Re: [time-nuts] Tbolt issues

Warren wrote: The most important thing to get good Tbolt frequency performance is the antenna, with good sky view and correct location setting. Agreed. Nothing will go right if the antenna, sky view, and surveyed location are not as good as you can get them. The Tbolts damping setting is

[time-nuts] Lady Heather's Tbolt oscillator auto-tune function

Here's a little info on Lady Heather's oscillator autotune function for the Thunderbolt GPSDO: The autotune function tries to optimize the settings for the oscillator disciplining parameters, antenna signal mask angle, and the signal level amplitude mask beyond what the default setting (which

Re: [time-nuts] ke5fx.com - something's up

Try the wayback machine: This is an archive of many websites. 73 Glenn WB4UIV On 9/10/2016 6:48 PM, Nick Sayer via time-nuts wrote: I tried to look for Lady Heather docs today, but it appears like the ke5fx domain is… funky.

Re: [time-nuts] Tbolt issues

Bert wrote: Looks like we are not the only ones trying to improve frequency performance and hopefully some one will share settings. You are coming very late to the Tbolt party. There was a veritable blizzard of posts about optimizing Tbolt performance, which began maybe 10 or 11 years ago

Re: [time-nuts] ke5fx.com - something's up

Hmm. Gotta be some kind of DNS glitch, it's not due for renewal as far as I can see. I'll look into it, thanks. -- john, KE5FX Miles Design LLC > -Original Message- > From: time-nuts [mailto:time-nuts-boun...@febo.com] On Behalf Of Nick Sayer > via time-nuts > Sent: Saturday,

Re: [time-nuts] Tbolt issues

Bob wrote: The one thing that autotune seems to do well is to come up with the actual sensitivity of the OCXO you have. It depends on a few things to do this so it might go wrong. I’ve never seen it come up with the wrong number. It then appears to drop in a gain and damping that make more

[time-nuts] ke5fx.com - something's up

I tried to look for Lady Heather docs today, but it appears like the ke5fx domain is… funky. The name servers are NS1.PENDINGRENEWALDELETION.COM and there are other indications that maybe the domain lapsed…? ___ time-nuts mailing list --

Re: [time-nuts] Tbolt issues

Bert a) 1e-10 freq error, Sounds to me like you have a typical TBolt with near factory default setting. The most important thing to get good Tbolt frequency performance is the antenna, with good sky view and correct location setting. After that there are some 'basic' Tbolt setting and things

[time-nuts] FS: Z3801A

Fully functional (in use now). Has been upgraded to an Oncore VP GPS module (more sensitive than the original). I replaced several caps on the DC-DC board with low-ESR parts (it wasn't necessary, but I didn't like the look of some of them). Includes DC power supply, but no antenna. $300 OBO.

Re: [time-nuts] Tbolt issues

Charles would you mind sharing 1 second frequency data that you get out of the tbolt to get an idea what is possible. Looks like we are not the only ones trying to improve frequency performance and hopefully some one will share settings. Bert Kehren In a message dated 9/10/2016 6:42:17

Re: [time-nuts] Tbolt issues

Bert wrote: would you please share your settings, this is exactly what we are looking for. We are doing it by trial and error but your expertise will help greatly. Well, I spent the holiday weekend looking for the "safe place" where I recorded my final Tbolt tuning parameters -- without

Re: [time-nuts] Tbolt issues

Hi > On Sep 10, 2016, at 6:40 AM, Charles Steinmetz wrote: > > Bert wrote: > >> would you please share your settings, this is exactly what we are looking >> for. We are doing it by trial and error but your expertise will help greatly. > > Well, I spent the holiday

Re: [time-nuts] "Instantaneous frequency" [WAS: Tbolt issues]

Bill wrote: [lots and lots of snippage - the original message was posted on 9/2 for those who want to review it] we can also define waveforms where the frequency parameter is itself a function over time. Agreed. In these cases there obviously is an instantaneous frequency "Obviously"?