Return-Path: Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by mtain-dg02.r1000.mx.aol.com (Internet Inbound) with ESMTP id 805D8380000BF; Wed, 18 Jul 2012 19:58:34 -0400 (EDT) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1Sre7h-0007DZ-El for rs_out_1@blacksheep.org; Thu, 19 Jul 2012 00:57:41 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1Sre7g-0007DQ-NC for rsgb_lf_group@blacksheep.org; Thu, 19 Jul 2012 00:57:40 +0100 Received: from relay.uni-heidelberg.de ([129.206.100.212]) by relay1.thorcom.net with esmtps (TLSv1:AES256-SHA:256) (Exim 4.77) (envelope-from ) id 1Sre7e-0006E0-Gk for rsgb_lf_group@blacksheep.org; Thu, 19 Jul 2012 00:57:39 +0100 Received: from freitag.iup.uni-heidelberg.de (freitag.iup.uni-heidelberg.de [129.206.29.204]) by relay.uni-heidelberg.de (8.14.1/8.14.1) with ESMTP id q6INvbBB006763 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO) for ; Thu, 19 Jul 2012 01:57:37 +0200 Received: from [129.206.22.206] (pc206.iup.uni-heidelberg.de [129.206.22.206]) by freitag.iup.uni-heidelberg.de (8.12.11.20060308/8.11.2) with ESMTP id q6INvaHv003866 for ; Thu, 19 Jul 2012 01:57:36 +0200 Message-ID: <50074CEA.1050505@iup.uni-heidelberg.de> Date: Thu, 19 Jul 2012 01:55:22 +0200 From: =?ISO-8859-1?Q?Stefan_Sch=E4fer?= 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: <002701cd6527$d5a7b440$6d01a8c0@DELL4> <001701cd653f$2b5b4840$8d01a8c0@JAYDELL> In-Reply-To: <001701cd653f$2b5b4840$8d01a8c0@JAYDELL> X-Spam-Score: -0.7 (/) X-Spam-Report: Spam detection software, running on the system "relay1.thorcom.net", has identified this incoming email as possible spam. The original message has been attached to this so you can view it (if it isn't spam) or label similar future email. If you have any questions, see the administrator of that system for details. Content preview: Hi Jay, Interesting, thanks for the info!! Yes and that could be a real alternative for those with a small garden and a stressing XYL. The wire for the dipole can be quite small and fits into a backpack. Then its a question of the dependency of the antenna efficiency as a function of the ground conductivity. This will be one of the interesting results! 10m above ground is not much for a 630m band dipole but if the difference to 2m above the ground is just a few dB, one can easily through out the wire during taking a walk and can do some MF /p operation, without a kite, without the need for a free field, without a tower, without a good earth (connection)... Many advantages! Maybe... [...] Content analysis details: (-0.7 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- -0.7 RCVD_IN_DNSWL_LOW RBL: Sender listed at http://www.dnswl.org/, low trust [129.206.100.212 listed in list.dnswl.org] -0.0 T_RP_MATCHES_RCVD Envelope sender domain matches handover relay domain 0.0 HTML_MESSAGE BODY: HTML included in message X-Scan-Signature: 350b42a0642244046701ed1a68bf48aa Subject: Re: LF: 630 meter full size dipole Content-Type: multipart/alternative; boundary="------------080909060904000207020403" 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 x-aol-global-disposition: G X-AOL-SCOLL-SCORE: 0:2:435480576:93952408 X-AOL-SCOLL-URL_COUNT: 0 x-aol-sid: 3039ac1d410a50074da96c14 X-AOL-IP: 195.171.43.25 X-AOL-SPF: domain : blacksheep.org SPF : none This is a multi-part message in MIME format. --------------080909060904000207020403 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: quoted-printable X-MIME-Autoconverted: from 8bit to quoted-printable by relay.uni-heidelberg.de id q6INvbBB006763 Hi Jay, Interesting, thanks for the info!! Yes and that could be a real=20 alternative for those with a small garden and a stressing XYL. The wire=20 for the dipole can be quite small and fits into a backpack. Then its a question of the dependency of the antenna efficiency as a=20 function of the ground conductivity. This will be one of the interesting=20 results! 10m above ground is not much for a 630m band dipole but if the=20 difference to 2m above the ground is just a few dB, one can easily=20 through out the wire during taking a walk and can do some MF /p=20 operation, without a kite, without the need for a free field, without a=20 tower, without a good earth (connection)... Many advantages! Maybe... BTW i have also modified (extended) the range of my MFJ 259B HF antenna=20 analyzer to cover MF (313...658 kHz) and LF (103...209 kHz). This=20 modification is done _very_ easy! I'm not sure how accurate the=20 measurements are in that range but maybe it gives me some ideas "where i=20 am". Looking forward to that test! 73, Stefan/DK7FC > Stefan > This may be of interest for your next exploit ... > Looking back in my 500 kHz log, I see that on 1/3/2010 I had a CW QSO=20 > with WD2XSH/35 in South Dakota ... who was running a full size 600=20 > meter dipole. As I recall his antenna was relatively low at 30 or=20 > 40' above ground and he was running only 50 or 100 watts. His signal=20 > was weak but solid copy over the few nights that he was active.=20 > Distance was 1210 mi / 1950kM. Believe his antenna was 'out in the=20 > open' as he apparently owns a good sized farm. > Jay W1VD WD2XNS WE2XGR/2 > ----- Original Message ----- > > *From:* Stefan Sch=E4fer > *To:* rsgb_lf_group@blacksheep.org > > *Sent:* Wednesday, July 18, 2012 3:50 PM > *Subject:* Re: LF: increase in Opera 136 WANTED 136 QRO test > stations ! > > Hi Graham, > > Well, as often announced i want to do some tests with a full size > dipole for 630m. Maybe the signals will be very weak. QRSS is not > usual on MF and so Opera or WSPR will be useful for the tests. > However i would have no internet access during the tests... > > BTW which information is contained in one OP message? Just the > callsign or the callsign+locator? > > > 73, Stefan > >> Thanks Stefan >> Main thing is , that all stations have the same mode set , >> but if you are using the windows software , the internet=20 >> beacon will show the mode , OP8 or OP32 ... this is=20 >> where the PIC based systems have a problem. but if the=20 >> tx is remote , its possible to simply run Op on a web >> linked PC to beacon via the web .. >> Monitors can run X2 Opera , one set to OP8 , the other=20 >> OP32 , with some CPU overhead , but not a problem on a 'new'=20 >> pc better , just the one session. >> If you have a day selected, then can post to the user >> groups, to ensure the maximum number of Rx stations >> 73-G. > --------------080909060904000207020403 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Hi Jay,

