Return-Path: X-Spam-DCC: paranoid 1170; 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 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 t9DFckh4005441 for ; Tue, 13 Oct 2015 17:38:46 +0200 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1Zm1cD-0001ld-0J for rs_out_1@blacksheep.org; Tue, 13 Oct 2015 16:35:49 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1Zm1cC-0001lU-IX for rsgb_lf_group@blacksheep.org; Tue, 13 Oct 2015 16:35:48 +0100 Received: from smarthost01b.mail.zen.net.uk ([212.23.1.3]) by relay1.thorcom.net with esmtp (Exim 4.86) (envelope-from ) id 1Zm1b8-0004tc-Bv for rsgb_lf_group@blacksheep.org; Tue, 13 Oct 2015 16:35:47 +0100 Received: from [82.70.254.222] (helo=OfficeWin7.lan) by smarthost01b.mail.zen.net.uk with esmtp (Exim 4.80) (envelope-from ) id 1Zm1as-0000dc-Fn for rsgb_lf_group@blacksheep.org; Tue, 13 Oct 2015 15:34:26 +0000 Date: Tue, 13 Oct 2015 16:34:25 +0100 From: Chris Wilson Organization: Gatesgarth Developments X-Priority: 3 (Normal) Message-ID: <1541636554.20151013163425@chriswilson.tv> To: rsgb_lf_group@blacksheep.org MIME-Version: 1.0 X-Originating-smarthost01b-IP: [82.70.254.222] X-Scan-Signature: f62c7cf8eeb8e5a327b71719e9bffff1 Subject: LF: Should I be aiming for a better match than this? 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: 4362 13 October 2015 Got my (brave...) friend adjusting the variometer in real time whilst I talked to him by phone, and whilst transmitting at one setting below full power. I watched the `scope in the shack for best results. Is this an adequate match or should I get better than this? I think it's a resistive mismatch that's showing? It's a pain not having a colour scope but I am pretty sure it's amps leading volts being shown here. On full power the amp trips out, not sure if it's SWR mismatch or current overload. Will need to check that out. No arcing at the matching and loading coils though. http://www.chriswilson.tv/best-match.jpg I built the Jim Morittz scopematch using the capacitive divider circuit, can i work out the antenna current from this? Thanks. 2E0ILY -- Best regards, Chris mailto:chris@chriswilson.tv