Return-Path: Received: (qmail 17711 invoked from network); 19 Oct 2002 08:28:12 -0000 Content-Transfer-Encoding: 8bit Received: from marstons.services.quay.plus.net (212.159.14.223) by mailstore with SMTP; 19 Oct 2002 08:28:12 -0000 X-Priority: 3 X-MSMail-Priority: Normal Received: (qmail 3839 invoked by uid 10001); 19 Oct 2002 09:31:55 -0000 Received: from post.thorcom.com (193.82.116.70) by marstons.services.quay.plus.net with SMTP; 19 Oct 2002 09:31:55 -0000 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 Received: from majordom by post.thorcom.com with local (Exim 4.10) id 182ovz-0001Ri-00 for rsgb_lf_group-outgoing@blacksheep.org; Sat, 19 Oct 2002 09:26:11 +0100 Received: from [195.22.0.29] (helo=jubilee.esoterica.pt) by post.thorcom.com with esmtp (Exim 4.10) id 182ovz-0001RZ-00 for rsgb_lf_group@blacksheep.org; Sat, 19 Oct 2002 09:26:11 +0100 Received: from slave-6 (por252.esoterica.pt [195.22.5.252]) by jubilee.esoterica.pt (8.12.3/8.11.6) with SMTP id g9J8KGdn007166 for ; Sat, 19 Oct 2002 09:20:17 +0100 Message-ID: <3.0.5.32.20021019082939.007a1a60@pop.vianw.pt> X-Sender: brian@pop.vianw.pt X-Mailer: QUALCOMM Windows Eudora Light Version 3.0.5 (32) Date: Sat, 19 Oct 2002 08:29:39 +0100 To: rsgb_lf_group@blacksheep.org From: "Brian Rogerson" In-reply-to: MIME-Version: 1.0 Subject: Re: LF: GPS modules - BG Micro Content-Type: text/plain; charset=us-ascii; format=flowed X-Spam-Status: No, hits=0.0 required=5.0tests=IN_REP_TO,SPAM_PHRASE_00_01version=2.42 Sender: Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org X-Listname: rsgb_lf_group Further to and the other approach: Arnie at arnies@mindspring.com is selling Magellan active GPS antennas at $8 and postage was I think $7-70. Has about 12ft of coax and BNC which I extended by another 12ft with RG58. Works fine with the HP Z3801a. This only tracks six satallites but "what a machine" for those who do not want to built or prefer to "swing the bucks" in the words of Jay, W1VD. The Z3816a I think is the 8 satellite version but I have only seen three of those so far and they were expensive. Extensive information on www.realhamradio.com I have built a frequency reference using a Racal Dana 5MHz ovened oscillator and now watch this and the 10MHz output from the HP on 0.1uS/cm on the scope. The HP has been running two weeks and now predicts remaining within 2.4uS during the initial 24 hours of losing GPS lock. 73, Brian At 08:23 19/10/2002 +0100, you wrote: >Further to Andy, G4JNT's talk at the LF Forum (RSGB HF COnvention) last >weekend, and his article in RadCom, Frank, K0BRA, mentioned a cheap source >of surplus Motorola ACS1397 8 Channel GPS modules from BG Micros >(http://www.bgmicro.com). > >Anyone wanting to build a GPS locked frequency source may be interested to >know that the modules are advertised at $US14.95 and arrived here in the UK >three days after ordering over the Internet. The only snag now is to get an >active aerial, or some work-around - presumably a circularly polarised >aerial with a MAT device - and an OSX connector. Grateful for helpful >suggestions on the latter. > >73 John, G3WKL > > > >