Return-Path: X-Spam-DCC: paranoid 1480; Body=2 Fuz1=2 Fuz2=2 X-Spam-Checker-Version: SpamAssassin 3.1.3 (2006-06-01) on lipkowski.org X-Spam-Level: X-Spam-Status: No, score=-2.2 required=5.0 tests=BAYES_00,DNS_FROM_AHBL_RHSBL, FORGED_RCVD_HELO,HTML_MESSAGE,SPF_PASS autolearn=no version=3.1.3 Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by paranoid.lipkowski.org (8.13.7/8.13.7) with ESMTP id u9CEdu3S022404 for ; Wed, 12 Oct 2016 16:39:56 +0200 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1buKem-0005D2-Bu for rs_out_1@blacksheep.org; Wed, 12 Oct 2016 15:37:20 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1buKem-0005Ct-32 for rsgb_lf_group@blacksheep.org; Wed, 12 Oct 2016 15:37:20 +0100 Received: from emout02.email.it ([212.97.34.18]) by relay1.thorcom.net with esmtp (Exim 4.87) (envelope-from ) id 1buKej-0007v3-EY for rsgb_lf_group@blacksheep.org; Wed, 12 Oct 2016 15:37:19 +0100 Received: from emout02.email.it (localhost [127.0.0.1]) by emout02.email.it (Postfix) with ESMTP id 3BFB6821A6 for ; Wed, 12 Oct 2016 16:37:15 +0200 (CEST) Received: from x220.localnet (unknown [94.36.132.138]) by emout02.email.it (Postfix) with ESMTPA id 16D40821A8 for ; Wed, 12 Oct 2016 16:37:14 +0200 (CEST) From: Claudio Pozzi To: rsgb_lf_group@blacksheep.org Date: Wed, 12 Oct 2016 16:37:23 +0200 Message-ID: <3018579.iHz3xfyXX4@x220> User-Agent: KMail/4.14.1 (Linux/3.16.0-4-amd64; KDE/4.14.2; x86_64; ; ) In-Reply-To: <57FD3F9F.80409@lineone.net> References: <57FD3F9F.80409@lineone.net> MIME-Version: 1.0 X-Scan-Signature: 32d4aaaf019758ff5a0d8e92eec683e6 Subject: Re: LF: Audio link Content-Type: multipart/alternative; boundary="nextPart1771645.D1O0MNsjyD" Content-Transfer-Encoding: 7Bit 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-Scanned-By: MIMEDefang 2.56 on 10.1.3.11 Content-Length: 4640 Status: O X-Status: X-Keywords: X-UID: 9040 This is a multi-part message in MIME format. --nextPart1771645.D1O0MNsjyD Content-Transfer-Encoding: 7Bit Content-Type: text/plain; charset="us-ascii" On Tuesday 11 October 2016 20:38:07 you wrote: > To avoid having laptop running in the shack, which occasionally > produces some QRM, I can send received audio from the shack to a > desktop computer in the house on a twisted telephone pair. This works > but any wire connection between shack and this desktop introduces some > spurious signals on 136khz even if I use an audio isolating transformer. > The AC 230 power supply in the shack and the desktop computer grounding wire are equipotential, share the same grounding system? 73 de Claudio ik2pii -- ZE-Light e ZE-Pro: servizi zimbra per caselle con dominio email.it, per tutti i dettagli Clicca qui http://posta.email.it/caselle-di-posta-z-email-it/?utm_campaign=email_Zimbra_102014=main_footer/f Sponsor: Registra i domini che desideri ed inizia a creare il tuo sito web Clicca qui: http://adv.email.it/cgi-bin/foclick.cgi?mid=13323&d=12-10 --nextPart1771645.D1O0MNsjyD Content-Transfer-Encoding: 7Bit Content-Type: text/html; charset="us-ascii"

On Tuesday 11 October 2016 20:38:07 you wrote:

> To avoid having laptop running in the shack, which occasionally

> produces some QRM, I can send received audio from the shack to a

> desktop computer in the house on a twisted telephone pair. This works

> but any wire connection between shack and this desktop introduces some

> spurious signals on 136khz even if I use an audio isolating transformer.

The AC 230 power supply in the shack and the desktop computer grounding wire are equipotential, share the same grounding system?

73 de Claudio ik2pii

----
ZE-Light e ZE-Pro: servizi zimbra per caselle con dominio email.it, per tutti i dettagli clicca qui

Sponsor:
Registra i domini che desideri ed inizia a creare il tuo sito web
Clicca qui

--nextPart1771645.D1O0MNsjyD--