Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on lipkowski.org X-Spam-Level: X-Spam-Status: No, score=-2.3 required=5.0 tests=FREEMAIL_FORGED_FROMDOMAIN, FREEMAIL_FROM,HEADER_FROM_DIFFERENT_DOMAINS,HTML_MESSAGE,RCVD_IN_DNSWL_MED, SPF_PASS,T_DKIM_INVALID autolearn=ham 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+deb8u1) with ESMTP id uBTMQGtD001721 for ; Thu, 29 Dec 2016 23:26:17 +0100 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1cMj5V-000631-Ns for rs_out_1@blacksheep.org; Thu, 29 Dec 2016 22:22:17 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1cMj5U-00060c-In for rsgb_lf_group@blacksheep.org; Thu, 29 Dec 2016 22:22:16 +0000 Received: from mail-qk0-x22e.google.com ([2607:f8b0:400d:c09::22e]) by relay1.thorcom.net with esmtps (TLSv1.2:ECDHE-RSA-AES256-GCM-SHA384:256) (Exim 4.87) (envelope-from ) id 1cMj5R-0002Iq-Jx for rsgb_lf_group@blacksheep.org; Thu, 29 Dec 2016 22:22:15 +0000 Received: by mail-qk0-x22e.google.com with SMTP id u25so272923091qki.2 for ; Thu, 29 Dec 2016 14:22:13 -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 :cc; bh=9eOK0n0WVvuilWKzJjmaJ7THT3dgZEzuBzrS51H6nvk=; b=gAvBahJNAmC1YXgwV5HpUPZgT+6eYd0j9LDBebvqozu7NIpZNite1JbeiFje6OlbnQ ily/7sz5qUcahAseKli1699LRyVa5XXsruhtrZe01+64feR9scy4dx/x3IuIGi4fVRVr fJTP0RIy3OAKLgt5twrWVn55fpgjQFfn+tnZAUi9QM0pjqqHldL6O2PV8K9xL0M10wHD /UfIw3fMfJWLydrhI/LTK53CqFyRTyUFFLYdY6PQ8N2y8Wa6k+Dpg5Xdq13aiOXjfOvf Q9pOwoauXSEl/qju2Q1R2lu8Us0JabBY0vRmP5Xm2UPyjxydKs33CoFkI82/GG8QuI/a 2+mA== 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:cc; bh=9eOK0n0WVvuilWKzJjmaJ7THT3dgZEzuBzrS51H6nvk=; b=FC8TuhGmCUjMl2r30QIkMsZy6ox/26jrFMI1EO3B7RhgwZXxw//RZhfbkTLo0UnYAi NinYwqT+L40CqSSFLlBy5+PSfJNxapQqGEFyl/ULuTV4/wsyG7kWw5iddjr3qrIAKj98 8BwGd9vN70I7TuRDvcYttD+KYyoSDL1LxQgoni4j5yFoN6Uql5eqYW/vr3etZUZVQ3sP JO3FdVwUuzXZyca44vtBXUVUs7svrFwvt4g7m/X83u3tJcpMe2MmOJCFMrj2xCAz5LEP yo08vfHoC1Ahw+5Mn02hI0VExcHXFmViIG5ZdIuySVf9lfUVqeuUwv58ivDkEl9keLd+ 7jWA== X-Gm-Message-State: AIkVDXKV/7RjUCwp1gTR3rm4iPV+sl4NGN1wr15oGAsC1vJcG3Rgu41w5u+yIkQhmysxa9pnv1Iwcd8OQ8NBHw== X-Received: by 10.55.142.194 with SMTP id q185mr40788898qkd.82.1483050131781; Thu, 29 Dec 2016 14:22:11 -0800 (PST) MIME-Version: 1.0 Received: by 10.12.181.9 with HTTP; Thu, 29 Dec 2016 14:22:11 -0800 (PST) Received: by 10.12.181.9 with HTTP; Thu, 29 Dec 2016 14:22:11 -0800 (PST) In-Reply-To: <1594c9be913-2ff-27fb8@webprd-m70.mail.aol.com> References: <1594c9be913-2ff-27fb8@webprd-m70.mail.aol.com> From: Riccardo Zoli Date: Thu, 29 Dec 2016 23:22:11 +0100 Message-ID: To: Markus Vester Cc: LF Group X-Scan-Signature: 783e848a630124d13ae6ef06c152f951 Subject: Re: LF: EbNaut beaconing from JN64 Content-Type: multipart/alternative; boundary=94eb2c0854dc49ffa10544d38417 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: 10002 --94eb2c0854dc49ffa10544d38417 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable Hi Markus, LF TU for info, Markus. Sorry, wrong setting of EbNaut-TX prog. TX on 21z, 22z ,23z was not valid (only carrier). The message will be on air from 00z to 07z...sorry again! All the best 73 de IW4DXW Riccardo Il 29/Dic/2016 23:03, "Markus Vester" ha scritto: > > Hi Ric, > > I switched on too late for the 20 UT transmission but tried to decode the > 21 UT one. However this one looks like an unmodulated carrier, producing = an > ******** decode. Perhaps something went wrong with the PSK? Will look aga= in > now after 22 UT. > > Best 73, > Markus > > -----Urspr=C3=BCngliche Mitteilung----- > Von: Riccardo Zoli > An: LF Group > Verschickt: Do, 29 Dez 2016 8:47 pm > Betreff: Re: LF: EbNaut beaconing from JN64 > > > Hi Joe, Markus, Domenico, LF. > > Many thanks for your efforts to try to discover my signal in Joe's > recordings in the past few days. > I'm on air from 20:00z, every :00 min., with a new message on 137485.0006 > Hz, 8K19A, 2 sec., 8 char (1 min pre-carrier). > > All the best > > 73 de IW4DXW Riccardo > Il 28/Dic/2016 21:42, "Markus Vester" ha scritto: > > > PS I have scheduled 5 minute carriers before and after each sequence, so > that might also help finding the signal. > PS Corrected a couple of typos below, regarding soundcard glitches. > > 73, Markus > > -----Urspr=C3=BCngliche Mitteilung----- > Von: Markus Vester > An: rsgb_lf_group > Verschickt: Mi, 28 Dez 2016 8:54 pm > Betreff: Re: LF: EbNaut beaconing from JN64 > > Hi Joe, > > sorry to read the mishap regarding the poor RasPi memory card. Don't worr= y > too much about hitting the "correct" Pilot frequency - it doesn't matter = as > long as we know where it is, or the frequency word actually sent to the > DDS. If you like you might just use the magic number 59055800 ( =3D 0385= 1eb8 > hex) to come back to the old 137499.99925 Hz. > > Glitches seem rare enough not to be a big problem - I reviewed your files > from the other night (Dec 10/11) and found only a single one shortly afte= r > 23 UT. Sometimes leaving the PC alone seems to help, avoiding unnecessary > user interface activity. > > Anyway LF conditions seem to be improving, and my favourite northern > propagation indicaters (Loran-C Korea and Ussurisk) are picking up a bit = of > strength. Thought I might send a bit more EbNaut tonight, using same > parameters as before: > 137490 Hz, 2 sec, 8 char, 8K19A, starting on the hour plus about 0.3 s > soundcard delay. > Still need to think up a message ;-). > > Best 73, > Markus (DF6NM) > > -----Urspr=C3=BCngliche Mitteilung----- > Von: jcraig > An: rsgb_lf_group > Verschickt: Mi, 28 Dez 2016 7:01 pm > Betreff: Re: LF: EbNaut beaconing from JN64 > > Hi Markus, > > Thank-you for your efforts. The pilot was generated using a raspi/ad9851 > but there have been troubles with instability. Bypassing, shielding, etc > over the past few days yeielded no satisfaction and, sadly, a fried pi/SD > card! The arduino still works but the high precision math has to > be done on another machine as work continues on getting a replacement > pilot. > > 73 Joe VO1NA > > PS Stefan's coil is very compact. 0,4 mm wire? Hope it can take the kV! > PPS Paul's article greatly apprectiated. Thanks! > PPPS All the best to all in 2017 > > > > > On Sun, 25 Dec 2016, Markus Vester wrote: > > > Hi Joe, > > > > > > today I found the time to look into your files from Dec 19/20 > (1220xx08.txt etc.). The pilot level is just right now. Assuming an > accurate 10 MHz DDS-clock, the theoretical pilot frequency would be > 137499.999255 Hz, consistent with the -0.8 mHz offset that I had found la= st > time. This allows us to determine the course of your RX center frequency, > which apparently drifted about 10 mHz upwards during that night > (137499.8988 to 137499.9088 Hz). > > > > > > Some of the files (e.g. 0708 and 0608, see png) showed phase jumps, > which are presumably due to occasional short audio dropouts in the > soundcard processing. In principle it should be possible to correct these > glitches a-posteriori but I have not attempted to do so. The 0308, 0408 a= nd > 0508 files looked good so I calculated the expected offsets for Ric's > transmit frequency and attempted decodes. Unfortunately no useful result > appeared yet. > > > > > > LF DX conditions haven't been too good lately. But I'm sure that once > they improve, you will be able to pick up more than one European EbNaut > station. > > > > > > Best 73, > > Markus > > > > --94eb2c0854dc49ffa10544d38417 Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable

