Re: [time-nuts] I thought GPS repeated every 12 hours (-2 minutes)

> Le 25 mai 2016 à 16:59, David a écrit : > > I was designed as a transmitter hunting antenna sacrificing size and > gain for minimum side lobes. I’ve got to see your selfie. "The power of accurate observation is commonly called cynicism by those who have not got

Re: [time-nuts] Maser 0.7 nsec jumps solved

In message , "Mike Monett" writes: >The wikipedia article states "To avoid magnetic inrush, only for >transformers with an air gap in the core, the inductive load needs >to be synchronously connected near a supply voltage peak." You ought to have

Re: [time-nuts] I thought GPS repeated every 12 hours (-2 minutes)

On Wed, 25 May 2016 09:59:33 -0500 David wrote: > I was designed as a transmitter hunting antenna sacrificing size and > gain for minimum side lobes. You can see a photo of it on the front > cover of October 1995 73 magazine. For those who are also wondering what it looks

Re: [time-nuts] Simple solution for disciplining OCXO with 1 PPS

Hi fellow time-nuts, sorry for keeping quiet after having dropped my question. I was busy travelling an since yesterday our booth at the IMS2016/MTT keeps me busy too. I will answer to the various comments as soon as I got some more quiet minutes. I look forward to see many time-nuts this

Re: [time-nuts] I thought GPS repeated every 12 hours (-2 minutes)

On Wed, 25 May 2016 19:33:37 +0200, you wrote: > >> Le 25 mai 2016 à 16:59, David a écrit : >> >> I was designed as a transmitter hunting antenna sacrificing size and >> gain for minimum side lobes. > >I’ve got to see your selfie. It was not a selfie. Joe Moell, K0OV,

Re: [time-nuts] HP5065A environmental sensitivities

Hi Corby, That was really what I was hoping for from the small Rb's too, but there appears to be other things at work with them. I had not really considered that they might be sealed, but it's something to look at. I had been thinking more about how it was fixed into the package and with what

Re: [time-nuts] Maser 0.7 nsec jumps solved

On Wed, May 25, 2016 at 9:59 AM, Mike Monett wrote: > >Am 23.05.2016 um 05:15 schrieb Jim Palfreyman: > >> As far as a remedy goes we are going to try a solid state relay that > only > >> switches on at 0V in the AC waveform. This should slow the inrush > current, >

Re: [time-nuts] Maser 0.7 nsec jumps solved

Am 25.05.2016 um 18:59 schrieb Mike Monett: This analysis shows switching at 0V is the best option. No, it doesn't. :-) First, the single inductor does not represent a transformer; the second inductor and the coupling declaration ( style: K1 L1 L2 0.99 or so) and the load are missing. The

[time-nuts] Commercial software defined radio for clock metrology

Hello, A recently published paper might be of interest to the time-nuts community. We studied how well an unmodified commercial software defined radio (SDR) device/firmware could serve in comparing high-performance oscillators and atomic clocks. Though we chose to study the USRP platform, the

Re: [time-nuts] Maser 0.7 nsec jumps solved

On Wed, May 25, 2016 at 12:59 PM, Mike Monett wrote: LTspice shows switching at 0V is the best point in time. ... Bzzzt! Your simulation is seriously flawed, and your conclusions are wrong. What you forgot, or may not have realized, is that SPICE's initial

Re: [time-nuts] I thought GPS repeated every 12 hours (-2 minutes)

Reminds me of the 1950's living in Wildwood, NJ. We had a TV antenna on the roof to pick up stations from Philadelphia - 80 miles away. When ever an airplane flew over you would see flutter and distorted sound! 73, Bill, WA2DVU Cape May -Original Message- From: time-nuts

Re: [time-nuts] Nuclear transition for time reference - Nature 5-May, 2016, vol 533

On Mon, 23 May 2016 11:49:37 -0500 David Witten wrote: > My knowledge in this area is superficial. But I wondered if anyone in this > group had a reaction to the 5-May issue of nature that includes a 'News and > Views' piece and a formal article reporting the detection by

Re: [time-nuts] Simple solution for disciplining OCXO with 1 PPS

From: Wes A cleaver design, but the OP wanted 1pps. I have the Leo Bodnar GPSDO. It too is a nice frequency standard, but it doesn't know what time it is. = This box can do either 10 MHz or 1 PPS. http://leontp.com/ "Coming soon" Cheers, David --

Re: [time-nuts] I thought GPS repeated every 12 hours (-2 minutes)

Hi Multipath on GPS normally requires a couple of things: 1) The satellite you are trying to lock on to needs to be obscured. Being below the local horizon is one normal way for this to happen. 2) The satellite signal needs to be reflected off of something that does not put in enough

Re: [time-nuts] I thought GPS repeated every 12 hours (-2 minutes)

Still do, to this day! With my OTA HD TV and living in the vicinity of ABIA in Austin, TX. When the wind is out of the north, and they take off to the north darn planes! Don N5CID -Original

Re: [time-nuts] I thought GPS repeated every 12 hours (-2 minutes)

On 5/24/2016 7:26 PM, David wrote The 2 meter directional antenna I ultimately designed was good enough to not only track airlines by their reflected RF, but it could see reflections and shadows from nearby objects like street lights and trees which ultimately limited outside performance

[time-nuts] Operational experience with NTP's symmetric mode?

As part of the IETF Network Time Security (NTS) effort, it would be helpful to understand the importance of NTP's symmetric peering mode. Can folks on this list please share their experience with NTP's symmetric mode? Do you use it, and if so why (or why not), and if so in what operational

Re: [time-nuts] I thought GPS repeated every 12 hours (-2 minutes)

On Wed, 25 May 2016 06:34:46 -0700, you wrote: >On 5/24/2016 7:26 PM, David wrote >>The 2 meter >> directional antenna I ultimately designed was good enough to not only >> track airlines by their reflected RF, but it could see reflections and >> shadows from nearby objects like street lights

Re: [time-nuts] Maser 0.7 nsec jumps solved

>Am 23.05.2016 um 05:15 schrieb Jim Palfreyman: >> As far as a remedy goes we are going to try a solid state relay that only >> switches on at 0V in the AC waveform. This should slow the inrush current, >> and hopefully the magnetic impulse. > >In the context of transformers and motors, switching