Return-Path: Received: (qmail 14630 invoked from network); 12 May 2000 11:08:22 -0000 Received: from unknown (HELO post.thorcom.com) (212.172.148.70) by bells.core.plus.net.uk with SMTP; 12 May 2000 11:08:22 -0000 Received: from majordom by post.thorcom.com with local (Exim 3.02 #1) id 12qDC9-00063Q-00 for rsgb_lf_group-outgoing@blacksheep.org; Fri, 12 May 2000 12:01:25 +0100 Content-Transfer-Encoding: 8bit Received: from bob.dera.gov.uk ([192.5.29.90]) by post.thorcom.com with esmtp (Exim 3.02 #1) id 12qDC5-00063L-00 for rsgb_lf_group@blacksheep.org; Fri, 12 May 2000 12:01:22 +0100 Received: by bob.dera.gov.uk; (8.8.8/1.3/10May95) id MAA05047; Fri, 12 May 2000 12:04:29 +0100 (BST) X-Priority: 3 X-MSMail-Priority: Normal Received: (qmail 6274 invoked from network); 12 May 2000 11:57:05 -0000 Received: from gauntlet.mail.dera.gov.uk (172.16.9.10) by baton.dera.gov.uk with SMTP; 12 May 2000 11:57:05 -0000 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 Received: by gauntlet.mail.dera.gov.uk; id KAA15299; Fri, 12 May 2000 10:45:19 GMT Received: from unknown(146.80.11.40) by gauntlet.mail.dera.gov.uk via smap (3.2) id xma015242; Fri, 12 May 00 10:45:14 GMT Received: from frn-gold-1.dera.gov.uk (unverified) by mailguard.dera.gov.uk (Content Technologies SMTPRS 4.1.5) with ESMTP id for ; Fri, 12 May 2000 12:05:51 +0100 Received: by frn-gold-1.dera.gov.uk with Internet Mail Service (5.0.1460.8) id ; Fri, 12 May 2000 11:59:54 +0100 Message-ID: <3617AC3245C2D1118A840000F805359C017528D6@pdw-mercury-1.dera.gov.uk> From: "Talbot Andrew" To: rsgb_lf_group@blacksheep.org Subject: LF: RE: QRSS and QRN Date: Fri, 12 May 2000 11:59:52 +0100 MIME-Version: 1.0 X-Mailer: Internet Mail Service (5.0.1460.8) Content-Type: text/plain; charset=iso-8859-1; format=flowed Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org X-Listname: rsgb_lf_group Sender: The static crashes are only " 20dB over 9" for the few microseconds while they are happening. When using Spectran etc. try turning off the AGC completely and just allow the static crashes to overload the receiver for their duration. The Rx will continue working normally between the crashes and should allow through the signal for processing at normal strength. Leaving the AGC operating just destroys receiver gain during its hang period. I find that for almost any radio monitoring activity manual gain control is better than AGC operation. Andy G4JNT > ---------- > From: Mike Dennison[SMTP:mike.dennison@rsgb.org.uk] > Reply To: rsgb_lf_group@blacksheep.org > Sent: 2000-05-12 10:27 > To: rsgb_lf_group@blacksheep.org > Subject: LF: QRSS and QRN > > > >From Dave G3YMC > > If Spectran and the other programs offer the capability to copy > stations > > 20dB below noise, in these circumstances this would only take you to > s9, > > which was certainly copyable with normal CW. I admit the static > levels > > recently have been much higher than usual, and would not expect > anyone to > > attempt to work transatlantic under such conditions (or to even > ragchew!) > > I have two weakish carriers on the band, 136.7 and 137.8 which are > > normally just above the noise. I wonder how copy of these is on > Spectran > > with 20dB over heavy static - I can just about copy traces here in > the > > crashes. > -- The Information contained in this E-Mail and any subsequent correspondence is private and is intended solely for the intended recipient(s). For those other than the recipient any disclosure, copying, distribution, or any action taken or omitted to be taken in reliance on such information is prohibited and may be unlawful.