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 x3F8i6Zb018416 for ; Mon, 15 Apr 2019 10:44:07 +0200 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1hFwz7-00082m-5W for rs_out_1@blacksheep.org; Mon, 15 Apr 2019 09:29:01 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1hFwxY-00082d-8k for rsgb_lf_group@blacksheep.org; Mon, 15 Apr 2019 09:27:24 +0100 Received: from mout02.posteo.de ([185.67.36.66]) by relay1.thorcom.net with esmtps (TLSv1.2:ECDHE-RSA-AES256-GCM-SHA384:256) (Exim 4.92) (envelope-from ) id 1hFwxT-00060P-5X for rsgb_lf_group@blacksheep.org; Mon, 15 Apr 2019 09:27:20 +0100 Received: from submission (posteo.de [89.146.220.130]) by mout02.posteo.de (Postfix) with ESMTPS id EA80124013B for ; Mon, 15 Apr 2019 10:27:12 +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=1555316833; bh=wQDp7+7oMOMBATdtsByu/D9erkt9lUXU8yKmJWTF8c8=; h=Date:From:To:Subject:From; b=MKMIrXJ0Q5MG7is8u2jkN3Ir9tUD921uBD9xJBi2R5YH7jofb/mNvBfqTmj7FCN3b /zFhVrZlin42r9WUZPq2wtmcTJxZG8nkXk4BJdIroWsBlET7Ja3syq7xCRNWAWMCEK v8z1c5znyqXnZUSuqrYDJEMHMl+piUXVRCybDZQzv2iZNV5tf7vFP1iNXP0tltlUor RC7Q4gic2qtMdb5vSJD8YO6mZXo9vqJ/igh5iGF0tKsItyvKGiSiH7aUKZuGYn3FDe 9TNH0b9WIpHks1V963NUG0xgIwPpyA2zScAbYGFplrDrqW5PuLObY3AypMpe3Af8gL UINlAFoeBkvjw== Received: from customer (localhost [127.0.0.1]) by submission (posteo.de) with ESMTPSA id 44jM6l4yS1z9rxm for ; Mon, 15 Apr 2019 10:26:55 +0200 (CEST) Message-ID: <5CB4404E.1070405@posteo.de> Date: Mon, 15 Apr 2019 10:26:54 +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: <1115219056.3583883.1555284806139.ref@mail.yahoo.com> <1115219056.3583883.1555284806139@mail.yahoo.com> In-Reply-To: <1115219056.3583883.1555284806139@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, Very well. Thanks for your decodes and for sharing the night :-) Do you have an idea why the E-W cardioid result is worse than from the E field alone? Which carrier S/N do you get from the E field? I' [...] 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 [185.67.36.66 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: 3d5b8cd6516ff44ac46de53952029be0 Subject: Re: ULF: Ground loop night transmission 3.0 Content-Type: multipart/alternative; boundary="------------040105000808000508080205" X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.5 required=5.0 tests=HTML_20_30,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. --------------040105000808000508080205 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit Hello Markus, ULF, Very well. Thanks for your decodes and for sharing the night :-) Do you have an idea why the E-W cardioid result is worse than from the E field alone? Which carrier S/N do you get from the E field? I'm getting carrier S/N: 40.62 dB in 128.6 uHz, 1.71 dB in 1Hz The difference of our carrier Eb/N0 is 16.3 dB. But as Paul mentioned, camparing carrier S/N may be more accurate in that spectrum range. It could be interesting to compare the SNR difference between our locations over some frequencies. If that value is reasonable constant, in the far field, then we could estimate what we can expect at 970 Hz... My results from all 3 antennas are still looking good at that frequency: E field: carrier S/N: 40.62 dB in 128.6 uHz N-S loop: carrier S/N: 28.38 dB in 128.6 uHz E-W loop: carrier S/N: 30.47 dB in 128.6 uHz 73, Stefan Am 15.04.2019 01:33, schrieb Markus Vester: > Hi Stefan, > > DL0AO H-field (E-W): Eb/N0 = 2.5 dB(car), 0.7 dB(sym), > DL0AO E-Field: Eb/N0 = 12.0 dB(car), 10.9 dB (sym). > > Our file ended a couple of minutes early with the last 12 symbols > missing, causing a slightly high symbol error reading. > > 73 and good night, > Markus (DF6NM) > > > -----Ursprüngliche Mitteilung----- > Von: DK7FC > An: rsgb_lf_group ; Renato Romero > > Verschickt: So, 14. Apr. 2019 23:13 > Betreff: Re: ULF: Ground loop night transmission 3.0 > > Hello ULF friends, > > Now i'm sitting in the car again in the deep forest. It is silent > (outside!) and the sky is clear. The TX and EbNaut message is now running: > > *f = 2470.1 Hz > Start time: 14.APR.2019 21:00:00.3 UTC > Symbol period: 9 s > Characters: 3 > CRC bits: **16 > Coding 16K21A > Antenna current: 2.5 A > Duration: 02:09:36 [hh:mm:ss] > > * TX power at the beginning of the transmission is 492 W this time. > * > * 73, Stefan > > > > Am 14.04.2019 14:41, schrieb DK7FC: > Hello Dreamers, > > Today it feels right again, i'd like to have another exciting adventure... > After the recent successes at 2970 Hz, maybe it is possible to get > something through at 2470 Hz? That's the 121 km band. So far, thge > distance record at this frequency is over to DL4YHF, QRB ~ 313 km. > > I'd like to try the following: > > *f = 2470.1 Hz > Start time: 14.APR.2019 ab:cd:00.3 UTC > Symbol period: 9 s > Characters: 3 > CRC bits: **16 > Coding 16K21A > Antenna current: 2.e A > Duration: 02:09:36 [hh:mm:ss]* > > More details regarding start time and antenna current will follow > after the transmission has started. > > Reports requested / welcome :-) > > 73, Stefan --------------040105000808000508080205 Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: 8bit Hello Markus, ULF,

