Return-Path: Received: from mtain-md05.r1000.mx.aol.com (mtain-md05.r1000.mx.aol.com [172.29.96.89]) by air-dd10.mail.aol.com (v129.4) with ESMTP id MAILINDD102-86384c151f76152; Sun, 13 Jun 2010 14:12:06 -0400 Received: from post.thorcom.com (post.thorcom.com [193.82.116.20]) by mtain-md05.r1000.mx.aol.com (Internet Inbound) with ESMTP id 8DC72380002A8; Sun, 13 Jun 2010 14:12:04 -0400 (EDT) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1ONrdL-0005bz-07 for rs_out_1@blacksheep.org; Sun, 13 Jun 2010 19:10:11 +0100 Received: from [193.82.116.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1ONrdK-0005bq-Fy for rsgb_lf_group@blacksheep.org; Sun, 13 Jun 2010 19:10:10 +0100 Received: from mtaout01-winn.ispmail.ntl.com ([81.103.221.47]) by relay1.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1ONrdE-00015U-3n for rsgb_lf_group@blacksheep.org; Sun, 13 Jun 2010 19:10:10 +0100 Received: from know-smtpout-4.server.virginmedia.net ([62.254.123.1]) by mtaout01-winn.ispmail.ntl.com (InterMail vM.7.08.04.00 201-2186-134-20080326) with ESMTP id <20100613180948.YPVR3266.mtaout01-winn.ispmail.ntl.com@know-smtpout-4.server.virginmedia.net> for ; Sun, 13 Jun 2010 19:09:48 +0100 Received: from [86.25.6.138] (helo=desktop) by know-smtpout-4.server.virginmedia.net with esmtp (Exim 4.63) (envelope-from ) id 1ONrcx-00078X-Ks for rsgb_lf_group@blacksheep.org; Sun, 13 Jun 2010 19:09:48 +0100 From: "James Cowburn" To: References: Date: Sun, 13 Jun 2010 19:09:47 +0100 Message-ID: <004901cb0b23$9bc8cc60$0217aac0@desktop> MIME-Version: 1.0 X-Mailer: Microsoft Office Outlook 11 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.3664 Thread-Index: AcsLFwsvNbvxd6xHQq2bN+XXQhQ76QADFRbg In-Reply-To: X-Cloudmark-Analysis: v=1.1 cv=1ggfb5FlKZQUfF3vzm9UBYZ2uTfLsbs/8dSljwg5+mE= c=1 sm=0 a=TZqRZIFIxwoA:10 a=hO-oPbc3tlwA:10 a=8RloEfZUAAAA:8 a=F3M5lZpKAAAA:8 a=9h1oTapCOFi4V8hbF4UA:9 a=F19KPjL_uzD9ZrxZyPkA:7 a=tNThYKJAqKX9G6rtme3_87tlc4YA:4 a=CjuIK1q_8ugA:10 a=O58u2wXj750A:10 a=wk6s2zzMB60A:10 a=SSmOFEACAAAA:8 a=PZlxuyKcF8OdK73ewTQA:9 a=1qGQME4cAY_W9Nza2ggA:7 a=M46QVdjuCjToo0HlvQfPMAXK0UMA:4 a=HpAAvcLHHh0Zw7uRqdWCyQ==:117 X-Spam-Score: 0.3 (/) X-Spam-Report: autolearn=disabled,HTML_FONT_BIG=0.256,HTML_MESSAGE=0.001 Subject: LF: RE: Static protection when using a soundcard as an Rx Content-Type: multipart/alternative; boundary="----=_NextPart_000_004A_01CB0B2B.FD8D3460" 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=EXCUSE_16,HTML_70_80, HTML_FONTCOLOR_UNKNOWN,HTML_FONT_BIG,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-sid: 3039ac1d60594c151f7423ab X-AOL-IP: 193.82.116.20 ------=_NextPart_000_004A_01CB0B2B.FD8D3460 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Hi Brian Welcome to the reflector. Back to back diodes are good option to limit surges and spikes, but others are more qualified than me to advise With best regards Jim Dr. James Cowburn G7NKS E james.cowburn@virgin.net The information transmitted is intended only for the person to whom it is addressed and may contain confidential and/or privileged material. If you are not the intended recipient, you are hereby notified that you must not read this message. Any review, retransmission, dissemination or other use of, or taking of any action in reliance upon, this information by persons or entities other than the intended recipient is prohibited. Consequently, this email is not intended to be contractually binding. If you received this in error, please contact the sender, return the message as well as its attachments and delete the whole from any computer. _____ From: owner-rsgb_lf_group@blacksheep.org [mailto:owner-rsgb_lf_group@blacksheep.org] On Behalf Of Brian Reay Sent: 13 June 2010 17:38 To: rsgb_lf_group@blacksheep.org Subject: LF: Static protection when using a soundcard as an Rx Hi All, My first post to the reflector. I plan to try using a sound card and a "long wire" (well as long as I can fit into the garden) antenna and later a kit lofted antenna but I'm concerned re static. Normally I'd add a "dc short" with an inductor but at 10kHz than is a big inductor. A resistor is another options. Does anyone have any other suggestions, please. 73 Brian ------=_NextPart_000_004A_01CB0B2B.FD8D3460 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

Hi Brian

 

Welcome to the= reflector.   Back to back diodes are good option to limit surges and spikes, but others are more qualified than me to advise

 

 

 

 

With best regards=

 

 

Jim

 

 

Dr. James Cowbu= rn  G7NKS

E james.cowburn@virgin.net

 

The information= transmitted is intended only for the person to whom it is addressed and may contain confidential and/or pri= vileged material. If you are not the intended recipient, you are hereby notifi= ed that you must not read this message.
Any review, retransmission, dissemination or other use of, or taking= of any action in reliance upon, this information by persons or entities other= than the intended recipient is prohibited.  Consequently, this email is no= t intended to be contractually binding.
If you received this in error, please contact the sender, return the= message as well as its attachments and delete the whole from any computer.=

From: owner-rsgb_lf_group@blac= ksheep.org [mailto:owner-= rsgb_lf_group@blacksheep.org] On Behalf Of Brian Reay
Sent: 13 June 2010 17:3= 8
To: rsgb_lf_group@blacksheep.org
Subject: LF: Static pro= tection when using a soundcard as an Rx

 

Hi All, 

 

My first post to the reflector.

 

I plan to try using a sound card and a "= long wire" (well as long as I can fit into the garden) antenna and later a kit lofted ante= nna but I'm concerned re static. 

 

 

Normally I'd add a "dc short" with= an inductor but at 10kHz than is a big inductor. A resistor is another options.

 

Does anyone have any other suggestions, pleas= e.

 

73

Brian

 

------=_NextPart_000_004A_01CB0B2B.FD8D3460--