Return-Path: X-Spam-DCC: paranoid 1102; 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=-1.4 required=5.0 tests=BAYES_00,DNS_FROM_AHBL_RHSBL, NO_REAL_NAME 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 t9EJAPQC009755 for ; Wed, 14 Oct 2015 21:10:26 +0200 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1ZmRP6-0006nV-CB for rs_out_1@blacksheep.org; Wed, 14 Oct 2015 20:08:00 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1ZmRP6-0006nK-4f for rsgb_lf_group@blacksheep.org; Wed, 14 Oct 2015 20:08:00 +0100 Received: from lb1-smtp-cloud2.xs4all.net ([194.109.24.21]) by relay1.thorcom.net with esmtps (TLSv1:DHE-RSA-AES256-SHA:256) (Exim 4.86) (envelope-from ) id 1ZmRNw-0008Vb-Go for rsgb_lf_group@blacksheep.org; Wed, 14 Oct 2015 20:07:58 +0100 Received: from [192.168.178.20] ([83.162.220.82]) by smtp-cloud2.xs4all.net with ESMTP id V76R1r00v1nG4D70176S1i; Wed, 14 Oct 2015 21:06:28 +0200 From: roelof@ndb.demon.nl To: Chris Wilson , rsgb_lf_group@blacksheep.org Date: Wed, 14 Oct 2015 21:06:25 +0200 MIME-Version: 1.0 Message-ID: <561EA7B1.18108.B1EF60@roelof.ndb.demon.nl> In-reply-to: <1821006912.20151014193718@chriswilson.tv> References: <1821006912.20151014193718@chriswilson.tv> X-mailer: Pegasus Mail for Windows (4.70) Content-description: Mail message body X-Scan-Signature: aee9e5eeb35c86f052d502ac97832558 Subject: Re: LF: PA0RDT antenna near a TX? Front end OK? Content-type: text/plain; charset=US-ASCII 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 10.1.3.10 Status: O X-Status: X-Keywords: X-UID: 4380 Hello Chris, The gate of the JFET at the input of the antenna will start to conduct when the voltage gets high and prevents it to rise higher. In other words, it is protecting itself. You should look at the output as it can deliver a bit of power, which might be a problem for the receiver front end. 73, Roelof Bakker, PAoRDT