Re: [wsjt-devel] DXPedition System Clock Sync

. Sorry if I’m beating a dead horse. Dave KD2JIP From: Mike Besemer Sent: Thursday, December 7, 2017 5:51 PM To: 'WSJT software development' Subject: Re: [wsjt-devel] DXPedition System Clock Sync Remember that in the U.S., automatically controlled beacons are not legal below 28.0 MHz. It would

Re: [wsjt-devel] DXPedition System Clock Sync

nk you!   Dave KD2JIP   From: Brian Moran Sent: Thursday, December 7, 2017 10:55 PM To: WSJT software development Subject: Re: [wsjt-devel] DXPedition System Clock Sync   So, back to the practical matter of getting the time right faced with lack of WWV/WWVH, no GPS NMEA sentences to p

Re: [wsjt-devel] DXPedition System Clock Sync

Brian, that’s very helpful. Thank you! Dave KD2JIP From: Brian Moran Sent: Thursday, December 7, 2017 10:55 PM To: WSJT software development Subject: Re: [wsjt-devel] DXPedition System Clock Sync So, back to the practical matter of getting the time right faced with lack of WWV/WWVH, no GPS

Re: [wsjt-devel] DXPedition System Clock Sync

modes might not be ideal, especially because the transmissions can be long. > > > > Dave > > KD2JIP > > > > *From: *Ria Jairam <rjai...@gmail.com> > *Sent: *Thursday, December 7, 2017 8:41 PM > *To: *WSJT software development <wsjt-devel@lists.sourceforge.net>

Re: [wsjt-devel] DXPedition System Clock Sync

You’re right. In that regard, depending on the circumstances, digital modes might not be ideal, especially because the transmissions can be long. Dave KD2JIP From: Ria Jairam Sent: Thursday, December 7, 2017 8:41 PM To: WSJT software development Subject: Re: [wsjt-devel] DXPedition System

Re: [wsjt-devel] DXPedition System Clock Sync

read the book... definitely fascinating - and frightening! Mike WM4B -Original Message- From: Gary McDuffie [mailto:mcduf...@ag0n.net] Sent: Thursday, December 7, 2017 8:42 PM To: WSJT software development Subject: Re: [wsjt-devel] DXPedition System Clock Sync > On Dec 7, 2017, a

Re: [wsjt-devel] DXPedition System Clock Sync

: Thursday, December 7, 2017 8:32 PM To: WSJT software development Subject: Re: [wsjt-devel] DXPedition System Clock Sync > On Dec 7, 2017, at 1:55 PM, Dave Corsello <kd2...@gmail.com> wrote: > > Given the current state of geo-politics, I think the probability of GPS being >

Re: [wsjt-devel] DXPedition System Clock Sync

I would stay off the air. No need to alert people to where supplies are! Ria, N2RJ On Thu, Dec 7, 2017 at 8:30 PM, Gary McDuffie wrote: > > >> On Dec 7, 2017, at 1:55 PM, Dave Corsello wrote: >> >> Given the current state of geo-politics, I think the

Re: [wsjt-devel] DXPedition System Clock Sync

> On Dec 7, 2017, at 1:55 PM, Dave Corsello wrote: > > Given the current state of geo-politics, I think the probability of GPS being > knocked out by EMP is greater than zero. So I thought it was worthwhile to > continue the discussion. If that were to happen, you

Re: [wsjt-devel] DXPedition System Clock Sync

On 07/12/2017 05:48 p.m., Dave Corsello wrote: Then the idea of an automatic network isn’t feasible. Maybe it could work if every WSJT user who had access to NTP had the option to broadcast time data periodically from their station. Let's get real here, folks. The SOLE utility of WSJT-X is

Re: [wsjt-devel] DXPedition System Clock Sync

But surely it's much more fun to overload functionality on to a system that's already creaking at the seams with excess functionality rather than take a simple and direct approach! That said, none of my W. Heath Robinson books have any mention of a Nuclear Winter, as more recently mentioned.

