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 vBHNp9Tl018192 for ; Mon, 18 Dec 2017 00:51:12 +0100 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1eQib8-00008X-Nx for rs_out_1@blacksheep.org; Sun, 17 Dec 2017 23:43:58 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1eQib0-00008O-MJ for rsgb_lf_group@blacksheep.org; Sun, 17 Dec 2017 23:43:50 +0000 Received: from mail-qt0-x232.google.com ([2607:f8b0:400d:c0d::232]) by relay1.thorcom.net with esmtps (TLSv1.2:ECDHE-RSA-AES256-GCM-SHA384:256) (Exim 4.89) (envelope-from ) id 1eQiax-0000zO-II for rsgb_lf_group@blacksheep.org; Sun, 17 Dec 2017 23:43:49 +0000 Received: by mail-qt0-x232.google.com with SMTP id d4so18128424qtj.5 for ; Sun, 17 Dec 2017 15:43:46 -0800 (PST) X-DKIM-Result: Domain=gmail.com Result=Good and Known Domain DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:in-reply-to:references:from:date:message-id:subject:to; bh=0wLZikYzrz10yibpGonASyvHo+PXrllQgCM6CasWmPw=; b=ZXmADyKkk+1zMn0O8uDejQBLZGLTBpi+ZtSI055iYy7bJoriuAQZiUDqPuRkRcAdmW 1JNi9IhXMBnEIHZai1otWBr/ENatOy1pCC9OU3q6rMATk5vSXaxrSUvsazaRSy+DDxwY J0u7q6W+ZCNaZfbX4aP+hatEHA/gkXtKx8axIuxjTTq2mraHjj49LSZMe3PTU+0rppsl /rIayljQID8J2Vl2dId4Df84YfV+PtqMfydY5JavYavKDYgjsTtNm3PW///iCVaY9BSp SAP+qEHUy+8W6ngDMUJLuNIUa9FlyLy9GLcHchGNVyjFHtd9XEunBeNeoIoWJQXHmNJC bh3Q== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:in-reply-to:references:from:date :message-id:subject:to; bh=0wLZikYzrz10yibpGonASyvHo+PXrllQgCM6CasWmPw=; b=GwwZ0uz64IoQmhP8DYjhrrNP/laApYBPDz8DnoBntDqr72l65XN2kI7lF8eovgmSd8 Mc6LA+ud+nGjYwro+zIX1OlnkAPrAcjuruO9IEUiWen0FeuttGBPuQn+hZ2hzlrWUiTD hXUKVl+1cnV3rcLNG6my8ajmk0ZabiDiu6xAebR94hGf2yWd1Mp21Gx1HcvwhPIr0ReC TOx+Zh7uAMtfACOs44B+iaoyWwV8rYYtSodvcpKYY0ozqQo8FTE1lY851sNq2q2JdFUj QpwbgLp74Djcui9Wno1fy4EaNkN1V7S5qbW9NWe1LnIp+SHklC1c7vhkEzvIQ8jdNQwq Dftg== X-Gm-Message-State: AKGB3mJOBgtqHD1fp5PiGJxUxJp6fiStouzdfd0rapy4m7pR/zrkzx3g hb75u6BEBEFjQGsfC1hdEKUNmGEFh/0sLiF5jds= X-Google-Smtp-Source: ACJfBovkRT6Mwd8ILAEXwG3WzRzcGXYX2n4V3eK2qyt0c8NwBrKwozowAOoon0vpPpBtMnukg6mkSxiDtshMV/teTYQ= X-Received: by 10.200.2.150 with SMTP id p22mr30663168qtg.328.1513554223494; Sun, 17 Dec 2017 15:43:43 -0800 (PST) MIME-Version: 1.0 Received: by 10.140.25.140 with HTTP; Sun, 17 Dec 2017 15:43:42 -0800 (PST) Received: by 10.140.25.140 with HTTP; Sun, 17 Dec 2017 15:43:42 -0800 (PST) In-Reply-To: <160667f3c23-1723-5142e@webjas-vac249.srv.aolmail.net> References: <5f631e31-6572-0ac8-cc37-57e692fbb009@abelian.org> <160667f3c23-1723-5142e@webjas-vac249.srv.aolmail.net> From: Riccardo Zoli Date: Mon, 18 Dec 2017 00:43:42 +0100 Message-ID: To: LF Group X-Spam-Score: 0.3 (/) 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 Markus, Paul, VLF Yes, Markus, it's correct: my DDS (AD9850) is tuned with a frequency control word equal to *8671727* [...] Content analysis details: (0.3 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- 0.0 FREEMAIL_FROM Sender email is commonly abused enduser mail provider (riccardozoli80[at]gmail.com) 0.2 FREEMAIL_ENVFROM_END_DIGIT Envelope-from freemail username ends in digit (riccardozoli80[at]gmail.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: e2fb1a5df1e2bc3146a6f486b4640b03 Subject: Re: LF: EbNaut test at 8270.00332 from JN64bw Content-Type: multipart/alternative; boundary="f4030435c234d6fbe8056091cd1c" X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: ** X-Spam-Status: No, hits=2.4 required=5.0 tests=FROM_ENDS_IN_NUMS,HTML_20_30, HTML_MESSAGE,MAILTO_TO_SPAM_ADDR 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 --f4030435c234d6fbe8056091cd1c Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Hi Markus, Paul, VLF Yes, Markus, it's correct: my DDS (AD9850) is tuned with a frequency control word equal to *8671727* Then: (16384000 / 2^32) * 8671727 / 4 =3D *8270.0033187866 Hz* This is my effective TX QRG; BPSK is made by a XOR port. Thanks, Paul for your 3rd decode: incredibile performance of your reception system! Soon, I'll try to increase TX power with a new PA, paying attention, obviously, to aerial voltage and coil current rating (0.6mm wire). All the best 73 de Riccardo IW4DXW Il 17/Dic/2017 23:06, "Markus Vester" ha scritto: Ric mentioned that he uses a DDS with /4 divider. That setup would only maintain absolute phase as long as it is running continuously without interruption. Best 73, Markus Von: Riccardo Zoli An: LF Group Verschickt: Mo, 11. Dez 2017 23:11 Betreff: Re: LF: Little TX test at 8270.00046 from JN64 ... I'm running with a GPSDO at 16384.0000kHz clocking a DDS AD9850. The output is divided by 4 (SDR quadrature generator). Tuning dword is 8671724. ... -----Urspr=C3=BCngliche Mitteilung----- Von: Paul Nicholson An: rsgb_lf_group Verschickt: So, 17. Dez 2017 21:49 Betreff: Re: LF: EbNaut test at 8270.00332 from JN64bw > f =3D 8270.00332 Hz > Start time: 21:30:00 UTC > Symbol period: 30 s > Characters: 3 (repeated) > CRC bits: 24 > Coding 16K21A Decoded with Eb/N0 =3D +2.6 dB, rank 1, BER 41.6% Reference phase -120,-120,-150,-150. S/N -29.86 dB in 1Hz. Phase was -50.9 deg, previous nights were +19.1 and +35.7 degrees, has something changed the phase of the transmission? At Bielefeld, -9.0 dB; At Cumiana, -8.4 dB; (3 nights stacked =3D -4.2 dB, less than 2 nights stacked, phase did not repeat) At Warsaw, -13.8 dB; Good luck with the 2 char message, maybe that will decode at Cumiana. -- Paul Nicholson -- --f4030435c234d6fbe8056091cd1c Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable

