Return-Path: Received: (qmail 85019 invoked from network); 30 Mar 2005 02:22:59 -0000 Received: from unknown (HELO ptb-spamcore02.plus.net) (192.168.71.3) by ptb-mailstore04.plus.net with SMTP; 30 Mar 2005 02:22:59 -0000 Received: from mailnull by ptb-spamcore02.plus.net with spamcore-l-b (Exim 4.32; FreeBSD) id 1DGSrG-000GtO-MO for dave@picks.force9.co.uk; Wed, 30 Mar 2005 03:23:02 +0100 Received: from [192.168.67.2] (helo=ptb-mxcore02.plus.net) by ptb-spamcore02.plus.net with esmtp (Exim 4.32; FreeBSD) id 1DGSrG-000GtF-EL for dave@picks.force9.co.uk; Wed, 30 Mar 2005 03:23:02 +0100 Received: from post.thorcom.com ([193.82.116.20]) by ptb-mxcore02.plus.net with esmtp (Exim) id 1DGSrD-000M3j-FN for dave@picks.force9.co.uk; Wed, 30 Mar 2005 02:22:59 +0000 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1DGSqi-0006fj-FD for rs_out_1@blacksheep.org; Wed, 30 Mar 2005 03:22:28 +0100 Received: from [193.82.116.30] (helo=relay.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1DGSqi-0006fa-2d for rsgb_lf_group@blacksheep.org; Wed, 30 Mar 2005 03:22:28 +0100 Received: from bay102-f38.bay102.hotmail.com ([64.4.61.48] helo=hotmail.com) by relay.thorcom.net with esmtp (Exim 4.43) id 1DGSqg-0002PD-Hd for rsgb_lf_group@blacksheep.org; Wed, 30 Mar 2005 03:22:28 +0100 Received: from mail pickup service by hotmail.com with Microsoft SMTPSVC; Tue, 29 Mar 2005 18:22:20 -0800 Message-ID: Received: from 64.4.61.210 by by102fd.bay102.hotmail.msn.com with HTTP; Wed, 30 Mar 2005 02:22:19 GMT X-Originating-IP: [64.4.61.210] X-Originating-Email: [hellozerohellozero@hotmail.com] X-Sender: hellozerohellozero@hotmail.com From: "Laurence KL1X" To: rsgb_lf_group@blacksheep.org Date: Tue, 29 Mar 2005 17:22:19 -0900 Mime-Version: 1.0 X-OriginalArrivalTime: 30 Mar 2005 02:22:20.0463 (UTC) FILETIME=[4CFFBBF0:01C534CF] X-SPF-Result: relay.thorcom.net: domain of hotmail.com designates 64.4.61.48 as permitted sender X-Spam-Score: 0.0 (/) X-Spam-Report: autolearn=failed,MSGID_FROM_MTA_HEADER=0 Subject: LF: TA, and toroid and more temperatures Content-Type: text/plain; charset=windows-1252; format=flowed X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Status: No, hits=0.8 required=5.0 tests=MSGID_FROM_MTA_HEADER 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-Spam-Filtered: by PlusNet SpamCORE (v3.00) Content-transfer-encoding: 8bit Your right John! - Must be this leap forward in Eu that did it, or wishful thinking on my part....apologies all - I should look more closely at the clock/date times. Thermals and toroids etc Ive been playing with this thermal aim and fire temp device (Costco abt 70 USD Birthday present) and although I cant vouch for some of the direct figures given their surface characteristics it does quickly point to where I can do better. Measurements March 30th 0130Z - Wind S20 Knots, relatively calm in Coupler housing - Coupler lid off for 15 mins prior to readings - Loop Coupler design schematic see W1TAG web or my site Ambient air 20.6C Transmitter power into Coupler 1Kw Duty whatever XDW at DFCW90 is plus CW id Cap Sangamo G3 1.8nF 25.2C Cap Sangamo G3 3.0nF 26.6C Cap Sangamo G3 7.5nF 34.3C Cap Sangamo G2 3.0nF 28.6C Looks like the sharing of the loop current of over 46.5A is working pretty well - even the "small" G2 at 3nF is standing the losses. Main matching toroid (2:18) 3 stacked 70mm diam 3C90 - 41.8C (had been 50.1C with lid taken off) These toroids I think are the near equivs of Ferroxcube T87/54/14 and 3C90 material Wires temps in loop - ambient as far as I can tell. Inside radio room - Ambient 23.5C Decca PA modules heat sink temps- no air cooling - 1.1Kw input Module 1 43.6C Module 2 42.7C Module 3 43.2C Homebrew wrapped with black anti abrasion tape (3M) LPF Toroid. (2 x stacked 3C90 but around 42mm diameter) 58.1C, OK well below the Curie point (over 200C?) but I have some small losses here.... More useful/useless info to follow... Laurence KL1X >From: "John Andrews" >Reply-To: rsgb_lf_group@blacksheep.org >To: >Subject: LF: Re: TA >Date: Wed, 30 Mar 2005 01:26:32 +0100 > >Laurence, > > > XDW into CT1 pre dusk here in OK. XGJ strong too. Looks like a good nite > > coming.... > >More like a deja vu pre-dawn by the time and date on the capture. > >JA > >