Return-Path: Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by mtain-md01.r1000.mx.aol.com (Internet Inbound) with ESMTP id AE5093800008B for ; Tue, 10 Jan 2012 15:47:43 -0500 (EST) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1RkhwM-0006cL-9v for rs_out_1@blacksheep.org; Tue, 10 Jan 2012 20:05:02 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1RkhwL-0006cC-SN for rsgb_lf_group@blacksheep.org; Tue, 10 Jan 2012 20:05:01 +0000 Received: from mail-iy0-f171.google.com ([209.85.210.171]) by relay1.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1RkhwI-0000xD-Iw for rsgb_lf_group@blacksheep.org; Tue, 10 Jan 2012 20:05:01 +0000 Received: by iabz21 with SMTP id z21so2135403iab.16 for ; Tue, 10 Jan 2012 12:04:49 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :content-type:content-transfer-encoding; bh=pR/lSzchecXz8Te15KbGj6xWNdhlX4nBf+efMqtdjfQ=; b=PK6kscT0Dxjk6rkSm3gzCM/FM3JBfjCVg8JnW8J+Ur/T3LEQU5HNIMj1Abe1er+vMl YuEQ1gTIh5VJ7dBaFqu2h6x6E3dJwHjb8MxYlNCfrHqEXLe1YGDnsFqvnhyfg+nCk5bA AgDDxiEMpDYy/z+9rJbzp0JdDY+pWt16outHQ= MIME-Version: 1.0 Received: by 10.50.219.234 with SMTP id pr10mr3792499igc.27.1326225889903; Tue, 10 Jan 2012 12:04:49 -0800 (PST) Received: by 10.231.12.140 with HTTP; Tue, 10 Jan 2012 12:04:49 -0800 (PST) In-Reply-To: <3BD3153722394C9E9F82E099417C1957@AGB> References: <3BD3153722394C9E9F82E099417C1957@AGB> Date: Tue, 10 Jan 2012 20:04:49 +0000 Message-ID: From: Andy Talbot To: rsgb_lf_group@blacksheep.org X-Spam-Score: 0.0 (/) X-Spam-Report: autolearn=disabled,none Subject: Re: LF: opera 137 beacon going Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable 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: 0:2:493399680:93952408 X-AOL-SCOLL-URL_COUNT: 0 X-AOL-SCOLL-AUTHENTICATION: mail_rly_antispam_dkim-m003.1 ; domain : gmail.com DKIM : pass x-aol-sid: 3039ac1d60554f0ca3ef01ed X-AOL-IP: 195.171.43.25 X-AOL-SPF: domain : blacksheep.org SPF : none 600 Watt of Rf to 7m high Tee with Gnd loss about 80 ohms. I reckon about -40dBi gain so call it a few tens of mW Andy On 10 January 2012 19:58, Graham wrote: > Reaching =A0Gary =A0with =A0 +7 dB =A0in hand , what =A0is the =A0carrier= =A0power ? > > Be =A0very interesting =A0to see =A0what =A0the s/n =A0would =A0be =A0fro= m MAL > over similar =A0range =A0and =A0similar =A0path , with =A0all =A0that =A0= wire out > should =A0be able to =A0catch =A0Andy's =A0beacon into the =A0+dB scale > > G.. > 18:49 136 G8IMR de G4WGT Op8 314 km -19 dB in Coppull, nr Preston > > -------------------------------------------------- > From: "Andy Talbot" > Sent: Tuesday, January 10, 2012 4:06 PM > To: > Subject: LF: opera 137 beacon going > >> Having had to modify a 137kHz source to be able to generate on-off >> keying, I'm transmitting a signal using 2.048s symbol mode on 137420Hz >> 33% duty cycle (for now) >> >> This is based around my PIC generator for the mode >> Details at =A0 http://www.g4jnt.com/PIC_Opera_Source.pdf =A0and >> http://www.g4jnt.com/OperaBeacon.zip >> >> As its an independent source, with no PC in the Tx chain - no IP >> packets will be sent to t'web showing the details >> >> and its definitely gettign out.... >> >> 15:46 136 G8IMR de F6CNI Op8 391 km -28 dB in 136 kHz dial nr Paris >> >> >> Andy >> G4JNT >> >