Return-Path: Received: from rly-ma08.mx.aol.com (rly-ma08.mail.aol.com [172.20.116.52]) by air-ma09.mail.aol.com (v121_r2.11) with ESMTP id MAILINMA093-8c348ae047114c; Thu, 21 Aug 2008 20:12:52 -0400 Received: from post.thorcom.com (post.thorcom.com [193.82.116.20]) by rly-ma08.mx.aol.com (v121_r2.11) with ESMTP id MAILRELAYINMA085-8c348ae047114c; Thu, 21 Aug 2008 20:12:35 -0400 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1KWKFx-0006Pk-AU for rs_out_1@blacksheep.org; Fri, 22 Aug 2008 01:11:57 +0100 Received: from [83.244.159.144] (helo=relay3.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1KWKFw-0006Pb-CY for rsgb_lf_group@blacksheep.org; Fri, 22 Aug 2008 01:11:56 +0100 Received: from mta21.charter.net ([216.33.127.81]) by relay3.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1KWKFt-0002Ml-Dh for rsgb_lf_group@blacksheep.org; Fri, 22 Aug 2008 01:11:56 +0100 Received: from aarprv04.charter.net ([10.20.200.74]) by mta21.charter.net (InterMail vM.7.08.03.00 201-2186-126-20070710) with ESMTP id <20080822001146.UBBS9229.mta21.charter.net@aarprv04.charter.net> for ; Thu, 21 Aug 2008 20:11:46 -0400 Received: from [192.168.0.3] (really [24.241.23.199]) by aarprv04.charter.net with ESMTP id <20080822001146.OSEU10008.aarprv04.charter.net@[192.168.0.3]> for ; Thu, 21 Aug 2008 20:11:46 -0400 Message-ID: <48AE0441.2090102@w1tag.com> Date: Thu, 21 Aug 2008 20:11:45 -0400 From: John Andrews User-Agent: Thunderbird 2.0.0.16 (Windows/20080708) MIME-Version: 1.0 To: rsgb_lf_group@blacksheep.org References: <281222.921.qm@web26004.mail.ukl.yahoo.com> <001301c901e6$917c2d30$2201a8c0@PC2> <731EB49F88B309428FFDDD2423F810E441C128@HERMES4.ds.leeds.ac.uk> <48AADCE5.7070602@virgin.net> <034D836CD37D497C80547813F78DE240@AGB> <48AB191F.2070100@w1tag.com> <2BD00AC139914C138F0FB6FE5FB00F4D@AGB> <48AD575F.3010204@w1tag.com> <1ED6E58E4A6A4E8E801AF303F0C61DE9@AGB> <48ADD53E.80000@w1tag.com> In-Reply-To: X-Chzlrs: 0 X-Spam-Score: 0.0 (/) X-Spam-Report: autolearn=disabled,none Subject: Re: LF: Keyboard Modes for 600 Meters 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-IP: 193.82.116.20 X-AOL-SCOLL-AUTHENTICATION: listenair ; SPF_helo : n X-AOL-SCOLL-AUTHENTICATION: listenair ; SPF_822_from : n X-Mailer: Unknown (No Version) Graham, > I don't think I got round to running those two, they are coded in > multipsk , but from experience 'wide' systems didn't appear to travel > very well on 500 . The systems that I listed are simple on/off change > state , which could be modulated by simple carrier frequency switching , We've had decent results with the MFSK stuff, much better than with any of the non error-corrected modes that run at reasonable speed for a chat. But a sound card and SSB exciter is needed unless you want a substantial DDS programming project. As you say, all of these modes were designed for HF lunchbox use with SSB and linearity assumed. John A.