Return-Path: Received: from mtain-mg08.r1000.mx.aol.com (mtain-mg08.r1000.mx.aol.com [172.29.96.208]) by air-ma02.mail.aol.com (v129.4) with ESMTP id MAILINMA024-b4f64c5293c12fc; Fri, 30 Jul 2010 04:56:33 -0400 Received: from post.thorcom.com (post.thorcom.com [193.82.116.20]) by mtain-mg08.r1000.mx.aol.com (Internet Inbound) with ESMTP id 095EA380000A0; Fri, 30 Jul 2010 04:56:30 -0400 (EDT) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1OelMt-0005HI-Vk for rs_out_1@blacksheep.org; Fri, 30 Jul 2010 09:55:03 +0100 Received: from [193.82.116.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1OelMs-0005H9-6n for rsgb_lf_group@blacksheep.org; Fri, 30 Jul 2010 09:55:02 +0100 Received: from cmsout01.mbox.net ([165.212.64.31]) by relay1.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1OelMr-0006FO-3s for rsgb_lf_group@blacksheep.org; Fri, 30 Jul 2010 09:55:02 +0100 Received: from cmsout01.mbox.net (cmsout01-lo [127.0.0.1]) by cmsout01.mbox.net (Postfix) with ESMTP id 6AF812ACA17 for ; Fri, 30 Jul 2010 08:54:53 +0000 (GMT) Received: from cmsapps01.cms.usa.net [165.212.11.136] by cmsout01.mbox.net via smtad (C8.MAIN.3.61T) with ESMTP id XID813ogdi325082X01; Fri, 30 Jul 2010 08:54:53 -0000 X-USANET-Source: 165.212.11.136 IN dibene@usa.net cmsapps01.cms.usa.net X-USANET-MsgId: XID813ogdi325082X01 Received: from [192.168.1.3] [151.47.216.170] by cmsapps01.cms.usa.net (ESMTPA/dibene@usa.net) via mtad (C8.MAIN.3.65C) with ESMTPA id 108ogdi3Y1968M36; Fri, 30 Jul 2010 08:54:50 -0000 X-USANET-Auth: 151.47.216.170 AUTH dibene@usa.net [192.168.1.3] Message-ID: <4C529358.5060505@usa.net> Date: Fri, 30 Jul 2010 10:54:48 +0200 From: Alberto di Bene User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.1.11) Gecko/20100711 Thunderbird/3.0.6 MIME-Version: 1.0 To: rsgb_lf_group@blacksheep.org References:

<4C51FA69.1030202@iup.uni-heidelberg.de> In-Reply-To: X-Enigmail-Version: 1.0.1 Z-USANET-MsgId: XID108ogdi3z1968X36 X-Spam-Score: 1.4 (+) X-Spam-Report: autolearn=disabled,HTML_MESSAGE=0.001,RATWARE_GECKO_BUILD=1.426 Subject: Re: LF: Digital modes comparison Content-Type: multipart/alternative; boundary="------------060401000005010503060106" X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: * X-Spam-Status: No, hits=1.4 required=5.0 tests=HTML_30_40,HTML_MESSAGE, HTML_TITLE_EMPTY 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-sid: 3039ac1d60d04c5293be4d0e X-AOL-IP: 193.82.116.20 X-Mailer: Unknown (No Version) --------------060401000005010503060106 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit On 7/30/2010 9:17 AM, Andy Talbot wrote: > /Try WSPR at 6Hz bandwidth or JT4A at less that 20Hz. They are both > MSFK constant envelope schemes./ Or maybe Jason, with its 6 speeds (Slow, Normal, Fast, each of them in Normal or Turbo mode). Just a few Hz of band occupied, single tone FSK, no need for linear amps. 73 Alberto I2PHD --------------060401000005010503060106 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit On 7/30/2010 9:17 AM, Andy Talbot wrote:

Try WSPR at 6Hz bandwidth or JT4A at less that 20Hz. They are both MSFK constant envelope schemes.

Or maybe Jason, with its 6 speeds (Slow, Normal, Fast, each of them in Normal or Turbo mode).
Just a few Hz of band occupied, single tone FSK, no need for linear amps.

73 Alberto I2PHD

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