Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on lipkowski.org X-Spam-Level: X-Spam-Status: No, score=0.5 required=5.0 tests=FREEMAIL_FORGED_FROMDOMAIN, FREEMAIL_FROM,HEADER_FROM_DIFFERENT_DOMAINS,HTML_MESSAGE,RCVD_IN_SORBS_SPAM, SPF_PASS,T_DKIM_INVALID,URIBL_BLOCKED autolearn=no autolearn_force=no version=3.4.0 X-Spam-DCC: EATSERVER: mailn 1166; Body=2 Fuz1=2 Fuz2=2 Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by lipkowski.org (8.14.4/8.14.4/Debian-8+deb8u2) with ESMTP id v7LDBJUc011196 for ; Mon, 21 Aug 2017 15:11:20 +0200 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1djmPX-0008Hx-5f for rs_out_1@blacksheep.org; Mon, 21 Aug 2017 14:06:31 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1djmPW-0008Ho-OQ for rsgb_lf_group@blacksheep.org; Mon, 21 Aug 2017 14:06:30 +0100 Received: from omr-m002e.mx.aol.com ([204.29.186.2]) by relay1.thorcom.net with esmtps (TLSv1:DHE-RSA-AES256-SHA:256) (Exim 4.89) (envelope-from ) id 1djmPS-0001id-UM for rsgb_lf_group@blacksheep.org; Mon, 21 Aug 2017 14:06:29 +0100 Received: from mtaomg-aak02.mx.aol.com (mtaomg-aak02.mx.aol.com [172.27.2.228]) by omr-m002e.mx.aol.com (Outbound Mail Relay) with ESMTP id 84CBF38000B1 for ; Mon, 21 Aug 2017 09:06:24 -0400 (EDT) Received: from core-acb02c.mail.aol.com (core-acb02.mail.aol.com [172.27.24.2]) by mtaomg-aak02.mx.aol.com (OMAG/Core Interface) with ESMTP id 2C1E538000085 for ; Mon, 21 Aug 2017 09:06:24 -0400 (EDT) Received: from 188.192.44.165 by webjas-vab234.srv.aolmail.net (10.96.18.237) with HTTP (WebMailUI); Mon, 21 Aug 2017 09:06:22 -0400 Date: Mon, 21 Aug 2017 09:06:24 -0400 From: Markus Vester To: rsgb_lf_group@blacksheep.org Message-Id: <15e04e6b806-c06-9f4@webjas-vab234.srv.aolmail.net> In-Reply-To: <599AD64B.4030708@posteo.de> MIME-Version: 1.0 X-MB-Message-Source: WebUI X-MB-Message-Type: User X-Mailer: JAS STD X-Originating-IP: [188.192.44.165] x-aol-global-disposition: G DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=mx.aol.com; s=20150623; t=1503320784; bh=Crpk6Wf8EQbI/9CYbZjx1Cp3ZBNa/7OpSvDbO2ONFps=; h=From:To:Subject:Message-Id:Date:MIME-Version:Content-Type; b=Lkcwh8/aaDpuFE+Ha56LR4bNlZNtartSAWWiJ8F3R+CrVrT8Xoj7g39oKNbKq8iyA VYMTedmMcaJK0t4+7LQIYIBeZD3Cfx+a61wULAQEi8pge/OWXxYJk9xTMLNOah0Y0v 6WmepjxAilZOaOiGnz8WlICCCFogvlxKN4ZbepjM= x-aol-sid: 3039ac1b02e4599adad03889 X-Scan-Signature: fa743f59d022704fe4104ed922c6083c Subject: Re: VLF: Carrier on 4470.005 Hz! - EbNaut test Content-Type: multipart/alternative; boundary="----=_Part_2636_697734254.1503320782854" 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 X-Scanned-By: MIMEDefang 2.75 Status: O X-Status: X-Keywords: X-UID: 12424 ------=_Part_2636_697734254.1503320782854 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Thanks Stefan! Distance between DF6NM and DL0AO is 48 km. Yes a slow window from your tree might possibly receive my signal on 4470, = albeit marginally, with perhaps 10 to 12 dB in 31 uHz. Unfortunately I won'= t be able to do long daytime transmissions before the next weekend. Best 73, Markus -----Urspr=C3=BCngliche Mitteilung-----=20 Von: DK7FC An: rsgb_lf_group Verschickt: Mo, 21. Aug 2017 14:48 Betreff: Re: VLF: Carrier on 4470.005 Hz! - EbNaut test That's cool Markus! What is the distance? Must be quite close to 50 km, rig= ht? Would it make sense to set up a 47 uHz or 31 uHz or whatever window lookin= g for your signal? 73, Stefan Am 21.08.2017 14:23, schrieb Markus Vester:=20 Tried a short message this morning (2 char 8K19A, 10s, start 5:00:00.3 UT, = duration 1 hour + 80 sec), which decoded instantly from the DL0AO W cardioi= d (attached), as well as the EW earth antenna with almost identical SNR.=20 73, Markus (DF6NM) PS: 59 on VLF - really? Just a birthday greeting to myself ;-) =20 -----Urspr=C3=BCngliche Mitteilung-----=20 Von: DK7FC An: rsgb_lf_group Verschickt: Mo, 21. Aug 2017 9:35 Betreff: Re: VLF: Carrier on 4470.005 Hz! Hi Paul, Markus, VLF, That's already a nice peak! Markus' 'OK message' came to late last night, = so i let the TX running without starting EbNaut. That's not bad at all beca= use now you will get more energy to produce a better peak. I'm happy with the SNR on these two locations from my first signal between= 4...5 kHz. I'd like to start a somwwhat longer EbNaut message which will be repeated = daily until there are decodes on your RX sites. For DL0AO it could work wit= h 1...2 days stacked and for Paul we may need 2...4 days: f =3D 4470.005000 Hz Start time: 22.August.2017 04:00:00 UTC Symbol period: 60 s Characters: 5 CRC bits: 6 Coding 16K21A Duration: 14h56min Antenna current: 150 mA (suggested optimum list length: 9) Great, i'm excited and curious to see if you will get that message :-) 73, Stefan Am 21.08.2017 00:58, schrieb Paul Nicholson:=20 > Anything on Pauls RX?=20 So far,=20 http://abelian.org/vlf/tmp/170820a.gif=20 About 10.5 dB in the 12 hour integration.=20 --=20 Paul Nicholson=20 -- ------=_Part_2636_697734254.1503320782854 Content-Type: text/html; charset=utf-8 Content-Transfer-Encoding: quoted-printable
Thanks Stefan! Distance between DF6NM and DL0AO is 48 km= .

