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 v1BKhxNU019790 for ; Sat, 11 Feb 2017 21:44:00 +0100 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1cceKv-0004Rk-Aa for rs_out_1@blacksheep.org; Sat, 11 Feb 2017 20:32:01 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1cceKu-0004Rb-Vi for rsgb_lf_group@blacksheep.org; Sat, 11 Feb 2017 20:32:00 +0000 Received: from omr-m008e.mx.aol.com ([204.29.186.7]) by relay1.thorcom.net with esmtps (TLSv1:DHE-RSA-AES256-SHA:256) (Exim 4.87) (envelope-from ) id 1cceKs-0002Zz-0X for rsgb_lf_group@blacksheep.org; Sat, 11 Feb 2017 20:31:59 +0000 Received: from mtaomg-mbd02.mx.aol.com (mtaomg-mbd02.mx.aol.com [172.26.252.16]) by omr-m008e.mx.aol.com (Outbound Mail Relay) with ESMTP id E2014380008C for ; Sat, 11 Feb 2017 15:31:55 -0500 (EST) Received: from core-acb07d.mail.aol.com (core-acb07.mail.aol.com [172.27.24.7]) by mtaomg-mbd02.mx.aol.com (OMAG/Core Interface) with ESMTP id 863B038000081 for ; Sat, 11 Feb 2017 15:31:55 -0500 (EST) Received: from 188.192.95.60 by webprd-m99.mail.aol.com (10.74.71.98) with HTTP (WebMailUI); Sat, 11 Feb 2017 15:31:55 -0500 Date: Sat, 11 Feb 2017 15:31:55 -0500 From: Markus Vester To: rsgb_lf_group@blacksheep.org Message-Id: <15a2edffc07-2570-11f0@webprd-m99.mail.aol.com> In-Reply-To: <15a2d3b96ee-34ef-4a9@webprd-a69.mail.aol.com> MIME-Version: 1.0 X-MB-Message-Source: WebUI X-MB-Message-Type: User X-Mailer: JAS STD X-Originating-IP: [188.192.95.60] x-aol-global-disposition: G DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=mx.aol.com; s=20150623; t=1486845115; bh=cElMOZqPj+/Sx+tuS5jrVN/8Yr/6POK+gjLpqxpK+ds=; h=From:To:Subject:Message-Id:Date:MIME-Version:Content-Type; b=5x9J8lrFytNgbe/9ykXU7wdsMeaZClYO1WXSNC5IBxaB74EKTfPrKY0vhYijSAWqB jSc/yuXLUyYCWgxdrQhjDiSjyIEufSuqc+uS9D7YAE5LUqMFpqbe0Is6ZRU/P1oGtp NaXVI05Gb7O/m5dVH2y6rYcdgLes62AAtiNB6fHA= x-aol-sid: 3039ac1afc10589f74bb6e42 X-Scan-Signature: c8ff00257edaad8e124ab9389da9609a Subject: Re: VLF: Weekend carrier on 8270.005 Hz... Content-Type: multipart/alternative; boundary="----=_Part_5336_2096113625.1486845115397" 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: RO X-Status: X-Keywords: X-UID: 10560 ------=_Part_5336_2096113625.1486845115397 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable My 8270.0025 carrier from Nuremberg was on for seven hours until 20:30 UT. = Three traces are now visible in the Todmorden spectrogram. 73, Markus -----Urspr=C3=BCngliche Mitteilung-----=20 Von: Markus Vester An: rsgb_lf_group Verschickt: Sa, 11. Feb 2017 13:52 Betreff: Re: VLF: Weekend carrier on 8270.005 Hz... I will try a short EbNaut sequence first Frequency 8270.100 Hz, 5 characters 8K19A, 3 second symbols, start 17-02-11 13:00:00, end 13:25:36 and later send some more carrier on 8270.0025. Best 73, Markus (DF6NM) PS: On Stefan's grabber, there was a stable trace on 8270.0015 last night. = Seems to be the same source as the slightly bent traces whiche were seen be= fore in 424 uHz. A new station in the process of getting getting on air? -----Urspr=C3=BCngliche Mitteilung-----=20 Von: DK7FC An: rsgb_lf_group Verschickt: Sa, 11. Feb 2017 13:27 Betreff: VLF: Weekend carrier on 8270.005 Hz... Hi VLF, I'm running another carrier on 8270.005 Hz. The antenna current is 700 mA, that's 100% of the capability of that=20 coil. That's about 29 kV across the antenna wire, about 75% of the=20 voltage limit. The linear mode PA is now consuming 10.6 A at 25 V, i.e. 265W. I=20 estimate the PA losses are 65W, i.e. about 200W for the coil and ground=20 losses. These are 400 Ohm then. The loses of the warm coil are about 300=20 Ohm. So the ground losses are in a range of 100 Ohm, quite low! Today i have covered the coil with a trash bag, just to be able to=20 continue transmitting during rain. The upwarming of the coil under this=20 bag causes an increase of the resistance which leads to a significant=20 increase of the needed TX power to hold the 700 mA level... Markus, Uwe, do you want to join? It would be nice to see 3 peaks from=20 us showing on one of Paul's nice looking spectrum peaks! Furthermore,=20 RN3AUS is running spectrograms in 47 uHz and 180 uHz. These spectrograms=20 are now tracked by PPS+NMEA, whereas it was locked to GBZ/19.58 kHz=20 during the first detection of my signal. If all works well i intend to run the carrier until monday morning. 73, Stefan PS: There are a number of further 'newcomers' trying to detect a signal=20 on 8270 Hz these days, so its worth to be on the air... ------=_Part_5336_2096113625.1486845115397 Content-Type: text/html; charset=utf-8 Content-Transfer-Encoding: quoted-printable
My 8270.0025 carrier from Nuremberg was on for seven hou= rs until 20:30 UT. Three traces are now visible in the Todmorden spect= rogram.

