Envelope-to: dave@picks.force9.co.uk Delivery-date: Sat, 23 Apr 2005 18:08:21 +0100 Received: from pih-spamcore04.plus.net ([192.168.71.8]) by pih-mxcore10.plus.net with esmtp (PlusNet MXCore v1.0) id 1DPO7B-0007V7-J6 for dave@picks.force9.co.uk; Sat, 23 Apr 2005 18:08:21 +0100 Received: from Debian-exim by pih-spamcore04.plus.net with spam-scanned (Exim 4.50) id 1DPO7A-0003bk-TD for dave@picks.force9.co.uk; Sat, 23 Apr 2005 18:08:21 +0100 Received: from [192.168.101.74] (helo=pih-mxcore08.plus.net) by pih-spamcore04.plus.net with esmtp (Exim 4.50) id 1DPO7A-0003bh-Qy for dave@picks.force9.co.uk; Sat, 23 Apr 2005 18:08:20 +0100 Received: from post.thorcom.com ([193.82.116.20]) by pih-mxcore08.plus.net with esmtp (PlusNet MXCore v1.0) id 1DPO7A-0003LC-Lp for dave@picks.force9.co.uk; Sat, 23 Apr 2005 18:08:20 +0100 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1DPO6f-0008HN-BB for rs_out_1@blacksheep.org; Sat, 23 Apr 2005 18:07:49 +0100 Received: from [193.82.116.30] (helo=relay.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1DPO6e-0008HE-Qv for rsgb_lf_group@blacksheep.org; Sat, 23 Apr 2005 18:07:48 +0100 Received: from imo-m23.mx.aol.com ([64.12.137.4]) by relay.thorcom.net with esmtp (Exim 4.43) id 1DPO6d-0006Tr-9A for rsgb_lf_group@blacksheep.org; Sat, 23 Apr 2005 18:07:48 +0100 Received: from MarkusVester@aol.com by imo-m23.mx.aol.com (mail_out_v38.7.) id l.6.43a9c06c (4418) for ; Sat, 23 Apr 2005 13:07:30 -0400 (EDT) From: MarkusVester@aol.com Message-ID: <6.43a9c06c.2f9bdad1@aol.com> Date: Sat, 23 Apr 2005 13:07:29 EDT To: rsgb_lf_group@blacksheep.org MIME-Version: 1.0 X-Mailer: 8.0 for Windows sub 6104 X-SPF-Result: relay.thorcom.net: domain of aol.com designates 64.12.137.4 as permitted sender Subject: Re: LF: WOLF Tonight Content-Type: text/html; charset=windows-1252 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-Spam-Filtered: by PlusNet SpamCORE (v4.00s) Content-transfer-encoding: 8bit Hi Mike, Wolf and LF,

we0h@genesiswireless.us wrote:

I wonder if those Australia and New Zealand stations can try receiving with GUI WOLF? Seems the new WOLF is kicking QRSS's ass =-O

Mike

I'm not sure, Hartmut has been reading XES excellently in various flavours of narrowband modulation most nights. I think it depends on what you want to do. In the ZL tests, the primary goal up to now was to show that some signal energy is actually making it through. For this purpose, a single carrier or slow QRSS/DFCW dashes are hard to beat. The problem with spread-spectrum modulation like WOLF is that a weak signal is completely invisible in a spectrogram, which implies that the frequency has to be known a priori, and only one signal can be decoded at a time.

The situation becomes completely different when we want convey a significant amount of information, especially in conditions where the SNR varies over time. Here the decoding, weighting and synchronizing "brains" of WOLF may well make it far superior to human demodulation or straight PSK.

I wonder whether it would make any sense to give WOLF a small carrier component, by intentionally unbalancing the number of zeros and ones in the synchronizing bitstream?

dl4yhf@freenet.de wrote:

and a few goodies like an automated RX / TX
control which can "answer" a call when a pre-defined string has been
received.

Cool. Perhaps you could let the program select one of several stored answers depending on the received text, then we wouldn't have to stay up all night for those TA QSO's ;-))

73 and a nice weekend to all

Markus, DF6NM