Yes a slow window from your tree might possibl= y receive my signal on 4470, albeit marginally, with perhaps 10 to 12 = dB in 31 uHz. Unfortunately I won't be able to do long daytime transmi= ssions before the next weekend.

Best 73,
Markus

-----Urspr= =C3=BCngliche Mitteilung-----
Von: DK7FC <selberdenken@posteo.de>=
An: rsgb_lf_group <rsgb_lf_group@blacksheep.org>
Verschickt: M= o, 21. Aug 2017 14:48
Betreff: Re: VLF: Carrier on 4470.005 Hz! - EbNaut= test

That's cool Markus! What is the distance? Must be quite close to 50 km, right?
Would it make sense to set up a 47 uHz or 31 uHz or whatever window looking for your signal?

73, Stefan

Am 21.08.2017 14:23, schrieb Markus Vester:
Tried a short message this morning (2 char 8K19A, 10s, start 5:00:= 00.3 UT, duration 1 hour + 80 sec), which decoded instantly from the DL0AO= W cardioid (attached), as well as the EW earth antenna with almost identical SNR. 

73, Markus (DF6NM)

PS: 59 on VLF - really? Just a birthday greeting to myself ;-) &n= bsp;


-----Urspr=C3=BCngliche Mitteilung-----
Von: DK7FC <selberd= enken@posteo.de>
An: rsgb_lf_group
Hi Paul, Markus, VLF,

That's already a nice peak! Markus' 'OK message' came to late last night, so i let the TX running without starting EbNaut. That's not bad at all because now you will get more energy to produce a better peak.
I'm happy with the SNR on these two locations from my first signal between 4...5 kHz.
I'd like to start a somwwhat longer EbNaut message which will be repeated daily until there are decodes on your RX sites. For DL0AO it could work with 1...2 days stacked and for Paul we may need 2...4 days:

f =3D 4470.005000 Hz
Start time: 22.August.2017  04:00:00 UTC
Symbol period: 60 s
Characters: 5
CRC bits: 6
Coding 16K21A
Duration: 14h56min
Antenna current: 150 mA
(suggested optimum list length: 9)

Great, i'm excited and curious to see if you will get that message :-)

73, Stefan



Am 21.08.2017 00:58, schrieb Paul Nicholson:

> Anything on Pauls RX?

So far,

 http://abelian.org/vlf/tmp/170820a.gif

About 10.5 dB in the 12 hour integration.

--
Paul Nicholson
--

------=_Part_2636_697734254.1503320782854--