Return-Path: Received: (qmail 18632 invoked from network); 16 May 2000 11:57:53 -0000 Received: from unknown (HELO post.thorcom.com) (212.172.148.70) by bells.core.plus.net.uk with SMTP; 16 May 2000 11:57:53 -0000 Received: from majordom by post.thorcom.com with local (Exim 3.02 #1) id 12rfpa-00078f-00 for rsgb_lf_group-outgoing@blacksheep.org; Tue, 16 May 2000 12:48:10 +0100 Content-Transfer-Encoding: 8bit Received: from mail.cc.kuleuven.ac.be ([134.58.10.6]) by post.thorcom.com with esmtp (Exim 3.02 #1) id 12rfpW-00078a-00 for rsgb_lf_group@blacksheep.org; Tue, 16 May 2000 12:48:06 +0100 X-Priority: 3 X-MSMail-Priority: Normal Received: from LCBD15.fys.kuleuven.ac.be (LCBD15.fys.kuleuven.ac.be [134.58.80.15]) by mail.cc.kuleuven.ac.be (8.9.3/8.9.0) with SMTP id NAA640484 for ; Tue, 16 May 2000 13:47:40 +0200 Message-ID: <3.0.1.16.20000516134323.2cd7b862@mail.cc.kuleuven.ac.be> X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 X-Sender: pb623250@mail.cc.kuleuven.ac.be X-Mailer: Windows Eudora Pro Version 3.0.1 (16) Date: Tue, 16 May 2000 13:43:23 To: rsgb_lf_group@blacksheep.org From: "Rik Strobbe" Subject: Re: LF: Spectran beta 3, build 262 In-reply-to: <39211D64.9A0307AA@usa.net> References: <3617AC3245C2D1118A840000F805359C017528B5@pdw-mercury-1.dera.gov.uk> <3.0.1.16.20000505141455.21ffadcc@mail.cc.kuleuven.ac.be> <3.0.1.16.20000509112258.232ff9b2@mail.cc.kuleuven.ac.be> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii; format=flowed Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org X-Listname: rsgb_lf_group Sender: I tested the lastest version (built 262) last night on Marco's (IK1ODO) signal. Results are amazing, while I had poor copy with Spectogram I could get a perfect 'O' signal with Spectran. It just took some time to experiment with the (many) parameters. After some 'playing' with Spectran I found that following parameters gave best results on the IK1ODO beacon signal : Avg Factor = 4 + integration Sample rate = 8000Hz (or 5512.5Hz) Contrast = 125 Res = 0.061Hz (or 0.042Hz at 5512.5Hz sample rate) Speed = default (startup) value Lvl = adjusted until the signal is at +/- 75% of the scale at the upper screen Log = on Setting 'Lvl' high enough is very important, from Spectogram I was used to have a rather low input level for best result but Spectran needs a much higher input level. Also 'Log' must be active (red). Increasing Contrast from 100 (default) to 125 improved things a lot. Marco's signal was too strong to test higher averaging and/or higher Contrast. Question to Marco : what was your ERP last night (+/- 22 UT) ? Would it be possible to decrease it with 3 to 6 dB, to allow to test Spectran on a really weak signal. Finaly : congrats to Alberto and his friend, the lastest version of Spectran is an excellent tool ! 73, Rik ON7YD At 12:05 16/05/00 +0200, you wrote: >The version beta 3, build 262 of Spectran is now availbale at the URL : > http://www.weaksignals.com > >It is a spectral analysis software, still in beta, expecially tailored for >EME and VLF work. Freeware. > >Alberto I2PHD > > > >