Return-Path: Received: (qmail 656 invoked from network); 13 Jul 2004 20:24:18 -0000 Received: from unknown (HELO ptb-spamcore02.plus.net) (192.168.71.3) by ptb-mailstore01.plus.net with SMTP; 13 Jul 2004 20:24:18 -0000 Received: from mailnull by ptb-spamcore02.plus.net with spamcore-l-b (Exim 4.32; FreeBSD) id 1BkTq9-000Ilw-3W for dave@picks.force9.co.uk; Tue, 13 Jul 2004 21:25:25 +0100 Received: from [192.168.67.1] (helo=ptb-mxcore01.plus.net) by ptb-spamcore02.plus.net with esmtp (Exim 4.32; FreeBSD) id 1BkTq9-000Ili-1F for dave@picks.force9.co.uk; Tue, 13 Jul 2004 21:25:25 +0100 Received: from post.thorcom.com ([193.82.116.20]) by ptb-mxcore01.plus.net with esmtp (Exim 4.30; FreeBSD) id 1BkTp2-000IjY-38 for dave@picks.force9.co.uk; Tue, 13 Jul 2004 20:24:16 +0000 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1BkToC-0002D3-Dq for rs_out_1@blacksheep.org; Tue, 13 Jul 2004 21:23:24 +0100 Received: from [193.82.116.30] (helo=relay.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1BkToC-0002Cu-23 for rsgb_lf_group@blacksheep.org; Tue, 13 Jul 2004 21:23:24 +0100 Received: from smtp08.wanadoo.nl ([194.134.35.149]) by relay.thorcom.net with esmtp (Exim 4.34) id 1BkTo8-0000ey-SX for rsgb_lf_group@blacksheep.org; Tue, 13 Jul 2004 21:23:24 +0100 Received: from [10.0.0.4] (mdt-17671.adsl.wanadoo.nl [81.69.148.113]) by smtp8.wanadoo.nl (Postfix) with ESMTP id 5DB055AF52 for ; Tue, 13 Jul 2004 22:23:29 +0200 (CEST) Message-ID: <40F444BF.5090307@wanadoo.nl> Date: Tue, 13 Jul 2004 22:23:27 +0200 From: Ko Versteeg User-Agent: Mozilla Thunderbird 0.6 (Windows/20040502) X-Accept-Language: en-us, en MIME-Version: 1.0 To: rsgb_lf_group@blacksheep.org References: <40F2CF45.30049.6CA6CC@localhost> In-Reply-To: <40F2CF45.30049.6CA6CC@localhost> X-Spam-Score: 0.0 (/) X-Spam-Report: autolearn=no, Subject: Re: LF: Receivers Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 8bit X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Status: No, hits=0.0 required=5.0 tests=none autolearn=no version=2.63 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 (v3.00) Mike Dennison wrote: >I am compiling a list of receivers and transceivers suitable >for 136kHz. I know most of the older radios already but >does anyone use a radio made in, say, the last five years >that they use sucessfully? If so, does it need an LF pre- >amp? Is the noise blanker any good on LF QRN and/or >Loran? Is a narrow filter fitted as standard? > >Your help would be appreciated. > >Thanks > >Mike, G3XDV >========== > > Hello Mike NRD 545: Good sensitivity down to only 100 kHz, for LF i use 20dB Att all the time. Noise blanker, 2 settings [Kill or Ruin] works too good so i never use it watching LF. In PSK31 or NAVTEX the NB seems to enhance the signal, too bad it does not allways work in CW. AGC settings are adjustable from 0.04 to 5.1 seconds and can be set to off also. 3 preset filters for cw 2.7K, 1K and 500 Hz and 10 Hz steps adjustable fm 10 Hz to 9.99Khz. Values differ when another mode is used but stay adjustable. PBS is +2.30 Khz and -2.30 Khz, a double one would be more usefull as on the TS-940. AGC discharge time, Bandwidth and PBS settings are displayed on a separate LDC, nice at night :-) 1 Hz tuning steps. Notch and a tracking notch wich tracks a carrier up and down for 10 Khz even if the VFO is used. 2 audio output sockets with same signals. Came with TCXO and is steady in 120 Sec Qrss right from power up until the paint comes off. Fine rig for LF, CW, Digimodes etc etc but it sounds terrible in SSB nomatter what speaker is used with it, Takes time to get used to and too bad the DSP can't be switched off. 73 Ko, NL9222