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[195.171.43.25]) by mx.google.com with ESMTP id dn6si10389604wib.55.2014.04.01.11.58.15 for ; Tue, 01 Apr 2014 11:58:16 -0700 (PDT) Received-SPF: neutral (google.com: 195.171.43.25 is neither permitted nor denied by best guess record for domain of owner-rsgb_lf_group@blacksheep.org) client-ip=195.171.43.25; Authentication-Results: mx.google.com; spf=neutral (google.com: 195.171.43.25 is neither permitted nor denied by best guess record for domain of owner-rsgb_lf_group@blacksheep.org) smtp.mail=owner-rsgb_lf_group@blacksheep.org; dkim=pass header.i=@mx.aol.com Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1WV3QD-0005zI-Lq for rs_out_1@blacksheep.org; Tue, 01 Apr 2014 19:28:29 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1WV3QD-0005z9-6N for rsgb_lf_group@blacksheep.org; Tue, 01 Apr 2014 19:28:29 +0100 Received: from omr-m06.mx.aol.com ([64.12.143.80]) by relay1.thorcom.net with esmtps (TLSv1:DHE-RSA-AES256-SHA:256) (Exim 4.82) (envelope-from ) id 1WV3QB-0003Oq-1x for rsgb_lf_group@blacksheep.org; Tue, 01 Apr 2014 19:28:28 +0100 Received: from mtaout-mcb01.mx.aol.com (mtaout-mcb01.mx.aol.com [172.26.50.173]) by omr-m06.mx.aol.com (Outbound Mail Relay) with ESMTP id AE763700308E2 for ; Tue, 1 Apr 2014 14:28:23 -0400 (EDT) Received: from White (95-91-237-52-dynip.superkabel.de [95.91.237.52]) by mtaout-mcb01.mx.aol.com (MUA/Third Party Client Interface) with ESMTPA id EB76A3800009B for ; Tue, 1 Apr 2014 14:28:22 -0400 (EDT) Message-ID: <090E5B9230D546BDB7E7E559F0DA75D6@White> From: "Markus Vester" To: References: <533AF7E2.2050401@gmail.com> Date: Tue, 1 Apr 2014 20:28:26 +0200 MIME-Version: 1.0 X-Priority: 3 X-MSMail-Priority: Normal Importance: Normal X-Mailer: Microsoft Windows Live Mail 12.0.1606 X-MIMEOLE: Produced By Microsoft MimeOLE V12.0.1606 x-aol-global-disposition: G DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=mx.aol.com; s=20121107; t=1396376903; bh=bI6zRSwRLCumEsnV+wnzpkQegzLHFOOc3AL0W+ZEouo=; h=From:To:Subject:Message-ID:Date:MIME-Version:Content-Type; b=jAgMdVRDrZN9c458fZvPz8IPyM+pMWmYKHUP0EEZEyzm7Kh6+cm+O+fpWtxzvWcs1 W0WitVZhvbeyHH44qWSgZiUoc2HQs13dEcf0sexnnXr3SNXcBgOEj1cz2++Wa3K9WP yck7Tr3ZgBNAPqlQJrI5pP2nIaf0jO4H8P0IY4jM= x-aol-sid: 3039ac1a32ad533b05465f88 X-AOL-IP: 95.91.237.52 X-Spam-Score: 0.4 (/) 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: Yes... all you'll need for 8.3 kHz is make another coil of same size, but wind ~ 3.5 times as many turns (1160) of 3.5 times thinner wire (0.32 mm). Try it! 73, Markus (DF6NM) [...] Content analysis details: (0.4 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 RCVD_IN_DNSWL_NONE RBL: Sender listed at http://www.dnswl.org/, no trust [64.12.143.80 listed in list.dnswl.org] 0.0 FREEMAIL_FROM Sender email is commonly abused enduser mail provider (markusvester[at]aol.com) -0.0 SPF_PASS SPF: sender matches SPF record -0.6 RP_MATCHES_RCVD Envelope sender domain matches handover relay domain 0.0 HTML_MESSAGE BODY: HTML included in message 0.0 T_DKIM_INVALID DKIM-Signature header exists but is not valid 1.0 FREEMAIL_REPLY From and body contain different freemails X-Scan-Signature: fce77e88417377663dedf94f027ec622 Subject: Re: LF: WH2XBA/4 coil Content-Type: multipart/alternative; boundary="----=_NextPart_000_001C_01CF4DE8.EFD1A8C0" X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.6 required=5.0 tests=HTML_40_50,HTML_MESSAGE, MISSING_OUTLOOK_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 Dies ist eine mehrteilige Nachricht im MIME-Format. ------=_NextPart_000_001C_01CF4DE8.EFD1A8C0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Yes... all you'll need for 8.3 kHz is make another coil of same size, = but wind ~ 3.5 times as many turns (1160) of 3.5 times thinner wire = (0.32 mm).=20 Try it! 73, Markus (DF6NM) From: DK7FC=20 Sent: Tuesday, April 01, 2014 8:01 PM To: rsgb_lf_group@blacksheep.org=20 Subject: Re: LF: Re: [Lowfer] 29.499 tonight OP2H/DS... RR DEX, that looks fine! And it gives an impression between coils at 30 = kHz to coils at 9 kHz. 73, Stefan From: Dexter McIntyre W4DEX=20 Sent: Tuesday, April 01, 2014 7:31 PM To: rsgb_lf_group@blacksheep.org=20 Subject: LF: WH2XBA/4 coil I've received a lot of questions about the new coil: https://www.dropbox.com/s/2s04hl1zhs4qfhd/25mh_coil.jpg The form is a pool chemical container from about 20 years past. Resorting to a more sensible measurement standard I conclude the = following: Total turns counts 325 Coil length 375 mm This indicates a wire size of AWG 17 which is 1.15 mm diameter (375 mm=20 / 325 turns =3D 1.1538 mm per turn) Coil diameter 350 mm This calculates to approximately 24 mH which is close to the 25 mH I=20 initially measured which I later revised to 26.1 mH. However I've made so many calculation errors recently this also may=20 change :) Dex ------=_NextPart_000_001C_01CF4DE8.EFD1A8C0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Yes... all you'll need for 8.3 kHz = is make another coil of same size, but wind ~ 3.5 times as = many turns=20 (1160) of 3.5 times thinner wire (0.32 mm). 
 
