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 w85LxRvH006345 for ; Wed, 5 Sep 2018 23:59:30 +0200 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1fxfkd-0006T1-0b for rs_out_1@blacksheep.org; Wed, 05 Sep 2018 22:54:15 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1fxfkU-0006Ss-Ou for rsgb_lf_group@blacksheep.org; Wed, 05 Sep 2018 22:54:06 +0100 Received: from forward3o.cmail.yandex.net ([2a02:6b8:0:1a72::288]) by relay1.thorcom.net with esmtps (TLSv1.2:ECDHE-RSA-AES256-GCM-SHA384:256) (Exim 4.91_59-0488984) (envelope-from ) id 1fxfkT-0003ve-0o for rsgb_lf_group@blacksheep.org; Wed, 05 Sep 2018 22:54:05 +0100 Received: from mxback14g.mail.yandex.net (mxback14g.mail.yandex.net [IPv6:2a02:6b8:0:1472:2741:0:8b7:93]) by forward3o.cmail.yandex.net (Yandex) with ESMTP id BBC3420725 for ; Thu, 6 Sep 2018 00:54:01 +0300 (MSK) Received: from localhost (localhost [::1]) by mxback14g.mail.yandex.net (nwsmtp/Yandex) with ESMTP id StCI3CdRLw-s198fH6E; Thu, 06 Sep 2018 00:54:01 +0300 X-DKIM-Result: Domain=yandex.ru Result=Signature OK DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=yandex.ru; s=mail; t=1536184441; bh=Aixyr++lsYMXjHLGLu/ifPfO+TbHdtwBy/5OrO6iJXg=; h=From:To:In-Reply-To:References:Subject:Date:Message-Id; b=C2C8CRhmqsbYsfpzC4mK269Dgw1FYYfGsktpLeNLR5UN21t6rPVGvSb5hA8TZrUle tpnszTe7xOhEv5qBPLQuU9BQCNUrUsZkMIodnDqcEt1O29ivf5ZQ/1kZ1PUJqipLqg zvPWshp2kiDbLLfsD2I7biolBQR53tpTyZZPFsj8= Authentication-Results: mxback14g.mail.yandex.net; dkim=pass header.i=@yandex.ru Received: by sas1-0a6c2e2b59d7.qloud-c.yandex.net with HTTP; Thu, 06 Sep 2018 00:54:00 +0300 From: Roman To: rsgb_lf_group@blacksheep.org In-Reply-To: <5B904C48.9000302@posteo.de> References: <5B8FD14A.2080403@posteo.de> <14564361536176528@iva5-e9a4c5420a84.qloud-c.yandex.net> <5B904C48.9000302@posteo.de> MIME-Version: 1.0 X-Mailer: Yamail [ http://yandex.ru ] 5.0 Date: Thu, 06 Sep 2018 00:54:00 +0300 Message-Id: <13745221536184440@sas1-0a6c2e2b59d7.qloud-c.yandex.net> X-Spam-Score: -0.7 (/) 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: OK Stefan. Try it to do. may be wonderful results. Roman > Hello Roman, > > Yes maybe i'll build a quick PA tomorrow for LF and will transmit on LF > for 24 hours, each 10 minutes, WSPR-2. I have no idea at all how this > antenna performs on 137 kHz. Is it still a loop or rather a dipole or a > mixture? At least it has about the length of a full size dipole for 137 > kHz. I would TX at 10 W RF power only, so that a small accu covers some > hours. But i'm not yet sure if i can find the time to do it tomorrow. > > 73, Stefan > > PS: If the antenna acts as a dipole, then it is beaming to Russia directly. > > Am 05.09.2018 21:42, schrieb Roman: > >> Congrts, Stefan! >> >> We are follow by your success! >> Listen, do you planning to operate 136 kHz, I hear, tell me pse - do you planing try to TX with that ant on 477 kHz and 160M? >> I will be interestin to hear about results. >> >> 73! >> Roman >> >>> ULF, >>> >>> Last sunday i finally managed to detect a carrier transmission on the >>> 191 km band in the far field. In fact the distance is higher than 1/4 >>> wavelength. A new lowest frequency of a signal generated by amateurs, >>> detected in the far field. >>> >>> At 250 W RF power i transmitted for 2 hours (starting 08:08 UTC) on my >>> 900m long ground loop antenna. It seems to be a very hard band with poor >>> propagation. Furthermore my RX antenna becomes deaf below 2 kHz. So the >>> S/N is much lower as expected when comparing to the results at 1970 Hz. >>> Two spectrograms are arrached, showing the short trace in 424 uHz and >>> 212 uHz. >>> >>> Before finally entering the far field in the frequency range below 1 kHz >>> it may be necessary to build up an E field RX at the RX QTH. I first >>> step for that was done yesterday. >>> >>> To be continued... >>> >>> 73, Stefan -- 73! Roman, RW3ADB [...] Content analysis details: (-0.7 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- -0.7 RCVD_IN_DNSWL_LOW RBL: Sender listed at http://www.dnswl.org/, low trust [2a02:6b8:0:1a72:0:0:0:288 listed in] [list.dnswl.org] 0.0 FREEMAIL_FROM Sender email is commonly abused enduser mail provider (rw3adb[at]yandex.ru) -0.0 SPF_PASS SPF: sender matches SPF record 0.0 T_DKIM_INVALID DKIM-Signature header exists but is not valid X-Scan-Signature: 3f8d74a8c70dd416d0a3a1dbcb9bb89f Subject: Re: ULF: First far field detection at 1570 Hz Content-Transfer-Encoding: 7bit Content-Type: text/plain 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=none 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 OK Stefan. Try it to do. may be wonderful results. Roman > Hello Roman, > > Yes maybe i'll build a quick PA tomorrow for LF and will transmit on LF > for 24 hours, each 10 minutes, WSPR-2. I have no idea at all how this > antenna performs on 137 kHz. Is it still a loop or rather a dipole or a > mixture? At least it has about the length of a full size dipole for 137 > kHz. I would TX at 10 W RF power only, so that a small accu covers some > hours. But i'm not yet sure if i can find the time to do it tomorrow. > > 73, Stefan > > PS: If the antenna acts as a dipole, then it is beaming to Russia directly. > > Am 05.09.2018 21:42, schrieb Roman: > >> Congrts, Stefan! >> >> We are follow by your success! >> Listen, do you planning to operate 136 kHz, I hear, tell me pse - do you planing try to TX with that ant on 477 kHz and 160M? >> I will be interestin to hear about results. >> >> 73! >> Roman >> >>> ULF, >>> >>> Last sunday i finally managed to detect a carrier transmission on the >>> 191 km band in the far field. In fact the distance is higher than 1/4 >>> wavelength. A new lowest frequency of a signal generated by amateurs, >>> detected in the far field. >>> >>> At 250 W RF power i transmitted for 2 hours (starting 08:08 UTC) on my >>> 900m long ground loop antenna. It seems to be a very hard band with poor >>> propagation. Furthermore my RX antenna becomes deaf below 2 kHz. So the >>> S/N is much lower as expected when comparing to the results at 1970 Hz. >>> Two spectrograms are arrached, showing the short trace in 424 uHz and >>> 212 uHz. >>> >>> Before finally entering the far field in the frequency range below 1 kHz >>> it may be necessary to build up an E field RX at the RX QTH. I first >>> step for that was done yesterday. >>> >>> To be continued... >>> >>> 73, Stefan -- 73! Roman, RW3ADB