Hi Markus, = Paul, VLF=C2=A0

Yes, Mar= kus, it's correct: my DDS (AD9850) is tuned with a frequency control wo= rd equal to

8671727=C2=A0

Then:

(16384000 / 2^32) * 8671727 / 4 = =3D

8270.0033187866 H= z

This is my = effective TX QRG;
BPSK is made by a XOR port.

Thanks, Paul for your 3rd = decode:
incredibile performance of your reception sy= stem!
Soon, I'll try to increase TX power with a= new PA, paying attention, obviously, to aerial voltage and coil current ra= ting (0.6mm wire).

All t= he best

73 de Riccardo I= W4DXW



Il 17/Dic/2017 23:06, "Markus= Vester" <markusvester@aol.= com> ha scritto:
Ric mentioned that=C2=A0he uses a DDS with /4 divider. That setup= would only maintain absolute phase=C2=A0as long as=C2=A0it is=C2=A0running= continuously without interruption.

Best 73,
Markus

=C2=A0= Von: Riccardo Zoli <riccardozoli80@gmail.com>
=C2=A0An: LF Group <rsgb_lf_group= @blacksheep.org>
=C2=A0Verschickt: Mo, 11. Dez 2017 23:11
=C2= =A0Betreff: Re: LF: Little TX test at 8270.00046 from JN64
...
=C2=A0= I'm running with a GPSDO at 16384.0000kHz clocking a DDS AD9850. The ou= tput is divided by 4 (SDR quadrature generator). Tuning dword is 8671724.= =C2=A0
...

-----Urspr=C3=BCngliche Mitteilung-----
Von: Paul = Nicholson <vlf0= 403@abelian.org>
An: rsgb_lf_group <rsgb_lf_group@blacksheep.org>= ;
Verschickt: So, 17. Dez 2017 21:49
Betreff: Re: LF: EbNaut test at = 8270.00332 from JN64bw


> f = =3D 8270.00332 Hz
> Start time: 21:30:00 UTC
> Symbol period:= 30 s
> Characters: 3 (repeated)
> CRC bits: 24
> Codi= ng 16K21A

Decoded with Eb/N0 =3D +2.6 dB, rank 1, BER 41.6%
Refer= ence phase -120,-120,-150,-150.
S/N -29.86 dB in 1Hz.

Phase was = -50.9 deg, previous nights were +19.1 and +35.7 degrees,
has something c= hanged the phase of the transmission?

At Bielefeld, -9.0 dB;

= At Cumiana, -8.4 dB;
(3 nights stacked =3D -4.2 dB, less than 2 nights s= tacked,
phase did not repeat)

At Warsaw, -13.8 dB;

Good = luck with the 2 char message, maybe that will decode
at Cumiana.

= --
Paul Nicholson
--


= --f4030435c234d6fbe8056091cd1c--