Return-Path: Received: (qmail 8266 invoked from network); 28 Jan 2001 17:17:38 -0000 Received: from unknown (HELO murphys-inbound.servers.plus.net) (212.159.14.225) by 10.226.25.101 with SMTP; 28 Jan 2001 17:17:38 -0000 Received: (qmail 29011 invoked from network); 28 Jan 2001 17:21:10 -0000 Received: from unknown (HELO post.thorcom.com) (212.172.148.70) by murphys with SMTP; 28 Jan 2001 17:21:10 -0000 Received: from majordom by post.thorcom.com with local (Exim 3.16 #1) id 14MvPQ-0001AW-00 for rsgb_lf_group-outgoing@blacksheep.org; Sun, 28 Jan 2001 17:14:36 +0000 X-Priority: 3 Received: from d06lmsgate.uk.ibm.com ([195.212.29.1]) by post.thorcom.com with esmtp (Exim 3.16 #1) id 14MvPP-0001AO-00 for rsgb_lf_group@blacksheep.org; Sun, 28 Jan 2001 17:14:35 +0000 X-MSMail-Priority: Normal Received: from d06relay02.portsmouth.uk.ibm.com (d06relay02.portsmouth.uk.ibm.com [9.166.84.148]) by d06lmsgate.uk.ibm.COM (1.0.0) with ESMTP id QAA60446 for ; Sun, 28 Jan 2001 16:58:25 GMT Received: from usa.net (ss1.bld.socks.ibm.com [9.14.4.66]) by d06relay02.portsmouth.uk.ibm.com (8.8.8m3/NCO v4.95) with ESMTP id RAA196964 for ; Sun, 28 Jan 2001 17:13:43 GMT X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 Message-ID: <3A7452E3.3B7D6ADC@usa.net> Date: Sun, 28 Jan 2001 18:12:03 +0100 From: "Alberto di Bene" Organization: Undisclosed X-Mailer: Mozilla 4.76 [en] (Win95; U) X-Accept-Language: en MIME-Version: 1.0 To: rsgb_lf_group@blacksheep.org Subject: LF: Re: This and that References: <3A7246CB.FF3090A0@alg.demon.co.uk> <3A7322C1.A2927B65@usa.net> <3A73C58C.4B20F438@alg.demon.co.uk> Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 8bit Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org X-Listname: rsgb_lf_group Sender: Steve Rawlings wrote: > Hi Alberto - Greetings from Chepstow! > Hi Steve, greetings to you from Casirate, a small village in Northern Italy. > [snip] > So, there you have it. I am still puzzled: If QRSS only needs a > 1 Hz bandwidth, why do the 20 or so QRSS operators need a 2.1 kHz > segment from 135.7 to 137.8 kHz? > [snip] I will left to others to answer to this question. I am just (so far) an SWL on this band, so I am not entitled to judgements on the correctness of band allocation [snip] > (Of course, with the erosion > of the guard band 135.8 - 136.0, those with only average CW > filters have found that much of the lower part of the CW segment > has been effectively sterilised by the high power stations on > 135.95.) [snip] Here you seem, referring to average CW filters, to agree with my statement that mainly the fault lies in the receiver. With an ideal receiver (which of course doesn't exist), there would be no problems, provided that the sub-bands were adhered to. We need a project for an RX specifically designed for this band, with at least 110 dB of SFDR (or more...). This would endeth many of the arguments. > > Regards to all, > Steve GW4ALG 73 Alberto I2PHD