Return-Path: Received: (qmail 4917 invoked from network); 20 Nov 2001 19:20:42 -0000 Received: from unknown (HELO murphys-inbound.services.quay.plus.net) (212.159.14.225) by excalibur-qfe1-smtp-plusnet.harl.plus.net with SMTP; 20 Nov 2001 19:20:42 -0000 X-Priority: 3 X-MSMail-Priority: Normal Received: (qmail 17292 invoked from network); 20 Nov 2001 19:20:56 -0000 Received: from unknown (HELO post.thorcom.com) (212.172.148.70) by murphys.services.quay.plus.net with SMTP; 20 Nov 2001 19:20:56 -0000 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 Received: from majordom by post.thorcom.com with local (Exim 3.33 #2) id 166GJ6-0007bo-00 for rsgb_lf_group-outgoing@blacksheep.org; Tue, 20 Nov 2001 19:11:44 +0000 Received: from mailhost.netscapeonline.co.uk ([194.201.52.152]) by post.thorcom.com with esmtp (Exim 3.33 #2) id 166GJ5-0007bj-00 for rsgb_lf_group@blacksheep.org; Tue, 20 Nov 2001 19:11:43 +0000 Received: from ldsas06-70-121-51.cw-visp.com ([212.137.121.51] helo=netscapeonline.co.uk) by mailhost.netscapeonline.co.uk with esmtp (Exim 3.02 #1) id 166G8l-0004Nv-00 for rsgb_lf_group@blacksheep.org; Tue, 20 Nov 2001 19:01:04 +0000 Message-ID: <3BFA910B.CEA61050@netscapeonline.co.uk> Date: Tue, 20 Nov 2001 17:21:16 +0000 From: "gii3kev" Organization: Netscape Online member X-Mailer: Mozilla 4.6 [en-gb]C-CCK-MCD NetscapeOnline.co.uk (Win95; I) X-Accept-Language: en-GB,en MIME-Version: 1.0 To: "rsgb rsgb" Subject: LF: RE RF AMPS Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 8bit Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org X-Listname: rsgb_lf_group Sender: Hello Jim and others Ref your long message and detail. I am struggling to get one amp to the antenna but I am measuring at the tx 50 ohm output. Why is my signal the strongest from the UK bar MM0ALM in Scotland. I am using very modest power compared to the big Decca Jeeps around especially in the South of England. Perhaps if I measured at the top of the 400 microH loading coil it could be 20 amps. That is why I asked where in the system others were measuring the RF amperage. I agree there is nothing magical about 50 ohms except one has a standard for measurements, swr etc. I have always designed and tested at 50 ohms and NEVER to date blown a MOSFET !!!!!! Like you say some tuning for max SMOKE with no swr indication have literally seen SMOKE!! Again the big Amperage boys are not putting out the biggest signals, can you explain this? G3KEV