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 w32K6R4C022173 for ; Mon, 2 Apr 2018 22:06:29 +0200 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1f35ad-00019D-VJ for rs_out_1@blacksheep.org; Mon, 02 Apr 2018 20:58:03 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1f35aW-000194-Hn for rsgb_lf_group@blacksheep.org; Mon, 02 Apr 2018 20:57:56 +0100 Received: from omr-a003e.mx.aol.com ([204.29.186.57]) by relay1.thorcom.net with esmtps (TLSv1:DHE-RSA-AES256-SHA:256) (Exim 4.89) (envelope-from ) id 1f35aS-0007On-2L for rsgb_lf_group@blacksheep.org; Mon, 02 Apr 2018 20:57:55 +0100 Received: from mtaomg-mcd01.mx.aol.com (mtaomg-mcd01.mx.aol.com [172.26.223.207]) by omr-a003e.mx.aol.com (Outbound Mail Relay) with ESMTP id 3321E3800154 for ; Mon, 2 Apr 2018 15:57:50 -0400 (EDT) Received: from core-acx09e.mail.aol.com (core-acx09.mail.aol.com [172.27.155.134]) by mtaomg-mcd01.mx.aol.com (OMAG/Core Interface) with ESMTP id D22E238000081 for ; Mon, 2 Apr 2018 15:57:49 -0400 (EDT) Received: from 188.194.222.230 by webjasstg-vaa41.srv.aolmail.net (10.96.25.44) with HTTP (WebMailUI); Mon, 02 Apr 2018 15:57:48 -0400 Date: Mon, 2 Apr 2018 15:57:49 -0400 From: Markus Vester To: rsgb_lf_group@blacksheep.org Message-Id: <16287efe542-179c-20a3@webjasstg-vaa41.srv.aolmail.net> In-Reply-To: <5AC2850B.1000306@posteo.de> MIME-Version: 1.0 X-MB-Message-Source: WebUI X-MB-Message-Type: User X-Mailer: JAS STD X-Originating-IP: [188.194.222.230] x-aol-global-disposition: G DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=mx.aol.com; s=20150623; t=1522699070; bh=Iz7hjFygm0Abm+CnWGGlZfDJfHVyr3tEVMM0HA0NE00=; h=From:To:Subject:Message-Id:Date:MIME-Version:Content-Type; b=W3Girfh9k/qsoDSFYFBLyW4HxCfdkYFeH5LM9Xup6alj5fQ9YD2QlXyW20uH4to7I zNXZpjPodDrMiarklbm4erjAVdljVbCk7Rp1jUnyDDNa2PpqO5J0R3txY1wcKPXJp3 yIeR/ifwbNo2DT5qnndr6vOQV+dKkQpvjysBrvxE= x-aol-sid: 3039ac1adfcf5ac28b3d2559 X-Spam-Score: 0.0 (/) 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 the administrator of that system for details. Content preview: Hi Stefan, normally 1pps harmonics are not such a big problem at LF as on VLF because the harmonic number is much larger. Also the 1pps would have to ingress into the receiver, rather than leakage from the other soundcard channel. [...] Content analysis details: (0.0 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- 0.0 FREEMAIL_FROM Sender email is commonly abused enduser mail provider (markusvester[at]aol.com) -0.0 T_RP_MATCHES_RCVD Envelope sender domain matches handover relay domain 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: ae3221d431bd19e5880aa98eda07ece4 Subject: Re: LF: EbNaut April 1 / 2 Content-Type: multipart/alternative; boundary="----=_Part_10908_144417449.1522699068738" 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_10908_144417449.1522699068738 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Hi Stefan, normally 1pps harmonics are not such a big problem at LF as on VLF because = the harmonic number is much larger. Also the 1pps would have to ingress int= o the receiver, rather than leakage from the other soundcard channel. Having said that, however your opds instance may be the one exception to th= e rule ;-) There's a 1 Hz fence around 137500 Hz, but this is apparently ca= used by second-order intermodulation (MSF and DCF77, 60 + 77.5 kHz) in the = broadband antenna buffer. Here in Europe I would only try to avoid Loran lines from Slonim (6.25000 H= z harmonics from GRI 8000, providing useful calibration marks) and maybe An= thorn (7.428316745 Hz from GRI 6731). Unfortunately this is no longer a "pr= oblem" in America. Best 73, Markus -----Urspr=C3=BCngliche Mitteilung-----=20 Von: DK7FC An: rsgb_lf_group Verschickt: Mo, 2. Apr 2018 21:33 Betreff: Re: LF: EbNaut April 1 / 2 Hi Markus,=20 Even on LF i would avoid integer Hz frequencies. 