML_MESSAGE BODY: HTML included in message -0.0 RCVD_IN_MSPIKE_H3 RBL: Good reputation (+3) [212.216.176.236 listed in wl.mailspike.net] -0.0 RCVD_IN_MSPIKE_WL Mailspike good senders 1.0 FREEMAIL_REPLYTO Reply-To/From or Reply-To/body contain different freemails X-Scan-Signature: 11963a33d604c33786d8f1de94ce267f Subject: R: Re: LF: Re: 137 kHz WSPR-2 on a 900m long ground loop, this weekend Content-Type: multipart/alternative; boundary="----=_Part_38490_10432933.1536479375757" X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.0 required=5.0 tests=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_38490_10432933.1536479375757 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable Hi Stefan, very high (local) noise here on 137 and no decodes at all so switched to 47= 0 kHz. On 137 I had a very strong multisignal (every 50Hz snaking signals) prevent= ing every possible reception :-( If the rail radiates as depicted from Markus, in quiet conditions you shoul= d be more than copiable ;-) 73, Marco IK1HSS=20 ----Messaggio originale---- Da: markusvester@aol.com Data: 8-set-2018 23.52 A: Ogg: Re: LF: Re: 137 kHz WSPR-2 on a 900m long ground loop, this weekend Hi Stefan, indeed your signal has been very consistent around 5 uV/m and -8 to -10 dB = in the afternoon. At 230 km range, this would indicate a radiated power aro= und 40 mW (EMRP), or 0.4% antenna efficiency. Around nightfall, heavy QSB s= et in, with occaional minima where the signal fell below the decode thresho= ld but was still ghastly visible in the waterfall with heavy RDF colour abe= rrations. I suspect that the diplole emits more high angle radiation than a= vertical, possibly leading to deeper fading at intermediate ranges.=20 Best 73, Markus (DF6NM)-----Urspr=C3=BCngliche Mitteilung----- Von: DK7FC An: rsgb_lf_group Verschickt: S= a, 8. Sept 2018 22:45Betreff: Re: LF: Re: 137 kHz WSPR-2 on a 900m long gro= und loop, this weekendThanks to the many stations beeing RX-active on LF WS= PR tonite.It is very strange, the SNR reported by the stations below 500 km= distance was very good in daytime but now at night there are not more stat= ions receiving me, except 2 reports by 2E0ILY.Also the software just report= s JN39 instead of JN39WI.Maybe some reports are not uploaded or shown on th= e database, because of conflicting locators for the same callsign?I can har= dly imagine that nothing comes through at night. Very odd.Does someone have= an explanation what can cause these good results during the day and such b= ad results at night?73, StefanPS: My QRG is 137.425 kHz and starts each xx:= x0 (each 10 minutes). Maybe someone can see somethning on the waterfall dis= play?... ------=_Part_38490_10432933.1536479375757 Content-Type: text/html;charset="UTF-8" Content-Transfer-Encoding: quoted-printable Hi Stefan,

very high (local) noise here on 137 and no decodes at all= so switched to 470 kHz.
On 137 I had a very strong multisignal (every 5= 0Hz snaking signals) preventing every possible reception :-(
If the rail= radiates as depicted from Markus, in quiet conditions you should be more t= han copiable ;-)

73, Marco IK1HSS

----Messaggio originale----
Da: markusvester@aol.com
Data: 8-set-2018 23.52
A: <rsgb_lf_group@blacksheep.org>
Ogg: Re: LF: Re: 137 kHz WSPR-2 on a 900m long ground loop, this weekend
Hi Stefan,

indeed your signal has be= en very consistent around 5 uV/m and -8 to -10 dB in the afternoon. At= 230 km range, this would indicate a radiated power around 40 mW (EMRP= ), or 0.4% antenna efficiency. Around nightfall, heavy QSB set in, wit= h occaional minima where the signal fell below the decode threshold but was= still ghastly visible in the waterfall with heavy RDF colou= r aberrations. I suspect that the diplole emits more high angle radiat= ion than a vertical, possibly leading to deeper fading at in= termediate ranges. 

Best 73,
Markus (DF6NM)

-----Urspr=C3=BCngliche Mitteilung-----
Von: DK7FC <selberdenken@posteo.de>
An: r= sgb_lf_group <rsgb_lf_group@blacksheep.org>
Verschick= t: Sa, 8. Sept 2018 22:45
Betreff: Re: LF: Re: 137 kHz WSPR= -2 on a 900m long ground loop, this weekend

Thanks to the many stations beeing RX-active on LF WSPR tonite.

It is very strange, the SNR reported by the s= tations below 500 km
distance was very good in daytime but= now at night there are not more
stations receiving me, ex= cept 2 reports by 2E0ILY.
Also the software just reports JN= 39 instead of JN39WI.
Maybe some reports are not uploaded o= r shown on the database, because of
conflicting locators f= or the same callsign?
I can hardly imagine that nothing com= es through at night. Very odd.
Does someone have an explana= tion what can cause these good results
during the day and = such bad results at night?

73, Stefan

PS: My QRG is 137.425 kHz and starts each xx:x= 0 (each 10 minutes). Maybe
someone can see somethning on t= he waterfall display?
...


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