73, Markus


-----Urspr=C3=BCngliche Mitteilung----= -
Von: Markus Vester <markusvester@aol.com>
An: rsgb_lf_group = <rsgb_lf_group@blacksheep.org>
Verschickt: Sa, 11. Feb 2017 13:52<= br>Betreff: Re: VLF: Weekend carrier on 8270.005 Hz...

I will try a short E= bNaut sequence first

Frequency 8270.100 Hz,
5 characters 8K19A,3 second symbols,
start 17-02-11 13:00:00, end 13:25:36

an= d later send some more carrier on 8270.0025.

Best 73,
Markus= (DF6NM)

PS: On Stefan's grabber, there was a stable trace on 8270.0= 015 last night. Seems to be the same source as the slightly bent traces whi= che were seen before in 424 uHz. A new station in the process of getti= ng getting on air?



-----Urspr=C3=BCngliche Mitteilung----- <= br>Von: DK7FC <selberdenken@po= steo.de>
An: rsgb_lf_group <rsgb_lf_group@blacksheep.org>
Verschickt: Sa, 11. F= eb 2017 13:27
Betreff: VLF: Weekend carrier on 8270.005 Hz...

Hi VLF,

I'm running another carrier on 8270.005 Hz.

The an= tenna current is 700 mA, that's 100% of the capability of that
coil. Th= at's about 29 kV across the antenna wire, about 75% of the
voltage limi= t.
The linear mode PA is now consuming 10.6 A at 25 V, i.e. 265W. I
= estimate the PA losses are 65W, i.e. about 200W for the coil and ground losses. These are 400 Ohm then. The loses of the warm coil are about 300 <= br>Ohm. So the ground losses are in a range of 100 Ohm, quite low!
Today= i have covered the coil with a trash bag, just to be able to
continue = transmitting during rain. The upwarming of the coil under this
bag caus= es an increase of the resistance which leads to a significant
increase = of the needed TX power to hold the 700 mA level...

Markus, Uwe, do y= ou want to join? It would be nice to see 3 peaks from
us showing on one= of Paul's nice looking spectrum peaks! Furthermore,
RN3AUS is running = spectrograms in 47 uHz and 180 uHz. These spectrograms
are now tracked = by PPS+NMEA, whereas it was locked to GBZ/19.58 kHz
during the first de= tection of my signal.

If all works well i intend to run the carrier = until monday morning.

73, Stefan

PS: There are a number of fu= rther 'newcomers' trying to detect a signal
on 8270 Hz these days, so i= ts worth to be on the air...

------=_Part_5336_2096113625.1486845115397--