Hi Markus, LF

TU for info, Markus. Sorry, wrong setting of EbNaut-TX prog.=
TX on 21z, 22z ,23z was not valid (only carrier). The message will be on ai= r from 00z to 07z...sorry again!

All the best

73 de IW4DXW Riccardo

Il 29/Dic/2016 23:03, "Markus Vester" = <markusvester@aol.com> ha= scritto:

Hi Ric,

I switched=C2=A0on too late for the 20 UT transmissi= on but tried to decode the 21 UT one. However this one looks like an unmodu= lated carrier, producing an ******** decode. Perhaps something=C2=A0went wr= ong with the PSK? Will look again now after 22 UT.

Best 73,
Marku= s

-----Urspr=C3=BCngliche Mitteilung-----
Von: Riccardo Zoli <= ;riccardozoli= 80@gmail.com>
An: LF Group <rsgb_lf_group@blacksheep.org>
Ver= schickt: Do, 29 Dez 2016 8:47 pm
Betreff: Re: LF: EbNaut beaconing from = JN64


Hi Joe, Markus, Domenico, LF.

Many thanks for your efforts to try to discover my signal in= Joe's recordings in the past few days.
I'm on air from 20:00z, every :00 min., with a new message on 137485.00= 06 Hz, 8K19A, 2 sec., 8 char (1 min pre-carrier).

All the best

73 de IW4DXW Riccardo

Il 28/Dic/2016 21:= 42, "Markus Vester" <markusvester@aol.com> h= a scritto:
PS I have scheduled=C2=A05 minute carriers before and after each sequence= , so that might also help finding the signal.
PS Corrected a couple of t= ypos below, regarding=C2=A0soundcard glitches.

73, Markus

---= --Urspr=C3=BCngliche Mitteilung-----
Von: Markus Vester <= markusvester@aol.com>
An: rsgb_lf_group <rs= gb_lf_group@blacksheep.org>
Verschickt: Mi, 28 Dez 2016 8:54 pmBetreff: Re: LF: EbNaut beaconing from JN64

Hi Joe,

sorry to read the mishap regarding the p= oor RasPi=C2=A0memory card. Don't worry too much about hitting the &quo= t;correct" Pilot frequency - it doesn't matter as long as we know = where it is, or=C2=A0the frequency word actually sent to the DDS. If you li= ke=C2=A0you might just=C2=A0use =C2=A0the magic number 59055800 ( =3D 03851= eb8 hex) to come back to the old 137499.99925 Hz.

Glitches seem=C2= =A0rare=C2=A0enough not to be a big problem - I reviewed=C2=A0your files fr= om the other night (Dec 10/11) and found only a single one shortly after 23= =C2=A0UT. Sometimes leaving the PC alone seems to help, avoiding unnecessar= y user interface activity.

Anyway=C2=A0LF conditions seem to be impr= oving, and my favourite northern propagation indicaters (Loran-C Korea and = Ussurisk) are picking up a bit of strength. Thought I=C2=A0might=C2=A0send = a bit more=C2=A0EbNaut tonight, using same parameters as before:=C2=A0
= =C2=A0137490 Hz, 2 sec, 8 char, 8K19A,=C2=A0starting=C2=A0on the=C2=A0hour = plus about 0.3 s soundcard delay.=C2=A0=C2=A0
Still need to think up a m= essage ;-).

Best 73,
Markus (DF6NM)

-----Urspr=C3=BCnglich= e Mitteilung-----
Von: jcraig <jcraig@mun.ca>
An: rsg= b_lf_group <rsgb_lf_group@blacksheep.org>
V= erschickt: Mi, 28 Dez 2016 7:01 pm
Betreff: Re: LF: EbNaut beaconing fro= m JN64

Hi Markus,

Thank-you for your efforts. The pilo= t was generated using a raspi/ad9851
but there have been troubles with i= nstability. Bypassing, shielding, etc
over the past few days yeielded no= satisfaction and, sadly, a fried pi/SD
card! The arduino still works b= ut the high precision math has to
be done on another machine as work con= tinues on getting a replacement
pilot.

73 Joe VO1NA

PS St= efan's coil is very compact. 0,4 mm wire? Hope it can take the kV!PPS Paul's article greatly apprectiated. Thanks!
PPPS All the bes= t to all in 2017




On Sun, 25 Dec 2016, Markus Vester wrot= e:

> Hi Joe,
>
>
> today I found the time to lo= ok into your files from Dec 19/20 (1220xx08.txt etc.). The pilot level is j= ust right now. Assuming an accurate 10 MHz DDS-clock, the theoretical pilot= frequency would be 137499.999255 Hz, consistent with the -0.8 mHz offset t= hat I had found last time. This allows us to determine the course of your R= X center frequency, which apparently drifted about 10 mHz upwards during th= at night (137499.8988 to 137499.9088 Hz).
>
>
> Some of t= he files (e.g. 0708 and 0608, see png) showed phase jumps, which are presum= ably due to occasional short audio dropouts in the soundcard processing. In= principle it should be possible to correct these glitches a-posteriori but= I have not attempted to do so. The 0308, 0408 and 0508 files looked good s= o I calculated the expected offsets for Ric's transmit frequency and at= tempted decodes. Unfortunately no useful result appeared yet.
>
&g= t;
> LF DX conditions haven't been too good lately. But I'm s= ure that once they improve, you will be able to pick up more than one Europ= ean EbNaut station.
>
>
> Best 73,
> Markus
>=
--94eb2c0854dc49ffa10544d38417--