[time-nuts] Setting Time on WSPR Radio Transmitter
Hal Murray
hmurray at megapathdsl.net
Fri Jun 22 18:27:43 UTC 2018
brooke at pacific.net said:
> 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.
What do you mean by "exactly"?
> 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?
How does time on your cell phone compare with your desktop?
ntpq -p on your desktop will give you a lot of information on how good your
desktop time is.
time.is seems to be using javascript over http/TCP. That's not a good start,
but can be good enough, depending on your needs and the implementation
details. I'm generally not impressed with things that don't provide details.
(Maybe I just didn't look in the right place.)
In this type of discussion, a lot depends on your network connections. How
good is the connection to your desktop? How good is the connection to your
cell phone?
> The problem is the transmitter (and the start button) are out in the forest
> where the antenna is located.
What sort of connection do you have to the transmitter? I'm guessing there is
something like a Raspberry Pi out there. Why not run NTP on that system?
--
These are my opinions. I hate spam.
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