Very well. Thanks for your decodes and for sharing the night :-)
Do you have an idea why the E-W cardioid result is worse than from the E field alone?
Which carrier S/N do you get from the E field? I'm getting carrier S/N: 40.62 dB in 128.6 uHz, 1.71 dB in 1Hz
The difference of our carrier Eb/N0 is 16.3 dB. But as Paul mentioned, camparing carrier S/N may be more accurate in that spectrum range.
It could be interesting to compare the SNR difference between our locations over some frequencies. If that value is reasonable constant, in the far field, then we could estimate what we can expect at 970 Hz...
My results from all 3 antennas are still looking good at that frequency:
E field: carrier S/N: 40.62 dB in 128.6 uHz
N-S loop: carrier S/N: 28.38 dB in 128.6 uHz
E-W loop: carrier S/N: 30.47 dB in 128.6 uHz

73, Stefan



Am 15.04.2019 01:33, schrieb Markus Vester:
Hi Stefan,

DL0AO H-field (E-W): Eb/N0 = 2.5 dB(car), 0.7 dB(sym),
DL0AO E-Field: Eb/N0 = 12.0 dB(car), 10.9 dB (sym). 

Our file ended a couple of minutes early with the last 12 symbols missing, causing a slightly high symbol error reading.

73 and good night,
Markus (DF6NM)


-----Ursprüngliche Mitteilung-----
Von: DK7FC <selberdenken@posteo.de>
An: rsgb_lf_group <rsgb_lf_group@blacksheep.org>; Renato Romero <contact@vlf.it>
Verschickt: So, 14. Apr. 2019 23:13
Betreff: Re: ULF: Ground loop night transmission 3.0

Hello ULF friends,

Now i'm sitting in the car again in the deep forest. It is silent (outside!) and the sky is clear. The TX and EbNaut message is now running:

f = 2470.1 Hz
Start time: 14.APR.2019  21:00:00.3 UTC
Symbol period: 9 s
Characters: 3
CRC bits: 16
Coding 16K21A
Antenna current: 2.5 A
Duration: 02:09:36 [hh:mm:ss]

 TX power at the beginning of the transmission is 492 W this time.

73, Stefan



Am 14.04.2019 14:41, schrieb DK7FC:
Hello Dreamers,

Today it feels right again, i'd like to have another exciting adventure...
After the recent successes at 2970 Hz, maybe it is possible to get something through at 2470 Hz? That's the 121 km band. So far, thge distance record at this frequency is over to DL4YHF, QRB ~ 313 km.

I'd like to try the following:

f = 2470.1 Hz
Start time: 14.APR.2019  ab:cd:00.3 UTC
Symbol period: 9 s
Characters: 3
CRC bits: 16
Coding 16K21A
Antenna current: 2.e A
Duration: 02:09:36 [hh:mm:ss]

More details regarding start time and antenna current will follow after the transmission has started.

Reports requested / welcome :-)

73, Stefan
--------------040105000808000508080205--