Re: [wsjt-devel] DXPedition System Clock Sync

of SHTF situation probably takes digital modes (except CW) off the table. Hopefully, we never find out. Mike WM4B From: Dave Corsello [mailto:kd2...@gmail.com] Sent: Thursday, December 7, 2017 6:48 PM To: WSJT software development Subject: Re: [wsjt-devel] DXPedition System Clock Sync

Re: [wsjt-devel] DXPedition System Clock Sync

, 2017 7:05 PM To: WSJT software development Subject: Re: [wsjt-devel] DXPedition System Clock Sync LOL. I hear you. As I said, you would have to keep an entire backup rig, including solar battery power and tablet, under EMI shielding. My hope is that I’m not the only one who is doing

Re: [wsjt-devel] DXPedition System Clock Sync

, December 7, 2017 6:45 PM To: 'WSJT software development' Subject: Re: [wsjt-devel] DXPedition System Clock Sync If an EMP takes out GPS, there’s a good chance our ham gear and computers will be gone too… along with the power grid. Some of us who still have some hollow-state gear in reserve might still

Re: [wsjt-devel] DXPedition System Clock Sync

: Thursday, December 7, 2017 5:51 PM To: 'WSJT software development' Subject: Re: [wsjt-devel] DXPedition System Clock Sync Remember that in the U.S., automatically controlled beacons are not legal below 28.0 MHz. It would be much more efficient to encode time data within existing QSO data

Re: [wsjt-devel] DXPedition System Clock Sync

development Subject: Re: [wsjt-devel] DXPedition System Clock Sync Granted. This would be one relatively small detail. But assuming that a number of other details are in order, including backup QRP gear stored under sufficient EMI shielding, it would be great to have such a reliable form

Re: [wsjt-devel] DXPedition System Clock Sync

, this is not a very up-beat subject, although for me, it’s pretty exciting. I’m ready to meet my Maker, so everything else is adventure. Dave KD2JIP From: Gil Baron W0MN Sent: Thursday, December 7, 2017 6:06 PM To: WSJT software development Subject: Re: [wsjt-devel] DXPedition System Clock Sync If we

Re: [wsjt-devel] DXPedition System Clock Sync

vel@lists.sourceforge.net> Subject: Re: [wsjt-devel] DXPedition System Clock Sync Ria, Yes, I just ordered a cheap GPS receiver. I’m looking forward to using it with my Windows 10 tablet. Two of my primary interests are emergency communication and finding ways to function as off-gird as po

Re: [wsjt-devel] DXPedition System Clock Sync

7 5:39 PM > To: WSJT software development > Subject: Re: [wsjt-devel] DXPedition System Clock Sync > > Ria, > > Yes, I just ordered a cheap GPS receiver. I’m looking forward to using it > with my Windows 10 tablet. > > Two of my primary interests are emergency comm

Re: [wsjt-devel] DXPedition System Clock Sync

To: WSJT software development Subject: Re: [wsjt-devel] DXPedition System Clock Sync Ria, Yes, I just ordered a cheap GPS receiver. I’m looking forward to using it with my Windows 10 tablet. Two of my primary interests are emergency communication and finding ways to function as off-gird as possible

Re: [wsjt-devel] DXPedition System Clock Sync

bility of GPS > being knocked out by EMP is greater than zero. So I thought it was > worthwhile to continue the discussion. > > 73 > > Dave > > KD2JIP > > > > From: Ria Jairam > Sent: Thursday, December 7, 2017 3:25 PM > To: WSJT software developme

Re: [wsjt-devel] DXPedition System Clock Sync

Or wwv/wwvh depending. on Mellish Reef we lost time timeserver sync for a recalcitrant laptop, syncd it this way. We otherwise used an NTP server driven from a cheap GPS on our reef network. Sent via iPhone > On Dec 7, 2017, at 12:23 PM, Ria Jairam wrote: > > I think this

Re: [wsjt-devel] DXPedition System Clock Sync

7, 2017 3:25 PM To: WSJT software development Subject: Re: [wsjt-devel] DXPedition System Clock Sync I think this was discussed before and the consensus was that they could just use a GPS receiver instead. 73 Ria, N2RJ On Thu, Dec 7, 2017 at 3:18 PM, Dave Corsello <kd2...@gmail.com>

