Return-Path: Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by mtain-df04.r1000.mx.aol.com (Internet Inbound) with ESMTP id EECDE38000097; Wed, 13 Jun 2012 14:30:59 -0400 (EDT) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1SesKI-0003I0-LC for rs_out_1@blacksheep.org; Wed, 13 Jun 2012 19:29:54 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1SesKI-0003Hr-7U for rsgb_lf_group@blacksheep.org; Wed, 13 Jun 2012 19:29:54 +0100 Received: from out1.ip05ir2.opaltelecom.net ([62.24.128.241]) by relay1.thorcom.net with esmtp (Exim 4.77) (envelope-from ) id 1SesKG-0005La-LB for rsgb_lf_group@blacksheep.org; Wed, 13 Jun 2012 19:29:53 +0100 X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: AhwFADTS2E9cHn9P/2dsb2JhbABFn2YDlVeBCIITFAEBA0kCLAIIAgEHARw5AQQaBggcHQECAgEBh36YdqErkUIDiA6FMpddgmA X-IronPort-AV: E=Sophos;i="4.77,405,1336345200"; d="scan'208,217";a="384407834" Received: from host-92-30-127-79.as13285.net (HELO xphd97xgq27nyf) ([92.30.127.79]) by out1.ip05ir2.opaltelecom.net with SMTP; 13 Jun 2012 19:29:50 +0100 Message-ID: <009e01cd4992$8173df80$0401a8c0@xphd97xgq27nyf> From: "mal hamilton" To: "rsgb" Date: Wed, 13 Jun 2012 18:29:44 -0000 MIME-Version: 1.0 X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2600.0000 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2600.0000 X-Spam-Score: 0.0 (/) 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: MF Now that MF is shaping up with DL permits and others. If you can find a DECCA sub unit 5501 it takes less than a couple of hours to modify/ adapt for the 472 Khz band. In round figure values all that is needed is a 22uH in series with 5 nF C. Adjust L for frequency of interest of centre of band. A matching transformer is then required to match approx 5 Ohms to 50 Ohms and LPF to the antenna. I use an old tube TV LOPT and it works well with good efficiency. A couple of hours work and you can be on the new 473 band. A loaded inv L antenna and you are in business. 73 de mal/g3kev [...] Content analysis details: (0.0 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 RCVD_IN_DNSWL_NONE RBL: Sender listed at http://www.dnswl.org/, no trust [62.24.128.241 listed in list.dnswl.org] 0.0 FSL_XM_419 Old OE version in X-Mailer only seen in 419 spam -0.0 SPF_PASS SPF: sender matches SPF record 0.0 HTML_MESSAGE BODY: HTML included in message 0.0 FSL_UA FSL_UA 0.0 AXB_XMAILER_MIMEOLE_OL_024C2 AXB_XMAILER_MIMEOLE_OL_024C2 X-Scan-Signature: 64a43ebf6189d3fbac7adf77f3718769 Subject: LF: decca 5501 Content-Type: multipart/alternative; boundary="----=_NextPart_000_009B_01CD4992.8116CB60" 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 x-aol-global-disposition: G X-AOL-SCOLL-SCORE: 0:2:317040704:93952408 X-AOL-SCOLL-URL_COUNT: 0 x-aol-sid: 3039ac1d40d84fd8dc6304d0 X-AOL-IP: 195.171.43.25 X-AOL-SPF: domain : blacksheep.org SPF : none This is a multi-part message in MIME format. ------=_NextPart_000_009B_01CD4992.8116CB60 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable MF Now that MF is shaping up with DL permits and others. If you can find a = DECCA sub unit 5501 it takes less than a couple of hours to modify/ = adapt for the 472 Khz band. In round figure values all that is needed is = a 22uH in series with 5 nF C. Adjust L for frequency of interest of = centre of band. A matching transformer is then required to match approx = 5 Ohms to 50 Ohms and LPF to the antenna. I use an old tube TV LOPT and it works well with good efficiency. A couple of hours work and you can be on the new 473 band. A loaded inv = L antenna and you are in business. 73 de mal/g3kev ------=_NextPart_000_009B_01CD4992.8116CB60 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
MF
Now that MF is shaping up with DL permits = and others.=20 If you can find a DECCA sub unit 5501 it takes less than a couple of = hours to=20 modify/ adapt for the 472 Khz band. In round figure values all that is = needed is=20 a 22uH in series with 5 nF C. Adjust L for frequency of = interest of=20 centre of band. A matching transformer is then required to match approx=20 5 Ohms to 50 Ohms and LPF to the antenna.
I use an old tube TV LOPT and it works  = well with=20 good efficiency.
A couple of hours work and you can be on the new = 473 band.=20 A loaded inv L antenna and you are in business.
73 de mal/g3kev
 
 
 
------=_NextPart_000_009B_01CD4992.8116CB60--