Return-Path: Received: (qmail 23775 invoked from network); 4 Jan 2001 16:35:20 -0000 Received: from unknown (HELO warrior-inbound.servers.plus.net) (212.159.14.227) by 10.226.25.101 with SMTP; 4 Jan 2001 16:35:20 -0000 Received: (qmail 85 invoked from network); 4 Jan 2001 16:38:37 -0000 Received: from unknown (HELO post.thorcom.com) (212.172.148.70) by warrior with SMTP; 4 Jan 2001 16:38:37 -0000 Received: from majordom by post.thorcom.com with local (Exim 3.16 #1) id 14EDGn-0000Ko-00 for rsgb_lf_group-outgoing@blacksheep.org; Thu, 04 Jan 2001 16:29:41 +0000 X-Priority: 3 X-MSMail-Priority: Normal Received: from d06lmsgate-2.uk.ibm.com ([195.212.29.2]) by post.thorcom.com with esmtp (Exim 3.16 #1) id 14EDGj-0000Ke-00 for rsgb_lf_group@blacksheep.org; Thu, 04 Jan 2001 16:29:37 +0000 Received: from d06relay01.portsmouth.uk.ibm.com (d06relay01.portsmouth.uk.ibm.com [9.166.84.147]) by d06lmsgate-2.uk.ibm.com (1.0.0) with ESMTP id QAA72100 for ; Thu, 4 Jan 2001 16:14:48 GMT Received: from usa.net (ss1.bld.socks.ibm.com [9.14.4.66]) by d06relay01.portsmouth.uk.ibm.com (8.8.8m3/NCO v4.95) with ESMTP id QAA64522 for ; Thu, 4 Jan 2001 16:28:49 GMT X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 Message-ID: <3A54A4A3.3D7FDD64@usa.net> Date: Thu, 04 Jan 2001 17:28:19 +0100 From: "Alberto di Bene" Organization: Undisclosed X-Mailer: Mozilla 4.76 [en] (Win95; U) X-Accept-Language: en MIME-Version: 1.0 To: rsgb_lf_group@blacksheep.org Subject: Re: LF: Freq stability, cheap source of References: <65AECDF1F89AD411900400508BFC869F0D74E2@pdw-mail-1.dera.gov.uk> <003d01c0765e$2e2a9580$0a00a8c0@ThreeLakes.ca> 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: Larry Kayser wrote: > Greetings All: > > There is a very cheap source of very high stability reference available to > everyone. It is the 1 PPS from almost any second hand OEM level GPS > receiver. I have one here that cost $20 US$, about the size of what we once > [snip] Yes, about one year ago I was told that the Magellan OEM 5000 GPS unit had such a 1 PPS output and bought a couple of them, only to discover afterwards that no documentation is available on that old unit, and that most probably no 1 second pulses are to be found on it.... :-( If anyone reading this reflector has info on this Magellan GPS, please help me to decide whether to throw it away, or if it can be used for the purpose cited in the Larry's post. Thanks Alberto I2PHD