73, GL, Stefan Am 02.04.2018 21:22, schrieb Markus Vester:=20 Thanks for info John, good to know. So let's do one more night, same schedu= le as last night, 22 to 4 UT on 137520 Hz - assuming that frequency is clea= r for you? Best 73, Markus (DF6NM) -----Urspr=C3=BCngliche Mitteilung-----=20 Von: John Andrews An: rsgb_lf_group Verschickt: Mo, 2. Apr 2018 21:10 Betreff: Re: LF: EbNaut April 1 / 2 Markus, Just to let you know that others are looking as well. I've easily been=20 able to decode the K3RWR transmissions, but have had no luck with the EU= =20 signals thus far. Still working through the possibilities, though! And=20 being 100 km closer to you than W1VD, I have no excuse. John, W1TAG On 4/2/2018 2:39 PM, Markus Vester wrote: > Many thanks again to Jay, I'm really amazed that you were able to=20 > capture every possible transmission from here between midnight and 4 UT. >=20 > BTW I don't think that Ric's ERP is any weaker than mine. Maybe the=20 > extra distance across the mountains does make a difference - we've got= =20 > to flatten the Alps ;-) >=20 > Domenico's auto-decoder works like a charm - it didn't miss a single=20 > transmission from Ric or myself, including a couple of daylight tests. >=20 > Joe DF2JP was also sending his message every hour, albeit with slightly= =20 > changed format (5ch 3s 8K19A, but CRC 16 instead of 20). As far as I=20 > could see, his frequency wandered gradually from 137523.963 Hz at 0 UT= =20 > to 137524.009 Hz at 6 UT. He left the unmodulated carrier on during each= =20 > other half hour, so you may be able to find his trace in a spectrogram,= =20 > or perhaps a peak in the red "show_rawsyms" spectrum. Joe mentioned that= =20 > he will be able to fix GPS-lock soon. >=20 > Also had another look on Rob's frequency but again nothing found. >=20 > Jay I wonder if you are also preparing to send EbNaut yourself? For the= =20 > time being, our current ad-hoc arrangement would probably work both=20 > ways: Europeans start transmitting on the full hour within a few Hz of= =20 > 137522, and Americans send near 137490 during second half-hours. >=20 > Best 73, > Markus >=20 >=20 >=20 > -----Urspr=C3=BCngliche Mitteilung----- > Von: jrusgrove > An: rsgb_lf_group > Verschickt: Mo, 2. Apr 2018 13:31 > Betreff: Re: LF: EbNaut April 1 / 2 >=20 > Markus, Riccardo & EbNaut enthusiasts > DF6NM 5 decodes, sadly no decode of IW4DXW ;~( . Riccardo, any chance=20 > for more transmitter power? > DF6NM: > 0000 Rank 0 EbN0 6.4 decoded > 0100 Rank 0 EbN0 7.8 decoded > 0200 Rank 0 EbN0 5.3 decoded > 0300 Rank 0 EbN0 9.3 decoded > 0400 Rank 2561 EbN0 -1.7 decoded > Decoder attachments below. > Jay W1VD >=20 > Re: LF: EbNaut April 1 / 2 > Von: Domenico IZ7SLZ > An: rsgb_lf_group > Datum: Mo, 2. Apr 2018 11:35 > Hello Markus, LF, >=20 > Transmissions from you and from Riccardo have been decoded here. >=20 > Congratulations for the good going. > http://www.qsl.net/iz7slz/ >=20 > I'm still trying to extract the 21.00UT message from DF2JP but NIL till = now. >=20 > BTW his carrier was strong here in JN80 so it is only matter to guess=20 > the right frequency and time offsets. >=20 > Compliments also to Joe for his EbNaut tests. If necessary, i can change= =20 > settings of my auto-decoder if Joe wants make further transmissions. >=20 > It is a bank holiday today here and the neighbor garage - jamming my LF= =20 > reception during the day - is closed. So very low noise now: good for=20 > testing EbNaut with ground waves. >=20 > All the best >=20 > Domenico, iz7slz > ------=_Part_10908_144417449.1522699068738 Content-Type: text/html; charset=utf-8 Content-Transfer-Encoding: quoted-printable
Hi Stefan,

