From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from snark.thyrsus.com (static-71-162-243-5.phlapa.fios.verizon.net [71.162.243.5]) by huchra.bufferbloat.net (Postfix) with ESMTP id 44422200627 for ; Mon, 12 Mar 2012 15:06:39 -0700 (PDT) Received: by snark.thyrsus.com (Postfix, from userid 1000) id 3028D40617; Mon, 12 Mar 2012 18:06:23 -0400 (EDT) Date: Mon, 12 Mar 2012 18:06:23 -0400 From: "Eric S. Raymond" To: Dave Taht Message-ID: <20120312220623.GB18256@thyrsus.com> References: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: Organization: Eric Conspiracy Secret Labs X-Eric-Conspiracy: There is no conspiracy User-Agent: Mutt/1.5.21 (2010-09-15) Cc: thumbgps-devel@lists.bufferbloat.net Subject: Re: [Thumbgps-devel] the serial alternative/radio noise X-BeenThere: thumbgps-devel@lists.bufferbloat.net X-Mailman-Version: 2.1.13 Precedence: list Reply-To: esr@thyrsus.com List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 12 Mar 2012 22:06:39 -0000 Dave Taht : > I AM curious if there is one of the gps boards we've looked at than > can 'just fit' on this header. Or, for that matter, a RTC. How often do I have to sing the "this kind of customization won't scale" song? > Now, I actually brought this up because in looking at this I realized > anew what a huge radiator of various forms of electronic noise this > is. - 2.4ghz and 5.x ghz radios, and a variety of possible waveforms > from the cpu - and I'm curious as to what extent gps is affected by > these frequencies. You and I have observational evidence that it's not an issue even for low-end, poorly-shielded hardware, -- Eric S. Raymond