Return-Path: Received: (qmail 13821 invoked from network); 19 Feb 2002 21:40:24 -0000 Received: from unknown (HELO murphys-inbound.services.quay.plus.net) (212.159.14.225) by excalibur.plus.net with SMTP; 19 Feb 2002 21:40:24 -0000 Received: (qmail 11561 invoked from network); 19 Feb 2002 21:40:22 -0000 Received: from unknown (HELO post.thorcom.com) (212.172.148.70) by murphys.services.quay.plus.net with SMTP; 19 Feb 2002 21:40:22 -0000 Received: from majordom by post.thorcom.com with local (Exim 3.33 #2) id 16dJSL-0001Tn-00 for rsgb_lf_group-outgoing@blacksheep.org; Tue, 19 Feb 2002 23:13:53 +0000 Received: from fep04.swip.net ([130.244.199.132] helo=fep04-svc.swip.net) by post.thorcom.com with esmtp (Exim 3.33 #2) id 16dJSK-0001Ti-00 for rsgb_lf_group@blacksheep.org; Tue, 19 Feb 2002 23:13:52 +0000 Received: from oemcomputer ([213.101.38.195]) by fep04-svc.swip.net with SMTP id <20020219213549.BXIP3384.fep04-svc.swip.net@oemcomputer> for ; Tue, 19 Feb 2002 22:35:49 +0100 Message-ID: <002a01c1b98d$83568fa0$c32665d5@oemcomputer> From: "Johan Bodin" To: rsgb_lf_group@blacksheep.org References: <5.1.0.14.0.20020218184622.00aafa88@gemini.herts.ac.uk> <5.1.0.14.0.20020219140019.00ac1d70@gemini.herts.ac.uk> Subject: LF: Re: Re: Vectorscope display Date: Tue, 19 Feb 2002 22:35:42 +0100 MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1; format=flowed Content-Transfer-Encoding: 8bit X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2600.0000 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org X-Listname: rsgb_lf_group Sender: James Moritz wrote: >I don't seem to be able to send it to >sm6lkm.jbeab@swipnet.se, Johan, so perhaps you can get it from Dave's site >later, or is there something else I can do? No problem. The bounce message you got must have been a false alarm. Your message arrived here in one piece at 1255 UTC. Thanks! It looks almost identical to my drawing... What a coincidence. I have a little problem. My CW BFO is not locked to the 5MHz reference as all the other oscillators in the RX are so it is quite useless for narrowband work. I have two options, either to use SSB filter and find some way to remove the harmonic response from the vectorscope mixer (becomes a problem at about 1000 Hz vectorscope LO and below) or to use CW mode with SSB BFO which is not fun at all because of double sided reception (+3dB more noise at best). Should I build a preselector BPF for the vectorscope or should I build a 199 or 201 kHz phase locked BFO for use with the narrow CW filter? Any ideas? 73 Johan SM6LKM