Return-Path: Received: (qmail 28444 invoked from network); 26 Apr 2002 13:47:35 -0000 Received: from unknown (HELO warrior.services.quay.plus.net) (212.159.14.227) by excalibur.plus.net with SMTP; 26 Apr 2002 13:47:35 -0000 X-Priority: 3 X-MSMail-Priority: Normal Received: (qmail 21111 invoked from network); 26 Apr 2002 12:23:54 -0000 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 Received: from unknown (HELO post.thorcom.com) (212.172.148.70) by warrior.services.quay.plus.net with SMTP; 26 Apr 2002 12:23:54 -0000 Received: from majordom by post.thorcom.com with local (Exim 3.33 #2) id 1716Fe-0006Df-00 for rsgb_lf_group-outgoing@blacksheep.org; Fri, 26 Apr 2002 14:59:06 +0100 Received: from imo-r07.mx.aol.com ([152.163.225.103]) by post.thorcom.com with esmtp (Exim 3.33 #2) id 1716Fc-0006DY-00 for rsgb_lf_group@blacksheep.org; Fri, 26 Apr 2002 14:59:05 +0100 Received: from G0MRF@aol.com by imo-r07.mx.aol.com (mail_out_v32.5.) id l.63.a95a954 (17526) for ; Fri, 26 Apr 2002 08:20:14 -0400 (EDT) From: G0MRF@aol.com Message-ID: <63.a95a954.29fa9ffe@aol.com> Date: Fri, 26 Apr 2002 08:20:14 EDT Subject: Re: LF: May 2-4 KN97LN Activity To: rsgb_lf_group@blacksheep.org MIME-Version: 1.0 Content-Type: text/html; charset=windows-1252 X-Mailer: AOL 6.0 for Windows UK sub 10512 Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org X-Listname: rsgb_lf_group Sender: Content-transfer-encoding: 8bit In a message dated 4/26/02 12:50:41 PM GMT Daylight Time, j.r.moritz@herts.ac.uk writes:


At 11:58 26/04/2002 +0400, you wrote:
>I continue to have the big QRM from:
>Alfa(Omega) (azim~196 degr, fq ~12kHz, QRB~200km, pwr~300KW)
>Chajka(Loran) (azim~240 degr, fq~100kHz, QRB~450km, pwr~800KW)
>Radio Chechnya(AM) / Radio Rossii(AM) -
>(azim~168 degr, fq~170/1190kHz, QRB~280km, pwr~150KW/2MW)



Hello Ed.

It should be possible to work QRSS between the  lines of the Loran while orienting a receive loop, or cofiguring a noise cancelling system on one of the other sources.

Whatever you choose I would suggest a band pass filter for the 136k band to avoid intermodulation products and if you are using a large antenna, an attenuator. Not sure how a beverage will work as 2km is still less then 1 wavelength. Also the height above ground would be a very small fraction of a wavelength. I'm sure there would be several members of the reflector interested in the results of work with an antenna of this type.

There are also many stations across Europe who would like to have a cross band QSO, so even if you have high QRM, you can still have 50 QSOs with a Big TX signal.

Good luck with the  'expedition'

73

David  G0MRF