Empathy List Archives

BC

Brooke Clarke

Fri, Jun 22, 2018 4:58 PM

Hi:

I'm experimenting with a WSPR beacon transmitter and part of how it works depends on pushing the start button at exactly
2 seconds past the minute.
http://prc68.com/I/DRM.shtml#WSPR
The problem is the transmitter (and the start button) are out in the forest where the antenna is located.
http://prc68.com/I/Images/TCI651TOA1s.jpg

SotaBeams, who make the WSPRlite transmitter recommends using http://time.is/ which seems to be accurate on my cell
phone but not on my desktop running the stock NTP.
Can someone comment on time.is?

--
Have Fun,

Brooke Clarke
http://www.PRC68.com
http://www.end2partygovernment.com/2012Issues.html

Hi: I'm experimenting with a WSPR beacon transmitter and part of how it works depends on pushing the start button at exactly 2 seconds past the minute. http://prc68.com/I/DRM.shtml#WSPR The problem is the transmitter (and the start button) are out in the forest where the antenna is located. http://prc68.com/I/Images/TCI651TOA1s.jpg SotaBeams, who make the WSPRlite transmitter recommends using http://time.is/ which seems to be accurate on my cell phone but not on my desktop running the stock NTP. Can someone comment on time.is? -- Have Fun, Brooke Clarke http://www.PRC68.com http://www.end2partygovernment.com/2012Issues.html

AB

Andy Backus

Fri, Jun 22, 2018 5:20 PM

A cheap WWVB watch will do the trick.

Andy Backus

From: time-nuts time-nuts-bounces@lists.febo.com on behalf of Brooke Clarke brooke@pacific.net
Sent: Friday, June 22, 2018 9:58 AM
To: Discussion of precise time and frequency measurement
Subject: [time-nuts] Setting Time on WSPR Radio Transmitter

Hi:

I'm experimenting with a WSPR beacon transmitter and part of how it works depends on pushing the start button at exactly
2 seconds past the minute.
http://prc68.com/I/DRM.shtml#WSPR

Digital Radio Modes - PRC68.comhttp://prc68.com/I/DRM.shtml#WSPR
prc68.com
Background By using a digital mode where the signal bandwidth is narrower than the standard 300 Hz to 3,000 Hz voice bandwidth the signal to noise ratio can be improved thus working where voice will not work.

The problem is the transmitter (and the start button) are out in the forest where the antenna is located.
http://prc68.com/I/Images/TCI651TOA1s.jpg

SotaBeams, who make the WSPRlite transmitter recommends using http://time.is/ which seems to be accurate on my cell
phone but not on my desktop running the stock NTP.
Can someone comment on time.is?

--
Have Fun,

Brooke Clarke
http://www.PRC68.com
http://www.end2partygovernment.com/2012Issues.html

time-nuts mailing list -- time-nuts@lists.febo.com
To unsubscribe, go to https://lists.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.

A cheap WWVB watch will do the trick. Andy Backus ________________________________ From: time-nuts <time-nuts-bounces@lists.febo.com> on behalf of Brooke Clarke <brooke@pacific.net> Sent: Friday, June 22, 2018 9:58 AM To: Discussion of precise time and frequency measurement Subject: [time-nuts] Setting Time on WSPR Radio Transmitter Hi: I'm experimenting with a WSPR beacon transmitter and part of how it works depends on pushing the start button at exactly 2 seconds past the minute. http://prc68.com/I/DRM.shtml#WSPR Digital Radio Modes - PRC68.com<http://prc68.com/I/DRM.shtml#WSPR> prc68.com Background By using a digital mode where the signal bandwidth is narrower than the standard 300 Hz to 3,000 Hz voice bandwidth the signal to noise ratio can be improved thus working where voice will not work. The problem is the transmitter (and the start button) are out in the forest where the antenna is located. http://prc68.com/I/Images/TCI651TOA1s.jpg SotaBeams, who make the WSPRlite transmitter recommends using http://time.is/ which seems to be accurate on my cell phone but not on my desktop running the stock NTP. Can someone comment on time.is? -- Have Fun, Brooke Clarke http://www.PRC68.com http://www.end2partygovernment.com/2012Issues.html _______________________________________________ time-nuts mailing list -- time-nuts@lists.febo.com To unsubscribe, go to https://lists.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.

AB

Azelio Boriani

Fri, Jun 22, 2018 5:31 PM

Is time.is not accurate or your desktop's clock? Try https://uhr.ptb.de
On Fri, Jun 22, 2018 at 6:58 PM Brooke Clarke brooke@pacific.net wrote:

Hi:

I'm experimenting with a WSPR beacon transmitter and part of how it works depends on pushing the start button at exactly
2 seconds past the minute.
http://prc68.com/I/DRM.shtml#WSPR
The problem is the transmitter (and the start button) are out in the forest where the antenna is located.
http://prc68.com/I/Images/TCI651TOA1s.jpg

SotaBeams, who make the WSPRlite transmitter recommends using http://time.is/ which seems to be accurate on my cell
phone but not on my desktop running the stock NTP.
Can someone comment on time.is?

--
Have Fun,

Brooke Clarke
http://www.PRC68.com
http://www.end2partygovernment.com/2012Issues.html

time-nuts mailing list -- time-nuts@lists.febo.com
To unsubscribe, go to https://lists.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.

Is time.is not accurate or your desktop's clock? Try https://uhr.ptb.de On Fri, Jun 22, 2018 at 6:58 PM Brooke Clarke <brooke@pacific.net> wrote: > > Hi: > > I'm experimenting with a WSPR beacon transmitter and part of how it works depends on pushing the start button at exactly > 2 seconds past the minute. > http://prc68.com/I/DRM.shtml#WSPR > The problem is the transmitter (and the start button) are out in the forest where the antenna is located. > http://prc68.com/I/Images/TCI651TOA1s.jpg > > SotaBeams, who make the WSPRlite transmitter recommends using http://time.is/ which seems to be accurate on my cell > phone but not on my desktop running the stock NTP. > Can someone comment on time.is? > > -- > Have Fun, > > Brooke Clarke > http://www.PRC68.com > http://www.end2partygovernment.com/2012Issues.html > > _______________________________________________ > time-nuts mailing list -- time-nuts@lists.febo.com > To unsubscribe, go to https://lists.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there.

GR

Gabs Ricalde

Wed, Jun 27, 2018 3:32 PM

On Sat, Jun 23, 2018 at 12:58 AM, Brooke Clarke brooke@pacific.net wrote:

Can someone comment on time.is?

I looked inside time.is, it is using NTP like techniques for
estimating the local time offset. Two requests for the server time are
sent and the response with the smallest round trip time (RTT) is used.
The displayed values are:
difference = local time after receiving response - server time in
response - RTT/2
accuracy = max((RTT - 116 ms)/2, 10 ms)

The description above may not be complete or accurate.

On Sat, Jun 23, 2018 at 12:58 AM, Brooke Clarke <brooke@pacific.net> wrote: > > Can someone comment on time.is? > I looked inside time.is, it is using NTP like techniques for estimating the local time offset. Two requests for the server time are sent and the response with the smallest round trip time (RTT) is used. The displayed values are: difference = local time after receiving response - server time in response - RTT/2 accuracy = max((RTT - 116 ms)/2, 10 ms) The description above may not be complete or accurate.