Return-Path: Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by mtain-md06.r1000.mx.aol.com (Internet Inbound) with ESMTP id 853D938000096; Sun, 12 Feb 2012 04:43:57 -0500 (EST) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1RwVxY-0002sQ-0p for rs_out_1@blacksheep.org; Sun, 12 Feb 2012 09:43:04 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1RwVxX-0002sH-LT for rsgb_lf_group@blacksheep.org; Sun, 12 Feb 2012 09:43:03 +0000 Received: from smtp-vbr6.xs4all.nl ([194.109.24.26]) by relay1.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1RwVxV-0004vh-A0 for rsgb_lf_group@blacksheep.org; Sun, 12 Feb 2012 09:43:03 +0000 Received: from [10.0.0.153] (a80-101-33-132.adsl.xs4all.nl [80.101.33.132]) (authenticated bits=0) by smtp-vbr6.xs4all.nl (8.13.8/8.13.8) with ESMTP id q1C9gtD4002581 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO) for ; Sun, 12 Feb 2012 10:43:00 +0100 (CET) (envelope-from westberg@xs4all.nl) Message-ID: <4F37899F.9060708@xs4all.nl> Date: Sun, 12 Feb 2012 10:42:55 +0100 From: Albert User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:10.0) Gecko/20120129 Thunderbird/10.0 MIME-Version: 1.0 To: rsgb_lf_group@blacksheep.org References: <4F341AE5.1050704@talktalk.net> <4F342525.1050200@talktalk.net> <4F34313C.1080005@talktalk.net> <1659D80990BC4B5482FF78B6249AACAF@JimPC> <4F34D86D.1010405@talktalk.net> In-Reply-To: <4F34D86D.1010405@talktalk.net> X-Virus-Scanned: by XS4ALL Virus Scanner X-Spam-Score: 1.4 (+) X-Spam-Report: autolearn=disabled,RATWARE_GECKO_BUILD=1.426 Subject: Re: LF: Cats among pigeons Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.0 required=5.0 tests=none autolearn=no version=2.63 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-aol-global-disposition: G X-AOL-SCOLL-SCORE: 0:2:378235296:93952408 X-AOL-SCOLL-URL_COUNT: 0 x-aol-sid: 3039ac1d605a4f3789dc378f X-AOL-IP: 195.171.43.25 X-AOL-SPF: domain : blacksheep.org SPF : none Hello all Opera lovers, Testing Opera speed op1 till op32 under "lab" conditions without the real world phenomena like fading and QRN. The results: 1. if you have solid Opera decodes the received SNR stays the same when switching between opera speeds; 2. the only change is the minimum level where decodes are still possible. After a large number of test transmissions I gathered the following results. Op1 decode @ -24dB Av Op2 decode @ -27dB Av Op4 decode @ -30dB Av Op8 decode @ -33dB Av Op32 decode @ -37dB Av Test set up: TX Flex 1500, 0.2 mw output, attenuators Bird and HP > 120 dB, min. step 1 dB, RX Flex 5000, Software Opera v.1.2.8 Windows 7 64. 73, Albert PA0A