Return-Path: Received: (qmail 7022 invoked from network); 6 Nov 2001 15:21:33 -0000 Received: from unknown (HELO warrior.services.quay.plus.net) (212.159.14.227) by excalibur.plus.net with SMTP; 6 Nov 2001 15:21:33 -0000 X-Priority: 3 X-MSMail-Priority: Normal Received: (qmail 21807 invoked from network); 6 Nov 2001 15:21:29 -0000 Received: from unknown (HELO post.thorcom.com) (212.172.148.70) by warrior.services.quay.plus.net with SMTP; 6 Nov 2001 15:21:29 -0000 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 Received: from majordom by post.thorcom.com with local (Exim 3.33 #2) id 1617rB-0005RV-00 for rsgb_lf_group-outgoing@blacksheep.org; Tue, 06 Nov 2001 15:09:41 +0000 Received: from e22.nc.us.ibm.com ([32.97.136.228]) by post.thorcom.com with esmtp (Exim 3.33 #2) id 1617r9-0005RQ-00 for rsgb_lf_group@blacksheep.org; Tue, 06 Nov 2001 15:09:40 +0000 Received: from southrelay01.raleigh.ibm.com (southrelay01.raleigh.ibm.com [9.37.3.208]) by e22.nc.us.ibm.com (8.9.3/8.9.3) with ESMTP id JAA10260 for ; Tue, 6 Nov 2001 09:06:18 -0600 Received: from usa.net (ss6.bld.socks.ibm.com [9.14.4.71]) by southrelay01.raleigh.ibm.com (8.11.1m3/NCO v5.00) with ESMTP id fA6F7Z836656 for ; Tue, 6 Nov 2001 10:07:36 -0500 Message-ID: <3BE7FC91.6F2DFD56@usa.net> Date: Tue, 06 Nov 2001 16:06:57 +0100 From: "Alberto di Bene" X-Mailer: Mozilla 4.78 [en] (Windows NT 5.0; U) X-Accept-Language: en MIME-Version: 1.0 To: rsgb_lf_group@blacksheep.org Subject: LF: Re: spectrum 136kHz I2PHD/dj8wx References: <200111010724_MC3-414D-935B@compuserve.com> <001101c162d8$6ef36f30$0400000a@parissn2> <3BE31FFF.C0788E6E@usa.net> <160JaP-1LPangC@fwd02.sul.t-online.com> <3BE55DBA.BD1FB024@usa.net> <003101c1655e$a949c5c0$1bb51bca@xtr743187> <3BE66466.F1BDFE8D@usa.net> <002901c16627$fb93a700$97b21bca@xtr743187> 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: Vernall wrote: > [...] > Digital networking has been around for some 20 years, with A/D and D/A > conversion at the exchange. Interconnections between exchanges and the > "network" are entirely with digital format, with data rates of 2 to 156 > Mbit/s. Subscribers still think they have an analogue connection, but it is > only as far as the exchange. The likes of ADSL or ISDN bring digital format > into the subcriber loop, but that is additional to what I was mentioning in > my earlier comments. > [...] Bob Vernall, Bob Riese and the group, thanks for the further explanations, which make a lot of sense. I will pry my nose in my telephone line, to discover what 'horribilis' ghosts are lurking there, hidden behind that reassuring and innocent tut-tut. I will lightly couple the line with my new receiver, a JRC NRD-525, which, BTW, seems to be very sensitive on LF, and should something unexpected show up, it will be promptly captured and posted here. 73 Alberto I2PHD