Interesting, thanks for the info!! Yes and that could be a real alternative for those with a small garden and a stressing XYL. The wire for the dipole can be quite small and fits into a backpack.
Then its a question of the dependency of the antenna efficiency as a function of the ground conductivity. This will be one of the interesting results!
10m above ground is not much for a 630m band dipole but if the difference to 2m above the ground is just a few dB, one can easily through out the wire during taking a walk and can do some MF /p operation, without a kite, without the need for a free field, without a tower, without a good earth (connection)... Many advantages! Maybe...

BTW i have also modified (extended) the range of my MFJ 259B HF antenna analyzer to cover MF (313...658 kHz) and LF (103...209 kHz). This modification is done very easy! I'm not sure how accurate the measurements are in that range but maybe it gives me some ideas "where i am".

Looking forward to that test!

73, Stefan/DK7FC

Stefan
 
This may be of interest for your next exploit ...
 
Looking back in my 500 kHz log, I see that on 1/3/2010 I had a CW QSO with WD2XSH/35 in South Dakota ... who was running a full size 600 meter dipole. As I recall his antenna was relatively low at 30 or 40' above ground and he was running only 50 or 100 watts. His signal was weak but solid copy over the few nights that he was active. Distance was 1210 mi / 1950kM. Believe his antenna was 'out in the open' as he apparently owns a good sized farm.
 
Jay W1VD  WD2XNS  WE2XGR/2    
 
----- Original Message -----
Sent: Wednesday, July 18, 2012 3:50 PM
Subject: Re: LF: increase in Opera 136 WANTED 136 QRO test stations !

Hi Graham,

Well, as often announced i want to do some tests with a full size dipole for 630m. Maybe the signals will be very weak. QRSS is not usual on MF and so Opera or WSPR will be useful for the tests. However i would have no internet access during the tests...

BTW which information is contained in one OP message? Just the callsign or the callsign+locator?


73, Stefan

Thanks Stefan
 
Main thing is , that  all  stations  have the  same  mode  set , but if  you  are  using   the  windows  software , the  internet  beacon  will  show  the  mode  , OP8 or  OP32 ... this  is  where  the  PIC  based   systems  have a  problem. but  if  the  tx  is  remote , its possible to  simply   run Op  on a   web linked  PC to beacon via the  web ..
 
Monitors  can  run  X2   Opera   , one set to  OP8  , the other  OP32  , with some  CPU overhead , but not a problem on  a  'new'  pc better , just the  one  session.
 
If you  have a  day  selected, then  can post  to the  user groups, to  ensure  the  maximum  number of  Rx  stations 
 
 
73-G.
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