[time-nuts] Looking for FE-5680B oscillators

2013-11-28 Thread Skip Withrow
Just wondering if any time-nuts have a stash of FEI FE-5680B oscillators that they would like to get rid of at a reasonable price? These units are very similar to the FE-5680A except that they have 15-pin high-density D-sub connector (VGA style). Almost all these units on the surplus market

Re: [time-nuts] DIY QFH

2013-11-28 Thread quartz55
Well, I won't put attachments on any more. Anyhow, I did get some Pulse Antennas from mouser. W3011A, I think they're meant to be used with a patch type antenna, looking at the recommended circuit. But it didn't show any pattern with the design, but they were cheap enough so if I wanted to

Re: [time-nuts] DIY QFH

2013-11-28 Thread Jim Lux
On 11/27/13 8:08 AM, Chuck Harris wrote: Here is some Electrical Engineer pr0n of the Trimble TBolt standard antenna. -Chuck Harris Apparently spelling out the P word gets your message rejected. Is that a L1 only antenna? What's interesting is that this is NOT a crossed dipole, at least

[time-nuts] Simulation of oscillator noise

2013-11-28 Thread Wolfgang Wallner
Hello Time-Nuts community, I'm interested in the simulation of oscillator noise (especially in discrete event simulators). I came across this topic as part of the literature research for my master's thesis, and have to admit that I really underestimated how complex this topic is. In the past

Re: [time-nuts] DIY QFH

2013-11-28 Thread Attila Kinali
On Wed, 27 Nov 2013 04:02:53 -0800 Jim Lux jim...@earthlink.net wrote: [Crossed dipole antennas] I don't know how they do the phase quadrature.. do they make one dipole a bit longer and the other a bit shorter? Yes. Same principle as with patch antennas. Attila

Re: [time-nuts] Simulation of oscillator noise

2013-11-28 Thread Azelio Boriani
From an old time-nuts post (by Magnus): try these http://tycho.usno.navy.mil/ptti/1987/Vol%2019_19.pdf http://horology.jpl.nasa.gov/papers/FlfmSimPtti.pdf and here http://libra.msra.cn/Publication/50096626/a-new-time-domain-model-of-precise-clock-noise On Thu, Nov 28, 2013 at 10:35 AM, Wolfgang

Re: [time-nuts] Simulation of oscillator noise

2013-11-28 Thread Azelio Boriani
The link http://tycho.usno.navy.mil/ptti/1987/Vol%2019_19.pdf doesn't work, use instead: http://tycho.usno.navy.mil/ptti/1987papers/Vol%2019_19.pdf On Thu, Nov 28, 2013 at 2:03 PM, Azelio Boriani azelio.bori...@screen.it wrote: From an old time-nuts post (by Magnus): try these

Re: [time-nuts] Simulation of oscillator noise

2013-11-28 Thread Tom Van Baak
Wolfgang, There's a large list of papers at William Riley's site that should be of interest to you: http://www.wriley.com/ He also has copies of the NBS test data. Given you're working on a masters thesis you can probably qualify for a student discount on his Stable32 software; it includes the