Re: [Elecraft] Remote Operating Time Sync

-requ...@mailman.qth.net wrote: > Subject: Re: [Elecraft] Remote Operating Time Sync > Message-ID: <f6ff3d12-1183-af7d-dcdc-b6f2626d1...@elecraft.com> > Content-Type: text/plain; charset=utf-8; format=flowed > > Let's wind this down now and end the thread. > > Lots of good

Re: [Elecraft] Remote Operating Time Sync

:34, elecraft-requ...@mailman.qth.net wrote: > Subject: [Elecraft] Remote Operating Time Sync > Message-ID: <34bc96f6211f96522da09cad75bfcc41.squir...@www11.qth.com> > Content-Type: text/plain;charset=utf-8 > > Why is accurate time important with these

Re: [Elecraft] Remote Operating Time Sync

Date: Fri, 16 Jun 2017 10:36:00 -0400 From: "j...@kk9a.com" <j...@kk9a.com> To: elecraft@mailman.qth.net Subject: [Elecraft] Remote Operating Time Sync Message-ID: <34bc96f6211f96522da09cad75bfcc41.squir...@www11.qth.com> Content-Type: text/plain;charset=utf-8 Why is a

Re: [Elecraft] Remote Operating Time Sync

Let's wind this down now and end the thread. Lots of good info, but its way exceeding the OT posting limit of 5-10. PLEASE self-moderate on threads as they get longer and take extended discussions off-list to direct email after 5-10 posts to relieve email overload for others. 73, Eric

Re: [Elecraft] Remote Operating Time Sync

Excellent While the ARRL Arduino project may also work, I’m a lot more familiar with the RPi, as I have a model 3 running here at home for my data QSOs with the KX3. As I mentioned in my original post, the need is for something I can take with me out in the field, so I’d also need to

Re: [Elecraft] Remote Operating Time Sync

On Fri,6/16/2017 7:36 AM, j...@kk9a.com wrote: Why is accurate time important with these modes? It's not important with all of them, but some, like JT65 and JT9, that use very strong error correction use algorithms that are somehow linked to start times. Other modes like MSK144 designed for

[Elecraft] Remote Operating Time Sync

Why is accurate time important with these modes? John KK9A On Thu,6/15/2017 11:59 AM, Matthew George wrote: > The jt modes will be fine even if you are a second or two off. __ Elecraft mailing list Home:

Re: [Elecraft] Remote Operating Time Sync

Give in to the dark side... you know it will feel so good to KNOW your frequency is accurate to sub-sub-sub Hertz level, your time reference is sub-nanosecond, and every clock in your life are all the same within a microsecond. LOL!!! __ Clay Autery, KY5G On 6/16/2017 5:25

Re: [Elecraft] Remote Operating Time Sync

to know. Thanks to Dave GM8ARV 73. Dave G0WBX On 16/06/17 00:48, elecraft-requ...@mailman.qth.net wrote: > Subject: Re: [Elecraft] Remote Operating Time Sync > Message-ID: <2f7465e1-5e3a-4733-8201-b016cdb1d...@me.com> > Content-Type: text/plain; charset=utf-8 &g

Re: [Elecraft] Remote Operating Time Sync

bo.com/cgi-bin/mailman/listinfo/time-nuts 73. Dave G0WBX. On 16/06/17 00:48, elecraft-requ...@mailman.qth.net wrote: > Subject: Re: [Elecraft] Remote Operating Time Sync > Message-ID: <9a61e777-f744-4ba2-8007-b43c95c62...@wunderwood.org> > Content-Type: text/plain; charset=u

Re: [Elecraft] Remote Operating Time Sync

Interesting, but don't see a way to feed/sync time with either a computer or the radio... __ Clay Autery, KY5G (318) 518-1389 On 6/15/2017 4:22 PM, Peter Pauly wrote: > I bought this for getting the time from GPS satelites while operating > remote...it's only about an inch

Re: [Elecraft] Remote Operating Time Sync

Personally, I think you'd be better served using Raspberry Pi approach. See the website I put down in my other post... Nah, here it is again... Do yourself a favor and read this guy's site... http://www.satsignal.eu/ntp/Raspberry-Pi-NTP.html __ Clay Autery, KY5G On

