[time-nuts] GPSDO Alternatives

DaveH info at blackmountainforge.com
Fri Dec 7 03:37:10 UTC 2012


If you had an Ikepod, I might be interested.

http://www.ablogtowatch.com/ikepod-hourglass-time-for-art/

http://www.hodinkee.com/blog/2011/3/29/the-ikepod-hourglass-by-marc-newson-q
uite-possibly-the-coole.html

http://www.ikepod.com/

Dave 

> -----Original Message-----
> From: time-nuts-bounces at febo.com 
> [mailto:time-nuts-bounces at febo.com] On Behalf Of Bob Camp
> Sent: Thursday, December 06, 2012 18:23
> To: Discussion of precise time and frequency measurement
> Subject: Re: [time-nuts] GPSDO Alternatives
> 
> Hi
> 
> Here's another way to look at this:
> 
> An hourglass full of sand (with some attention) and a cesium 
> standard are both ways to answer the question "what time is 
> it?". Let's say you need a new $40,000 tube replacement in 
> your 5371 and management asks "what else can we do?".  An 
> hour glass  is indeed a "something else we can do". They both 
> deliver an answer to the time of day question. Without 
> defining what you actually *need* to do, they are both valid 
> approaches. 
> 
> The problem comes when you look at the $40,000 repair charge 
> and decide that building an hour glass is a lot cheaper. 
> While that's true, it's far from the whole story. One way to 
> quickly work some of this out is a simple swap proposition. 
> Would anybody on the list trade their (working) cesium for my 
> (working) hourglass? I'll pay shipping..
> 
> Bob
> 
> On Dec 6, 2012, at 9:03 PM, Mark Sims <holrum at hotmail.com> wrote:
> 
> > 
> > I think only TIMER2 on the AVR has the clk/4 limitation.   
> The other timers can count at full speed.    I know that I 
> have counted at 8-12 MHz before...
> > 
> > 		 	   		  
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