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 x36KoX8m026209 for ; Sat, 6 Apr 2019 22:50:34 +0200 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1hCs6Z-0005VO-KO for rs_out_1@blacksheep.org; Sat, 06 Apr 2019 21:39:59 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1hCs6Y-0005VF-Vf for rsgb_lf_group@blacksheep.org; Sat, 06 Apr 2019 21:39:58 +0100 Received: from mout01.posteo.de ([185.67.36.65]) by relay1.thorcom.net with esmtps (TLSv1.2:ECDHE-RSA-AES256-GCM-SHA384:256) (Exim 4.92) (envelope-from ) id 1hCs6X-00016X-4a for rsgb_lf_group@blacksheep.org; Sat, 06 Apr 2019 21:39:57 +0100 Received: from submission (posteo.de [89.146.220.130]) by mout01.posteo.de (Postfix) with ESMTPS id B476316005E for ; Sat, 6 Apr 2019 22:39:53 +0200 (CEST) X-DKIM-Result: Domain=posteo.de Result=Signature OK DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=posteo.de; s=2017; t=1554583195; bh=r74qCBaS0o8px6FfLjxI7szYOnM/ip/b63XsWN83Xwk=; h=Date:From:To:Subject:From; b=UTd6yNHNFMl54bkkJHL/lCSng6ZaxGxepqmNvQjw4BrQnjpttn5PV1wE6ddUnaAvP 4+4Ad+YKCCC3kKVt05z3kwvvQ/amUDKs2syJI1dLm8HyL6pkNqtzMfF1qhwQhovzUb kmmaA92vdTq7G/VbA/QHd+SYQpXlbVL9TQWtl4EQvUEORaFwY/fj3k1KioZPH/FEft 2V1As6woXNzztQICawWAAzUbl6XM+U//5ap3/ccKFAHUb+/dhCEtc5+jG8/x50xTbj DccSq2HnHUBIjJCsomJCQGS91WrnpZZVEnxk4SeZceXBvP6USTd2LirvqUsrs6PwqQ boDh7LMsulb8A== Received: from customer (localhost [127.0.0.1]) by submission (posteo.de) with ESMTPSA id 44c7pc55Djz6tm8 for ; Sat, 6 Apr 2019 22:39:52 +0200 (CEST) Message-ID: <5CA90E98.2070707@posteo.de> Date: Sat, 06 Apr 2019 22:39:52 +0200 From: DK7FC User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.1; de; rv:1.9.1.8) Gecko/20100227 Thunderbird/3.0.3 MIME-Version: 1.0 To: rsgb_lf_group@blacksheep.org References: <1652663722.1033558.1554575549616.ref@mail.yahoo.com> <1652663722.1033558.1554575549616@mail.yahoo.com> In-Reply-To: <1652663722.1033558.1554575549616@mail.yahoo.com> X-Spam-Score: -2.3 (--) 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: Hello Markus, ULF, I'm now sitting in my car, TXing in the forest. It is very silent here. I can hear a faint 'crk' in the FETs when the phase toggles :-) Getting 2.44 A now on the 1130mground loop, 487 W TX power (not [...] Content analysis details: (-2.3 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- -2.3 RCVD_IN_DNSWL_MED RBL: Sender listed at http://www.dnswl.org/, medium trust [185.67.36.65 listed in list.dnswl.org] -0.0 SPF_PASS SPF: sender matches SPF record 0.0 HTML_MESSAGE BODY: HTML included in message X-Scan-Signature: 16a6530e4735ccb856cf9bc7c6cb9773 Subject: ULF: EbNaut message transmitted from ground loop Content-Type: multipart/alternative; boundary="------------050803080208070203010600" X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.8 required=5.0 tests=HTML_30_40,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 This is a multi-part message in MIME format. --------------050803080208070203010600 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit Hello Markus, ULF, I'm now sitting in my car, TXing in the forest. It is very silent here. I can hear a faint 'crk' in the FETs when the phase toggles :-) Getting 2.44 A now on the 1130mground loop, 487 W TX power (not as much as it could be for the planned TX time though). Now, message parameters: *f = 2970.1 Hz Start time: 06.APR.2019 20:25:00.3 UTC Symbol period: 6 s Characters: 7 CRC bits: 16 Coding 16K21A Antenna current: 2.4 A Duration: 02:04:48 [hh:mm:ss] *Reports welcome :-) 73, Stefan ** Am 06.04.2019 20:32, schrieb Markus Vester: > Hi Stefan, we'd like to look from DL0AO. Could you advise on time, > exact frequency and message parameters? 73, Markus > > > -----Ursprüngliche Mitteilung----- > Von: DK7FC > An: rsgb_lf_group > Verschickt: Sa, 6. Apr. 2019 14:05 > Betreff: Re: VLF: Ground loop improvements and test carrier... > > Hi Paul, > > Thanks for your measurements. > Good idea to calculate B relative to I. > Would be interesting to see how this varies with frequency. > > BTW i did now actually order one of those: > https://www.dhgate.com/product/60-v-60ah-lifepo4-60-v-60ah-lifepo4-de-litio/445395613.html#s2-21-1b;searl|3512104843 > > Wonder how long it takes to arrive here, and even more, if it actually > has 60 Ah at 60V, i.e. 3.6 kWh!! If so, i will order 3 more of them!... > > Considering the 13 dB advantage of night/day in recent transmissions > with that ground loop antenna, at least on 8270 Hz, I'd like to try a > night transmission tonite, at 2970 Hz, trying a 7 character EbNaut > message. So far we have no message decode at ULF between DL and UK. I'd > like to reach that mile stone and think the ERP should be fine now, but > hopefully the QRN stays low enough. > > Everyone else is invited to try as well!!! > > 73, Stefan > > > > > Am 05.04.2019 19:06, schrieb Paul Nicholson: > > > > Stefan wrote: > > > > > These were the transmissions today (+ some more parameters): > > > > Received at 5170.1 Hz, > > > > 2019-04-05_10:39,+35m: 1130m, I=2,39 A, 0.63 fT S/N -5.07 dB/1Hz > > 2019-04-05_11:19,+51m: 900m, I=2,92 A, 0.63 fT S/N -4.92 dB/1Hz > > > > Yes, the same fT in both tests. Then we have > > > > 900m > > ---- > > 2.74 A -> 0.50 fT, 0.182 fT/A > > 2.92 A -> 0.63 fT, 0.216 fT/A > > > > 1130m > > ----- > > 2.12 A -> 0.50 fT, 0.236 fT/A > > 2.39 A -> 0.63 fT, 0.264 fT/A > > > > > > Nothing received at 970.1 Hz. > > > > -- > > Paul Nicholson > > -- > > > --------------050803080208070203010600 Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: 8bit Hello Markus, ULF,

