[600MRG] WSPRlite Time Sync

[John Andrews]

 From their FAQ's:

"The WSPR specification says transmissions should start 1 seconds into 
the hour. Why do you recommend starting 2 seconds in?
We characterised the WSPR decoding software and found that it was 
significantly more tolerant to late starting than to early starting. The 
WSPRlite uses a high quality TCXO as its time and frequency standard. 
Measuring many WSPRlite devices we found that the largest likely error 
after 30 days was about 1.6 seconds. By starting 2 seconds after the 
hour, even the worst-case units will be well within the decode window 
after 30 days."

On 6/22/2017 3:37 PM, Frank Lotito wrote:
> ref: Sotabeams "WSPRlite,"  ref  http://www.sotabeams.co.uk/wsprlite
> 
> An interesting device!  I definitely find it appealing that one does not have to tie up a PC to run WSPR!  Can anyone comment on the ability of the transmitter's clock to maintain adequate time accuracy over a period of hours / days to meet the time synchronization requirements of WSPR?
> 
> 73 Frank K3DZ / WH2XHA
> 
> 
>    
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