Return-Path: Received: from rly-db10.mx.aol.com (rly-db10.mail.aol.com [172.19.130.85]) by air-db04.mail.aol.com (v121_r4.4) with ESMTP id MAILINDB042-aeb49845aed27d; Sat, 31 Jan 2009 09:06:44 -0500 Received: from post.thorcom.com (post.thorcom.com [193.82.116.20]) by rly-db10.mx.aol.com (v121_r4.4) with ESMTP id MAILRELAYINDB101-aeb49845aed27d; Sat, 31 Jan 2009 09:06:39 -0500 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1LTGUI-0001Bx-Ut for rs_out_1@blacksheep.org; Sat, 31 Jan 2009 14:06:22 +0000 Received: from [193.82.116.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1LTGUI-0001Bo-Jj for rsgb_lf_group@blacksheep.org; Sat, 31 Jan 2009 14:06:22 +0000 Received: from sighthound.demon.co.uk ([80.177.174.126]) by relay1.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1LTGUI-00049O-0j for rsgb_lf_group@blacksheep.org; Sat, 31 Jan 2009 14:06:22 +0000 Received: from lurcher (lurcher.twatt.home [10.0.0.8]) by deerhound.twatt.home (Postfix) with ESMTP id F3B673B65F for ; Sat, 31 Jan 2009 14:06:15 +0000 (GMT) Date: Sat, 31 Jan 2009 14:06:15 +0000 From: John P-G To: rsgb_lf_group@blacksheep.org Message-ID: <20090131140615.4f3c645f@lurcher> In-Reply-To: References: X-Mailer: Claws Mail 3.5.0 (GTK+ 2.14.4; i486-pc-linux-gnu) Mime-Version: 1.0 X-Karma: unknown: X-Spam-Score: 0.0 (/) X-Spam-Report: autolearn=disabled,none Subject: Re: LF: QRP WSPR beacon Content-Type: text/plain; charset=US-ASCII 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-IP: 193.82.116.20 Hello Andy, LF, I'm also monitoring for Andy's WSPR signal, by I think it's optimistic to hope for reception at this range, in daylight, of a -6dBm ERP transmission. I will leave it running unitl 20:30z, when I'll QSY for Jay's overnight tests. Cheers, John On Sat, 31 Jan 2009 13:25:57 +0000 Andy Talbot wrote: > I have a QRP WSPR Beacon going on the usual 503870Hz frequency. > RF power is 100mW which gives an an estimated ERP of -6dBm - needless > to say the reported power in the message is therefore wrong. > > Its operating at 100% duty cycle at the moment while the band is > quiet - if anyone has probs, just give a shout here and I'll drop the > rate. > > The WSPRnet database is showing Jim's copy of it at -29dB S/N, which > compares well with the transmission an hour earlier when I made some > antenna tuning tweaks and confirmed max power from the broadband PA > as 140 Watts. Jim's report on that was +2dB S/N. 31dB higher and > within 0.5dB of expected. > > Andy G4JNT > www.g4jnt.com