Return-Path: Received: from rly-da08.mx.aol.com (rly-da08.mail.aol.com [172.19.129.82]) by air-da03.mail.aol.com (v121.4) with ESMTP id MAILINDA033-a8747b885333c1; Sun, 17 Feb 2008 14:04:28 -0500 Received: from post.thorcom.com (post.thorcom.com [193.82.116.20]) by rly-da08.mx.aol.com (v121.4) with ESMTP id MAILRELAYINDA087-a8747b885333c1; Sun, 17 Feb 2008 14:04:21 -0500 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1JQonS-0003yF-RG for rs_out_1@blacksheep.org; Sun, 17 Feb 2008 19:03:30 +0000 Received: from [193.82.116.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1JQonS-0003y6-9H for rsgb_lf_group@blacksheep.org; Sun, 17 Feb 2008 19:03:30 +0000 Received: from imo-d04.mx.aol.com ([205.188.157.36]) by relay1.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1JQonN-0005U0-PU for rsgb_lf_group@blacksheep.org; Sun, 17 Feb 2008 19:03:30 +0000 Received: from G4gvw@aol.com by imo-d04.mx.aol.com (mail_out_v38_r9.3.) id l.bed.1d79eae1 (14501) for ; Sun, 17 Feb 2008 14:02:52 -0500 (EST) From: G4gvw@aol.com Message-ID: Date: Sun, 17 Feb 2008 14:02:51 EST To: rsgb_lf_group@blacksheep.org MIME-Version: 1.0 X-Mailer: 9.0 SE for Windows sub 5035 X-Spam-Flag: NO X-Karma: 0: X-Spam-Score: 0.6 (/) X-Spam-Report: autolearn=disabled,HTML_MESSAGE=0.001,NO_REAL_NAME=0.55 Subject: Re: LF: CW Skimmer Content-Type: multipart/alternative; boundary="-----------------------------1203274971" 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_20_30,HTML_MESSAGE, NO_REAL_NAME 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-IP: 193.82.116.20 X-AOL-SCOLL-AUTHENTICATION: listenair ; SPF_helo : n X-AOL-SCOLL-AUTHENTICATION: listenair ; SPF_822_from : + -------------------------------1203274971 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit Hi John, Yes I did varnish them because that was what the rather ancient "Boy's Book Of something or other....." instructed ! A lot of experiments seemed to involve shellac which, at that age, I thought had some special electrical properties I did learn later that it was probably a waste of time because I then discovered a wonderful little firm called REPANCO who could sell me some beautifully wound coils that used something called "Litz" wire and put most of my efforts to wind the "ultimate crystal set coil" to shame! My first "amplifier" was constructed by replacing the steel diaphragm of a headphone earpiece with a "Golden Syrup" can (empty of course). I later discovered that such an arrangement could also produce a very selective CW filter - style and size of can being carefully selected. Pity beer cans are made from aluminium and have concave bottoms! Rather limits their contribution to "home brew" :)) Happy days 73 de Pat G4GVW es gd dx Qth near Felixstowe, UK -------------------------------1203274971 Content-Type: text/html; charset="US-ASCII" Content-Transfer-Encoding: quoted-printable

Hi John,

Yes I did varnish them because that was what the rather ancient "B= oy's=20 Book Of something or other....." instructed ! A lot of experiments seemed to= =20 involve shellac which, at that age, I thought had some special electric= al=20 properties I did learn later that it was probably a waste of time becau= se I=20 then discovered a wonderful little firm called REPANCO who could sell me som= e=20 beautifully wound coils that used something called "Litz" wire and put=20= most=20 of my efforts to wind the "ultimate crystal set coil" to shame!

My first "amplifier" was constructed by replacing the steel diaph= ragm=20 of a headphone earpiece with a "Golden Syrup" can (empty of course). I later= =20 discovered that such an arrangement could also produce a very selective CW=20 filter - style and size of can being carefully selected. Pity beer cans are=20= made=20 from aluminium and have concave bottoms! Rather limits their contributi= on=20 to "home brew" :))

Happy days=20

73 de Pat=20 G4GVW es gd dx
Qth near Felixstowe,=20 UK

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