Try it!
 
73, Markus (DF6NM)

From: DK7FC
Sent: Tuesday, April 01, 2014 8:01 PM
To: rsgb_lf_group@blacksheep.org
Subject: Re: LF: Re: [Lowfer] 29.499 tonight=20 OP2H/DS...

RR DEX, that looks fine! And it gives an = impression=20 between coils at 30 kHz to coils at 9 kHz.

73, = Stefan

From: Dexter McIntyre W4DEX
Sent: Tuesday, April 01, 2014 7:31 PM
To: rsgb_lf_group@blacksheep.org= =20
Subject: LF: WH2XBA/4 coil

I've = received a lot=20 of questions about the new coil:

https://= www.dropbox.com/s/2s04hl1zhs4qfhd/25mh_coil.jpg

The=20 form is a pool chemical container from about 20 years past.
Resorting = to a=20 more sensible measurement standard I conclude the = following:

Total turns=20 counts 325

Coil length 375 mm

This indicates a wire size = of AWG 17=20 which is 1.15 mm diameter  (375 mm
/ 325 turns =3D 1.1538 mm = per=20 turn)

Coil diameter 350 mm

This calculates to = approximately 24 mH=20 which is close to the 25 mH I
initially measured which I later = revised to=20 26.1 mH.

However I've made so many calculation errors recently = this also=20 may
change :)

Dex


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