Return-Path: Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by mtain-db02.r1000.mx.aol.com (Internet Inbound) with ESMTP id BDBB53800008E; Wed, 13 Jun 2012 14:43:18 -0400 (EDT) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1SesWE-0003P4-Le for rs_out_1@blacksheep.org; Wed, 13 Jun 2012 19:42:14 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1SesWE-0003Ov-4L for rsgb_lf_group@blacksheep.org; Wed, 13 Jun 2012 19:42:14 +0100 Received: from out1.ip04ir2.opaltelecom.net ([62.24.128.240]) by relay1.thorcom.net with esmtp (Exim 4.77) (envelope-from ) id 1SesWC-0005PO-GI for rsgb_lf_group@blacksheep.org; Wed, 13 Jun 2012 19:42:13 +0100 X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: Ah4FAKTe2E9cHn9P/2dsb2JhbABFn2YDlVeBCIITBQEBBQgBAQNJAhwQAQEDBQIBAwQNBAEBCiUUAQQaBhYIBhMKAQICAQGHfro0izGCdoMbA4gOhTKXXYJg X-IronPort-AV: E=Sophos;i="4.77,405,1336345200"; d="scan'208,217";a="375513766" Received: from host-92-30-127-79.as13285.net (HELO xphd97xgq27nyf) ([92.30.127.79]) by out1.ip04ir2.opaltelecom.net with SMTP; 13 Jun 2012 19:42:10 +0100 Message-ID: <00a801cd4994$3ab43b10$0401a8c0@xphd97xgq27nyf> From: "mal hamilton" To: References: <009e01cd4992$8173df80$0401a8c0@xphd97xgq27nyf> Date: Wed, 13 Jun 2012 18:42:04 -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: More info requested Xtal osc or VFO with output of 5V sq or sine wave not critical and 27V regulated at 300mA for driver stages and 60/70V for PA FETS With an adjustable HT psu, regulation not required the output can be varied from Nil to 400 Watts. 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 [62.24.128.240 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: 20fb97b64762a0bd80c12a4b2f6724b0 Subject: LF: Re: decca 5501 Content-Type: multipart/alternative; boundary="----=_NextPart_000_00A5_01CD4994.3A847880" 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: 0:2:429885632:93952408 X-AOL-SCOLL-URL_COUNT: 0 x-aol-sid: 3039ac1d40564fd8df462c5d 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_00A5_01CD4994.3A847880 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable More info requested Xtal osc or VFO with output of 5V sq or sine wave not critical and 27V = regulated at 300mA for driver stages and 60/70V for PA FETS With an adjustable HT psu, regulation not required the output can be = varied from Nil to 400 Watts. de mal/g3kev =20 ----- Original Message -----=20 From: mal hamilton=20 To: rsgb=20 Sent: Wednesday, June 13, 2012 6:29 PM Subject: LF: decca 5501 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_00A5_01CD4994.3A847880 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
More info requested
Xtal osc or VFO with output of 5V sq or sine = wave not=20 critical and 27V regulated at 300mA for driver stages and 60/70V = for PA=20 FETS
With an adjustable HT psu, regulation not=20 required the output can be varied from Nil to 400 = Watts.
de mal/g3kev
 
 
----- Original Message -----
From:=20 mal=20 hamilton
To: rsgb
Sent: Wednesday, June 13, 2012 = 6:29=20 PM
Subject: LF: decca 5501

MF
Now that MF is shaping up with DL permits = and=20 others. If you can find a DECCA sub unit 5501 it takes less than a = couple of=20 hours to modify/ adapt for the 472 Khz band. In round figure values = all that=20 is needed is a 22uH in series with 5 nF C. Adjust L for = frequency of=20 interest of centre of band. A matching transformer is then required to = match=20 approx 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=20 band. A loaded inv L antenna and you are in = business.
73 de mal/g3kev
 
 
 
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