Re: [Elecraft] Remote Operating Time Sync

Yep... Build yourself a tiny little Stratun-1 NTP server using Raspberry Pi and a GPS receiver... Ideas: http://www.satsignal.eu/ntp/Raspberry-Pi-NTP.html __ Clay Autery, KY5G On 6/15/2017 2:12 PM, Marvin Wheeler wrote: > Jim: > > > > I would suggest a device that syncs

Re: [Elecraft] Remote Operating Time Sync

I should have mentioned that there is an obvious way to sync your clock for JT mode operation... per the spec: The JT65 protocol states that a transmission will begin at precisely 1 second into a new minute and end 46.811 seconds later. So if you have no time source and if you can't hear WWV and

Re: [Elecraft] Remote Operating Time Sync

Jim, it's all a matter of how long the JT software on the receive side / transmit side is written implemented. It's simply a window where your software is listening, there is nothing going on then then when to start listening and when to stop listening / when to start transmitting and when to

Re: [Elecraft] Remote Operating Time Sync

I bought this for getting the time from GPS satelites while operating remote...it's only about an inch wide and has a time display: https://www.tindie.com/products/PhoenixCNC/olediuno-gps-cube/ On Thu, Jun 15, 2017 at 5:14 PM, Josh wrote: > I just set this up at K6QXY's

Re: [Elecraft] Remote Operating Time Sync

I just set this up at K6QXY's place and it worked great. Accuracy is much better than what's required for JT65. We got a GlobalSat BR-355-S4 USB GPS receiver ($30) and a $20 software package from visualgps.net for Windows. I don't know of a MacOS version, but haven't looked. I expected to

Re: [Elecraft] Remote Operating Time Sync

Folks, thanks for the ideas! Tethering to my iPhone would work IF there was cell service. In many parts of Mindanao where we may go, the cell service is either spotty or nonexistent, so I would not want to rely on that. Also, WWV/WWVB/WWVH reception is not guaranteed. When I was there in April,

Re: [Elecraft] Remote Operating Time Sync

Makes sense. Originally written for EME, that transit time is about 2.7 seconds if my math is close... 2*250K miles/(186k/s)... plus some processing moments, a few ms for amp relays. A larger window would be problematic. Rick wa6nhc/7 On 6/15/2017 12:28 PM, Jim Brown wrote: On

Re: [Elecraft] Remote Operating Time Sync

I have found myself in this situation. WSJT-X shows absolute time differences between your clock and remote stations. I takes me a little fiddling but I found I can adjust my computer clock manually to get the WSJT-X reported time differences down to less than a second. No Internet or external

Re: [Elecraft] Remote Operating Time Sync

On Thu,6/15/2017 11:59 AM, Matthew George wrote: The jt modes will be fine even if you are a second or two off. Two seconds is stretching it. I've seen very strong JT65 signals that don't decode with a time error of 1.7 sec! 73, Jim K9YC

[Elecraft] Remote Operating Time Sync

Jim: I would suggest a device that syncs with the gps system. I think it would be far more reliable to receive a signal than one from WWV with propagation the way it is. --- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus

Re: [Elecraft] Remote Operating Time Sync

Tune in to wwv and synchronize your clock. The jt modes will be fine even if you are a second or two off. Or get a gps and synch to the gps clock via nema. Use google and search on all your options. You could setup nptd on your mac and use a pps signal from a gps too. Max Ng7m -- Matthew

Re: [Elecraft] Remote Operating Time Sync

Can you get internet by tethering to your phone? If so, the computer should sync with NTP pretty quickly, then hold to within a second while you are operating. You might be able to force a sync by opening the Date & Time control panel in System Preferences. MacOS uses NTP by default. If that

[Elecraft] Remote Operating Time Sync

I have a MacBook Pro Retina Display running Sierra 10.12.5 that I use with my KX3 when operating portable. Part of my operating is done with WSJT-X, for JT65 and JT9 modes. This software is very time sync critical - the computer clock needs to be within +- one second accuracy. Here at home on