normally 1pps harmonics are not such a= big problem at LF as on VLF because the harmonic number is much large= r. Also the 1pps would have to ingress into the receiver, rather than leaka= ge from the other soundcard channel.

Having said that, however = your opds instance may be the one exception to the rule ;-) There's a = 1 Hz fence around 137500 Hz, but this is apparently caused by sec= ond-order intermodulation (MSF and DCF77, 60 + 77.5 kHz) in the broadband a= ntenna buffer.

Here in Europe I would only try to avoid Loran l= ines from Slonim (6.25000 Hz harmonics from GRI 8000, providing useful cali= bration marks) and maybe Anthorn (7.428316745 Hz from GRI 6731). Unfor= tunately this is no longer a "problem" in America.

Best 73,
Marku= s


-----Urspr=C3=BCngliche Mitteilung-----
Von: DK7FC <sel= berdenken@posteo.de>
An: rsgb_lf_group <rsgb_lf_group@blacksheep.o= rg>
Verschickt: Mo, 2. Apr 2018 21:33
Betreff: Re: LF: EbNaut Apri= l 1 / 2

Hi Markus,

Even on LF i would avoid integer Hz frequencies.

73, GL, Stefan

Am 02.04.2018 21:22, schrieb Markus Vester:
Thanks for info John, good to know. So let's do one more night, same schedule as last night, 22 to 4 UT on 137520 Hz - assuming that frequency is clear for you?

Best 73,
Markus (DF6NM)

-----Urspr=C3=BCngliche Mitteilung-----
Von: John Andrews <w1tag= @charter.net>
An: rsgb_lf_group > he will be able to fix GPS-lock soon.
>
> Also had another look on Rob's frequency but again nothing found.
>
> Jay I wonder if you are also preparing to send EbNaut yourself? For the
> time being, our current ad-hoc arrangement would probably work both
> ways: Europeans start transmitting on the full hour within a few Hz of
> 137522, and Americans send near 137490 during second half-hours.
>
> Best 73,
> Markus
>
>
>
> -----Urspr=C3=BCngliche Mitteilung-----
> Von: jrusgrove <jrusgrove@comcast.net>
> An: rsgb_lf_group <rsgb_lf_group@blacksheep.org<= /a>>
> Verschickt: Mo, 2. Apr 2018 13:31
> Betreff: Re: LF: EbNaut April 1 / 2
>
> Markus, Riccardo & EbNaut enthusiasts
> DF6NM 5 decodes, sadly no decode of IW4DXW ;~( . Riccardo, any chance
> for more transmitter power?
> DF6NM:
> 0000 Rank 0 EbN0 6.4 decoded
> 0100 Rank 0 EbN0 7.8 decoded
> 0200 Rank 0 EbN0 5.3 decoded
> 0300 Rank 0 EbN0 9.3 decoded
> 0400 Rank 2561 EbN0 -1.7 decoded
> Decoder attachments below.
> Jay W1VD
>
> Re: LF: EbNaut April 1 / 2
> Von: Domenico IZ7SLZ <iz7slz.domenico@gmail.com= >
> An: rsgb_lf_group <rsgb_lf_group@blacksheep.org<= /a>>
> Datum: Mo, 2. Apr 2018 11:35
> Hello Markus, LF,
>
> Transmissions from you and from Riccardo have been decoded here.
>
> Congratulations for the good going.
> http://www.qsl.net/iz7slz/
>
> I'm still trying to extract the 21.00UT message from DF2JP but NIL till now.
>
> BTW his carrier was strong here in JN80 so it is only matter to guess
> the right frequency and time offsets.
>
> Compliments also to Joe for his EbNaut tests. If necessary, i can change
> settings of my auto-decoder if Joe wants make further transmissions.
>
> It is a bank holiday today here and the neighbor garage - jamming my LF
> reception during the day - is closed. So very low noise now: good for
> testing EbNaut with ground waves.
>
> All the best
>
> Domenico, iz7slz
>

------=_Part_10908_144417449.1522699068738--