I'm now sitting in my car, TXing in the forest. It is very silent here. I can hear a faint 'crk' in the FETs when the phase toggles :-)
Getting 2.44 A now on the 1130mground loop, 487 W TX power (not as much as it could be for the planned TX time though).

Now, message parameters:

f = 2970.1 Hz
Start time: 06.APR.2019  20:25:00.3 UTC
Symbol period: 6 s
Characters: 7
CRC bits: 16
Coding 16K21A
Antenna current: 2.4 A
Duration: 02:04:48 [hh:mm:ss]

Reports welcome :-)

73, Stefan



Am 06.04.2019 20:32, schrieb Markus Vester:
Hi Stefan, we'd like to look from DL0AO. Could you advise on time, exact frequency and message parameters?  73, Markus


-----Ursprüngliche Mitteilung-----
Von: DK7FC <selberdenken@posteo.de>
An: rsgb_lf_group <rsgb_lf_group@blacksheep.org>
Verschickt: Sa, 6. Apr. 2019 14:05
Betreff: Re: VLF: Ground loop improvements and test carrier...

Hi Paul,

Thanks for your measurements.
Good idea to calculate B relative to I.
Would be interesting to see how this varies with frequency.

BTW i did now actually order one of those:
https://www.dhgate.com/product/60-v-60ah-lifepo4-60-v-60ah-lifepo4-de-litio/445395613.html#s2-21-1b;searl|3512104843
Wonder how long it takes to arrive here, and even more, if it actually
has 60 Ah at 60V, i.e. 3.6 kWh!! If so, i will order 3 more of them!...

Considering the 13 dB advantage of night/day in recent transmissions
with that ground loop antenna, at least on 8270 Hz, I'd like to try a
night transmission tonite, at 2970 Hz, trying a 7 character EbNaut
message. So far we have no message decode at ULF between DL and UK. I'd
like to reach that mile stone and think the ERP should be fine now, but
hopefully the QRN stays low enough.

Everyone else is invited to try as well!!!

73, Stefan




Am 05.04.2019 19:06, schrieb Paul Nicholson:
>
> Stefan wrote:
>
> > These were the transmissions today (+ some more parameters):
>
> Received at 5170.1 Hz,
>
>  2019-04-05_10:39,+35m: 1130m, I=2,39 A, 0.63 fT S/N -5.07 dB/1Hz
>  2019-04-05_11:19,+51m: 900m, I=2,92 A, 0.63 fT S/N -4.92 dB/1Hz
>
> Yes, the same fT in both tests.  Then we have
>
> 900m
> ----
>  2.74 A -> 0.50 fT,  0.182 fT/A
>  2.92 A -> 0.63 fT,  0.216 fT/A
>
> 1130m
> -----
>  2.12 A -> 0.50 fT,  0.236 fT/A
>  2.39 A -> 0.63 fT,  0.264 fT/A
>
>
> Nothing received at 970.1 Hz.
>
> --
> Paul Nicholson
> --
>

--------------050803080208070203010600--