Re: [wsjt-devel] DXPedition System Clock Sync

I think this was discussed before and the consensus was that they could just use a GPS receiver instead. 73 Ria, N2RJ On Thu, Dec 7, 2017 at 3:18 PM, Dave Corsello wrote: > Would it make sense to develop a new WSJT mode for time sync? One > implementation might be through

Re: [wsjt-devel] DXPedition System Clock Sync

Would it make sense to develop a new WSJT mode for time sync? One implementation might be through dedicated stations that grab UTC via NTP and broadcast it, and an option in WSJT software to listen for the beacon, calculate an offset between local system time and the received code, and apply

Re: [wsjt-devel] DXPedition System Clock Sync

November 12, 2017 2:03:08 PM To: WSJT software development Subject: Re: [wsjt-devel] DXPedition System Clock Sync David wrote: "A knob could adjust WSJT-X’s notion of the time of day to “zero beat” the DX station, both in RX and TX so you can communicate, regardless of how far off the DX st

Re: [wsjt-devel] DXPedition System Clock Sync

:08 PM To: WSJT software development Subject: Re: [wsjt-devel] DXPedition System Clock Sync David wrote: "A knob could adjust WSJT-X’s notion of the time of day to “zero beat” the DX station, both in RX and TX so you can communicate, regardless of how far off the DX station’s clock may be

Re: [wsjt-devel] DXPedition System Clock Sync

David wrote: "A knob could adjust WSJT-X’s notion of the time of day to “zero beat” the DX station, both in RX and TX so you can communicate, regardless of how far off the DX station’s clock may be." There's no need for anything as programmatically complex or real estate hogging as a knob - a

Re: [wsjt-devel] DXPedition System Clock Sync

, and my feet still don’t touch the ground!!! Dave / NX6D From: Bill Shell <n...@n6ws.com> Sent: Saturday, November 11, 2017 4:54:58 PM To: wsjt-devel@lists.sourceforge.net Subject: Re: [wsjt-devel] DXPedition System Clock Sync Scott, I understand your op

Re: [wsjt-devel] DXPedition System Clock Sync

that is well supported and fully integrated to Windows. Dave / NX6D From: Ria Jairam <rjai...@gmail.com> Sent: Saturday, November 11, 2017 8:32:36 AM To: WSJT software development Subject: Re: [wsjt-devel] DXPedition System Clock Sync That is an excellen

Re: [wsjt-devel] DXPedition System Clock Sync

> On Nov 11, 2017, at 5:54 PM, Bill Shell wrote: > > VK9MA at Mellish Reef was the first time I copied a DXPedition on 160m using > one of the WSJT modes, and very few contacts were made because of the timing > disparity between the DX station and others calling. Since the

Re: [wsjt-devel] DXPedition System Clock Sync

On 12/11/2017 01:42, David Tiller wrote: The reply I received from Bill G4WJS on the list was not enthusiastic about needing/wanting a time sync option and in fact relegated it to the realm of the absurd: Hi David, the time sync requirement of FT8 has been relaxed to allow up to ~2.5

Re: [wsjt-devel] DXPedition System Clock Sync

On 11/12/2017 12:51 AM, carc...@gmail.com wrote: > A clock sync feature using WWV, WWVB, JJY, YVTO, CHU, DCF etc would > help those who don't have the ability to sync clock over the Internet. At many places, a good reception of the signal of these time signal transmitters is more

Re: [wsjt-devel] DXPedition System Clock Sync

Bill N6WS wrote: > the purpose of FT8 and any other WSJT operating mode is to communicate. Of course you're correct, the purpose is to communicate, and to do that with any of the time-synced modes we have to have a reference. This subject, IMHO, is the most important usability item for the

Re: [wsjt-devel] DXPedition System Clock Sync

Scott, I understand your opinions, but the purpose of FT8 and any other WSJT operating mode is to communicate.  I am sure those stations on 160m this morning trying to work VK9MA on FT8 were quite frustrated with their inability to communicate with the DX Station. Try thinking outside the

Re: [wsjt-devel] DXPedition System Clock Sync

The free version of Multipsk comes with an executable called Clock that does this. It's oriented toward places that can hear North America and Europe. http://f6cte.free.fr/index_anglais.htm On Sat, Nov 11, 2017 at 6:32 AM, Ria Jairam wrote: > That is an excellent idea. > > A

