Return-Path: Received: (qmail 29816 invoked from network); 5 Nov 2001 18:40:13 -0000 Received: from unknown (HELO warrior.services.quay.plus.net) (212.159.14.227) by excalibur-qfe1-smtp-plusnet.harl.plus.net with SMTP; 5 Nov 2001 18:40:13 -0000 Received: (qmail 6530 invoked from network); 5 Nov 2001 18:40:12 -0000 Received: from unknown (HELO post.thorcom.com) (212.172.148.70) by warrior.services.quay.plus.net with SMTP; 5 Nov 2001 18:40:12 -0000 Received: from majordom by post.thorcom.com with local (Exim 3.33 #2) id 160oV2-0001qg-00 for rsgb_lf_group-outgoing@blacksheep.org; Mon, 05 Nov 2001 18:29:32 +0000 Received: from mta5-rme.xtra.co.nz ([210.86.15.138]) by post.thorcom.com with esmtp (Exim 3.33 #2) id 160oV0-0001qb-00 for rsgb_lf_group@blacksheep.org; Mon, 05 Nov 2001 18:29:31 +0000 Received: from xtr743187 ([202.27.178.151]) by mta5-rme.xtra.co.nz with SMTP id <20011105182815.IKV15911.mta5-rme.xtra.co.nz@xtr743187> for ; Tue, 6 Nov 2001 07:28:15 +1300 Message-ID: <002901c16627$fb93a700$97b21bca@xtr743187> From: "Vernall" To: rsgb_lf_group@blacksheep.org 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> Subject: LF: Re: Re: spectrum 136kHz I2PHD/dj8wx Date: Tue, 6 Nov 2001 07:29:55 +1300 MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1; format=flowed Content-Transfer-Encoding: 8bit X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 5.00.2919.6600 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org X-Listname: rsgb_lf_group Sender: Alberto and others, > thanks for your message. > Yes, I had read that explanation on the reflector, but I am still puzzled, as I > live in a small village, and the local Telecom told me that ADSL will be > available here not sooner than at least 6 months. And when they say 6 months, > they mean not less than 12.... > I asked my neighbors, but nobody has an ISDN line here. Just plain old analog. > But ADSL and ISDN can be found in a nearby town, about 5 km from here. > Given that today all telephone lines are buried, I am a bit skeptical about the > possibility to receive the 17th harmonic of a signal passing in a buried line > five kilometers from here. But in my life I have learnt that often reality defies > intuition and reasoning... 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. I suggest you "have a listen" to your phone line, using a suitably rated audio isolation transformer (as per domestic modems) into your PC sound card, and see what Argo indicates around 136 kHz, and other multiples of 8 or 64 kbit/s. 73, Bob