Return-Path: Received: (qmail 11508 invoked from network); 27 Jun 2001 20:16:32 -0000 Received: from unknown (HELO murphys-inbound.servers.plus.net) (212.159.14.225) by excalibur.plus.net with SMTP; 27 Jun 2001 20:16:32 -0000 Received: (qmail 19126 invoked from network); 27 Jun 2001 20:15:20 -0000 Received: from unknown (HELO post.thorcom.com) (212.172.148.70) by murphys with SMTP; 27 Jun 2001 20:15:20 -0000 X-Priority: 3 Received: from majordom by post.thorcom.com with local (Exim 3.16 #2) id 15FLdP-0006qx-00 for rsgb_lf_group-outgoing@blacksheep.org; Wed, 27 Jun 2001 21:09:59 +0100 X-MSMail-Priority: Normal Received: from finch-post-10.mail.demon.net ([194.217.242.38]) by post.thorcom.com with esmtp (Exim 3.16 #2) id 15FLdO-0006qs-00 for rsgb_lf_group@blacksheep.org; Wed, 27 Jun 2001 21:09:58 +0100 Received: from alg.demon.co.uk ([194.222.171.80]) by finch-post-10.mail.demon.net with esmtp (Exim 2.12 #1) id 15FLcS-000LOJ-0A for rsgb_lf_group@blacksheep.org; Wed, 27 Jun 2001 20:09:01 +0000 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 Message-ID: <3B3A3EAC.EFB6008C@alg.demon.co.uk> Date: Wed, 27 Jun 2001 21:14:36 +0100 From: "Steve Rawlings" X-Mailer: Mozilla 4.6 [en-gb]C-CCK-MCD NetscapeOnline.co.uk (Win98; I) X-Accept-Language: en-GB,en MIME-Version: 1.0 To: rsgb_lf_group@blacksheep.org Subject: Re: LF: freq: monitor ?? References: <005d01c0fe76$e6a457e0$ad2c1bd4@rci> <3B397DCB.F87B6FD3@alg.demon.co.uk> <000601c0feee$ef663ba0$0100a8c0@home> 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: Dave G3YXM wrote: > Pascal, I would recommend building a TX with at least 200W output to begin > with. Once you have made a few contacts you can improve the antenna etc. and > then try QRP. I think you will be disappointed if you start with only 5W. > Steve has been improving his station for years before he tried his QRP > experiment and he has the advantage of quite a few stations about 100km away > to give reports. It is true that QRP might result in disappointment - although this probably depends upon expectations. However, my first tests on 136 kHz were actually conducted using quite low power. (I completed my first 136 kHz CW QSO with Graham G3XTZ over a distance of 157 km using 15 watts RF. At the time, I was using a very poor single-turn loop antenna: tuned by very lossy capacitors; and fed by a very lossy balun. But it was a start. For me, QRO and better antennas came later.) Although I would not want to mislead people into thinking that they can work all around Europe with low power CW on 136 kHz, I am concerned that would-be experimenters could be discouraged if they are told repeatedly that they need a computer; DSP; a 50 Hz IF filter; and a QRO TX before starting their journey on LF. Instead, I think that it is important to encourage newcomers to _begin_ their LF journey - even if their first excursion only results in a tuned antenna - and a SWL report from 10 km across town! For some experimenters, this might be enough success to hasten their journey toward QRO, and better antennas. Regards to all, Steve GW4ALG