X-GM-THRID: 1208147729060633668 X-Gmail-Labels: rsgb lf X-Gmail-Received: 09546997c011a35198eae21f7ee0aeaf9cd5d2b7 Delivered-To: daveyxm@gmail.com Received: by 10.64.249.17 with SMTP id w17cs159831qbh; Thu, 6 Jul 2006 06:10:44 -0700 (PDT) Received: by 10.48.1.4 with SMTP id 4mr447852nfa; Thu, 06 Jul 2006 06:10:44 -0700 (PDT) Return-Path: Received: from post.thorcom.com (post.thorcom.com [193.82.116.20]) by mx.gmail.com with ESMTP id p43si6861242nfa.2006.07.06.06.10.43; Thu, 06 Jul 2006 06:10:44 -0700 (PDT) Received-SPF: neutral (gmail.com: 193.82.116.20 is neither permitted nor denied by best guess record for domain of owner-rsgb_lf_group@blacksheep.org) DomainKey-Status: good (test mode) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1FyTZd-00068U-40 for rs_out_1@blacksheep.org; Thu, 06 Jul 2006 14:07:17 +0100 Received: from [193.82.116.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1FyTZc-00068L-G2 for rsgb_lf_group@blacksheep.org; Thu, 06 Jul 2006 14:07:16 +0100 Received: from web25403.mail.ukl.yahoo.com ([217.12.10.137]) by relay1.thorcom.net with smtp (Exim 4.62) (envelope-from ) id 1FyTZY-0003k1-UC for rsgb_lf_group@blacksheep.org; Thu, 06 Jul 2006 14:07:16 +0100 Received: (qmail 99265 invoked by uid 60001); 6 Jul 2006 13:07:07 -0000 DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=s1024; d=yahoo.co.uk; h=Message-ID:Received:Date:From:Subject:To:In-Reply-To:MIME-Version:Content-Type:Content-Transfer-Encoding; b=CeE7RBo30FsgzBx+n5eZnPJdRCZAk+wls2205fXpwBdjT5npJUxceAMMyhZ7CohbPTKMlzj69Ybq+y91ugIKTzo/+7x8V48HisiFeXknFSEqFC9eK+CqikxPddCWmiqsq7HabCiZw8J5AihwkNwwidmVLV0l0aMygM0tV7R/qcQ= ; Message-ID: <20060706130707.99263.qmail@web25403.mail.ukl.yahoo.com> Received: from [213.78.182.231] by web25403.mail.ukl.yahoo.com via HTTP; Thu, 06 Jul 2006 14:07:07 BST Date: Thu, 6 Jul 2006 14:07:07 +0100 (BST) From: brian hodgson To: rsgb_lf_group@blacksheep.org In-Reply-To: MIME-Version: 1.0 X-Spam-Score: -0.4 (/) X-Spam-Report: autolearn=disabled,AWL=-0.807,DNS_FROM_RFC_ABUSE=0.374,HTML_30_40=0.056,HTML_MESSAGE=0.001 Subject: Re: LF: Loading Coil Q Content-Type: multipart/alternative; boundary="0-1162201506-1152191227=:93904" Content-Transfer-Encoding: 8bit X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.5 required=5.0 tests=HTML_20_30,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 Status: O X-Status: X-Keywords: X-UID: 6908 --0-1162201506-1152191227=:93904 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: 8bit Hi Gary - I think its all been said by the others but Lloyd Butler's site http://users.tpg.com.au/users/ldbutler/QMeter.htm gives some circuits. I would think that a scope with a X10 probe would be a suitable voltmeter - as Peter says, it doesn't have to be calibrated, just display the ratio. Good luck - Brian G3YKB Gary - G4WGT wrote: Hi All, Thanks to all for additional comments on the previous thread 'LF Loading Coils'. Continuing on the theme of loading coils, is there a simple method of calculating the 'Q' of an LF loading coil without using a 'Q' meter (a device I have not got access to). I would like to carry out my own tests/experiments on my antenna system, it can only add to my knowledge base. 73 Gary - G4WGT. --------------------------------- Inbox full of spam? Get leading spam protection and 1GB storage with All New Yahoo! Mail. --0-1162201506-1152191227=:93904 Content-Type: text/html; charset=iso-8859-1 Content-Transfer-Encoding: 8bit
Hi Gary -
 
I think its all been said by the others but Lloyd Butler's site
 
 
gives some circuits. I would think that a scope with a X10 probe would be a suitable voltmeter - as Peter says, it doesn't have to be calibrated, just display the ratio.
 
Good luck - Brian G3YKB
Gary - G4WGT <g4wgt@tiscali.co.uk> wrote:
Hi All,

Thanks to all for additional comments on the previous thread 'LF Loading
Coils'.

Continuing on the theme of loading coils, is there a simple method of
calculating the 'Q' of an LF loading coil without using a 'Q' meter (a
device I have not got access to). I would like to carry out my own
tests/experiments on my antenna system, it can only add to my knowledge
base.

73

Gary - G4WGT.




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