Return-Path: X-Spam-DCC: paranoid 1169; 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=-0.1 required=5.0 tests=BAYES_00,HTML_40_50, HTML_MESSAGE,RATWARE_GECKO_BUILD,RCVD_ILLEGAL_IP 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 s95Mt64g005415 for ; Mon, 6 Oct 2014 00:55:06 +0200 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1Xauf1-0003oS-UU for rs_out_1@blacksheep.org; Sun, 05 Oct 2014 23:52:15 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1Xauf1-0003oF-Lt for rsgb_lf_group@blacksheep.org; Sun, 05 Oct 2014 23:52:15 +0100 Received: from smtp1.virginbroadband.com.au ([123.200.191.51] helo=smtp.virginbroadband.com.au) by relay1.thorcom.net with esmtps (TLSv1:DHE-RSA-AES256-SHA:256) (Exim 4.82) (envelope-from ) id 1Xauez-0002ju-5a for rsgb_lf_group@blacksheep.org; Sun, 05 Oct 2014 23:52:14 +0100 Received: from [1.178.11.67] (unknown [1.178.11.67]) by smtp.virginbroadband.com.au (Postfix) with ESMTP id 36C7641417A8 for ; Mon, 6 Oct 2014 09:51:57 +1100 (EST) Message-ID: <5431CB8A.4010407@virginbroadband.com.au> Date: Mon, 06 Oct 2014 09:51:54 +1100 From: edgar User-Agent: Mozilla/5.0 (Windows NT 5.1; rv:24.0) Gecko/20100101 Thunderbird/24.6.0 MIME-Version: 1.0 To: rsgb_lf_group@blacksheep.org References: <621ECFC5FFD44C5989A1DA8C7DE6D149@AGB> <542DB6ED.1050101@psk31.plus.com> <0ED8E8831B5B4AF7B303B9D722D436B0@AGB> <542ED037.5020506@psk31.plus.com> <5431727C.3040406@psk31.plus.com> <54317AAA.90402@psk31.plus.com> <5431A0DB.80403@psk31.plus.com> <5431C102.6070007@gmail.com> <5431C1BC.3050208@gmail.com> In-Reply-To: <5431C1BC.3050208@gmail.com> X-HELO-Warning: Remote host 123.200.191.51 (smtp1.virginbroadband.com.au) used invalid HELO/EHLO smtp.virginbroadband.com.au - verification failed X-Scan-Signature: 3f8d74a8c70dd416d0a3a1dbcb9bb89f Subject: Re: LF: Re: Schumann in my garden Content-Type: multipart/alternative; boundary="------------050004000103060204000108" 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 10.1.3.10 Status: O X-Status: X-Keywords: X-UID: 677 This is a multi-part message in MIME format. --------------050004000103060204000108 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Hi Stefan, I suggest that you cover the LPF and FET with a piece of tin to stop any external signals entering the circuit after the LPF. A thin piece of metal from coffee tin or similar food container can be bent in a U shape to cover the components and then soldered at a few points to the copper ground plane. Just leave a small clearance holes at the ends for the wires to pass through. Regards, Edgar Moonah, Tasmania. --------------050004000103060204000108 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Hi Stefan,

I suggest that you cover the LPF and FET with a piece of tin to stop any external signals entering the circuit after the LPF.

A thin piece of metal from coffee tin or similar food container can be bent in a U shape to cover the components and then soldered at a few points to the copper ground plane.

Just leave a small clearance holes at the ends for the wires to pass through.

Regards, Edgar
Moonah, Tasmania.

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