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 x556JluK030651 for ; Wed, 5 Jun 2019 08:19:48 +0200 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1hYP2I-0007Re-VL for rs_out_1@blacksheep.org; Wed, 05 Jun 2019 07:04:34 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1hYP07-0007RP-EM for rsgb_lf_group@blacksheep.org; Wed, 05 Jun 2019 07:02:19 +0100 Received: from mout02.posteo.de ([185.67.36.66]) by relay1.thorcom.net with esmtps (TLSv1.2:DHE-RSA-AES256-GCM-SHA384:256) (Exim 4.92) (envelope-from ) id 1hYP05-0001Vm-S4 for rsgb_lf_group@blacksheep.org; Wed, 05 Jun 2019 07:02:18 +0100 Received: from submission (posteo.de [89.146.220.130]) by mout02.posteo.de (Postfix) with ESMTPS id A41F02400E6 for ; Wed, 5 Jun 2019 08:02:16 +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=1559714536; bh=0YJajLHYactLLRcEbio28OyXxruUch5HxNrIxyikZaI=; h=Date:From:To:Subject:From; b=VbT49QvtTq/GERA+A2MA7ujwvy75PPM0Dx+TobGpIkYSQEULURtkK7zlgW8IZcEb6 RIpBpGcykM+XIpL92dvWPyEG7ZS/L3xu8AVBXQU5sByZZ/5Yc1fdu7gaxriBzwYOlq KqrRKQydDLbeooojK8wRHOqo23hsusptx3YrOUNQuHV30Lp4ZP/TjCzvZ7M1xbIOl+ tlkGGXQT486B9z8PiBXcOMPU1gv6rzeUU0tshq+zDOL38GMg5076tRGXHh9viNqa3m M0a/yfM+Fw0aWEK5Q9gDdBnkw4o7+g1oiMOF6tVHxQt2q3NQPC+XNUcMD8oDysde64 MaKR95YtY5WSA== Received: from customer (localhost [127.0.0.1]) by submission (posteo.de) with ESMTPSA id 45JdVJ12CDz9rxB for ; Wed, 5 Jun 2019 08:02:15 +0200 (CEST) Message-ID: <5CF75AE7.8080103@posteo.de> Date: Wed, 05 Jun 2019 08:02:15 +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: <6DB8451D7F3D3947A5918808A59621EA31596319@servigilant.vigilant.local>,<5CF283CC.9010701@posteo.de> <6DB8451D7F3D3947A5918808A59621EA5BEB7DAC@servigilant.vigilant.local> <5CF57C41.7020008@posteo.de> <6DB8451D7F3D3947A5918808A59621EA5BEB9071@servigilant.vigilant.local> In-Reply-To: <6DB8451D7F3D3947A5918808A59621EA5BEB9071@servigilant.vigilant.local> X-Spam-Score: -2.5 (--) 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 @@CONTACT_ADDRESS@@ for details. Content preview: Hi Luis, > Moving the grabber to a quiter place is an "old" plan. There are some > options but all of them requiere dedication > > and negotiation. in other words .... time! > I know :-) Everything needs dedic [...] Content analysis details: (-2.5 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 -0.1 DKIM_VALID_EF Message has a valid DKIM or DK signature from envelope-from domain -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from author's domain 0.0 DKIMWL_WL_MED DKIMwl.org - Whitelisted Medium sender X-Scan-Signature: 4998b3eda037fec4e885bebc9a2db934 Subject: Re: LF: Re: EbNaut considerations for tomorrow... Content-Type: multipart/alternative; boundary="------------010700060505060209060104" X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: * X-Spam-Status: No, hits=1.4 required=5.0 tests=HTML_30_40,HTML_MESSAGE, HTML_TITLE_EMPTY 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. --------------010700060505060209060104 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Hi Luis, > Moving the grabber to a quiter place is an "old" plan. There are some > options but all of them requiere dedication > > and negotiation. in other words .... time! > I know :-) Everything needs dedication. > > Using the transmitting antenna for Rx in VLF may be the quick option > Don't expect better results from a larger antenna at the same location. It may be an option to build an active symmetrical antenna, as recently described by DF9RB, and lift this as high as possible out of the 'cloud' of QRM which surrounds the building. But this is a new experimental project which, again, needs time and dedication :-) And it will never give the same good results as you can get from a quiet location. I would suggest to use your existing VLF RX antenna and try it out on the alternative location, using a notebook running SpecLab. Just for a few minutes. Use a fast running spectrogram, 500 ms/pixel covering 0...24 kHz. And then take a screen capture... > I'm looking for 11.907Hz Alpha using the 90m vertical tuned for LF. I > can get fainth traces with the MiniWhip > > from 06 to 10 UTC which can be seen in my grabber. Let's see if there > is something detected with the vertical > > despite the elevators QRM > The Alphas are OFF since some months, except some temporary periods taking a few hours, sometimes with reduced power or not all transmitters active. ZEVS is back with good availability since some time again but it is more challenging to receive it at all. > I'm using the Perseur for that. The PC soundcard would be better at > that frequency. Must make an interface > > T-O-D-A-Y ;-) > That was yesterday. And did you? :-) 73, Stefan > --------------010700060505060209060104 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Hi Luis,

Moving the grabber to a quiter place is an “old” plan. There are some options but all of them requiere dedication

and negotiation. in other words …. time!

I know :-) Everything needs dedication.

Using the transmitting antenna for Rx in VLF may be the quick option

Don't expect better results from a larger antenna at the same location.
It may be an option to build an active symmetrical antenna, as recently described by DF9RB, and lift this as high as possible out of the 'cloud' of QRM which surrounds the building. But this is a new experimental project which, again, needs time and dedication :-) And it will never give the same good results as you can get from a quiet location.

I would suggest to use your existing VLF RX antenna and try it out on the alternative location, using a notebook running SpecLab. Just for a few minutes. Use a fast running spectrogram, 500 ms/pixel covering 0...24 kHz. And then take a screen capture...

I’m looking for 11.907Hz Alpha using the 90m vertical tuned for LF. I can get fainth traces with the MiniWhip

from 06 to 10 UTC which can be seen in my grabber. Let’s see if there is something detected with the vertical

despite the elevators QRM

The Alphas are OFF since some months, except some temporary periods taking a few hours, sometimes with reduced power or not all transmitters active.
ZEVS is back with good availability since some time again but it is more challenging to receive it at all.

I’m using the Perseur for that. The PC soundcard would be better at that frequency. Must make an interface

T-O-D-A-Y  ;-)

That was yesterday. And did you? :-)

73, Stefan
--------------010700060505060209060104--