Re: [wsjt-devel] DXPedition System Clock Sync

On 11/11/2017 11:11 a.m., Bill Shell N6WS wrote: Thank you David for your comment. You understand my original point in asking for the option. All the other comments were trending to the need for the system clock to be accurate. It is the framing that needs the accuracy. The several problems

Re: [wsjt-devel] DXPedition System Clock Sync

Thank you David for your comment.  You understand my original point in asking for the option.  All the other comments were trending to the need for the system clock to be accurate.  It is the framing that needs the accuracy. 73, Bill On 11/11/2017 8:48 AM, David Tiller wrote: You wrote:

Re: [wsjt-devel] DXPedition System Clock Sync

You wrote: Not sure what it might take to support clock changes across various OS’s now using WSJT-X. The app doesn't have to actually set the clock. If the app were modified to keep track of a delta time value and use that for timing decisions, the actual clock state is irrelevant. The

Re: [wsjt-devel] DXPedition System Clock Sync

I actually started writing a gnu radio block to do WWV time decoding with the goal of adding a new mode to wsjtx, and had a little success. I'm not experienced enough in DSP to make it perfect. I did get decodable bits, however. If any DSP experts would be willing to give me some pointers, I'll

Re: [wsjt-devel] DXPedition System Clock Sync

Sounds like a perfect idea for a stand-alone application. Not sure what it might take to support clock changes across various OS’s now using WSJT-X. George J Molnar KF2T, Nevada, USA > On Nov 11, 2017, at 8:32 AM, Ria Jairam wrote: > > That is an excellent idea. >

Re: [wsjt-devel] DXPedition System Clock Sync

That is an excellent idea. A clock sync feature using WWV, WWVB, JJY, YVTO, CHU, DCF etc would help those who don't have the ability to sync clock over the Internet. 73 Ria, N2RJ On Sat, Nov 11, 2017 at 11:23 AM, Scott Bidstrup wrote: > On 11/11/2017 09:26 a.m., Bill Shell

Re: [wsjt-devel] DXPedition System Clock Sync

On 11/11/2017 09:26 a.m., Bill Shell N6WS wrote: Hello, While using FT8 in a DXPedition setting, there may be conditions where there is no reliable timing source for syncing of the system clock. Bill, When my Internet here in Costa Rica has been down, I've been able to sync my system clock

Re: [wsjt-devel] DXPedition System Clock Sync

On 11/11/2017 04:26 PM, Bill Shell N6WS wrote: Hello Bill, > While using FT8 in a DXPedition setting, there may be conditions where > there is no reliable timing source for syncing of the system clock.  > Could an option be added for a "DXPedition Mode" to allow syncing their > RX & TX framing

Re: [wsjt-devel] DXPedition System Clock Sync

Hello Bill, a cheap USB-GPS dongle for US$ 10,- and the Meinberg free software will solve the problem. Set server entry: server 127.127.20.3 minpoll 4 prefer # NMEA serial port The fourth number in the IP-address field (127.127.20.3) should be the COM port number - 3 in this example. Hope

Re: [wsjt-devel] DXPedition System Clock Sync

Bill, There are many options for software that will sync your PC time using a $20 USB GPS receiver. That seems like a better option than trying to track other parties' times with unknown accuracies. KC9SWV - Morgen On Nov 11, 2017 10:42 AM, "Bill Shell N6WS" wrote: Hello,

Re: [wsjt-devel] DXPedition System Clock Sync

Hi Bill, Another option is to use a GPS receiver and bkttimesync. Even some ham HTs have Bluetooth GPS built in.This works well. 73 Ria, N2RJ On Sat, Nov 11, 2017 at 10:42 AM Bill Shell N6WS wrote: > Hello, > > While using FT8 in a DXPedition setting, there may be conditions

[wsjt-devel] DXPedition System Clock Sync

Hello, While using FT8 in a DXPedition setting, there may be conditions where there is no reliable timing source for syncing of the system clock.  Could an option be added for a "DXPedition Mode" to allow syncing their RX & TX framing to a weighted average of signals received? This morning