[time-nuts] Please help me capture the leap-second for future testing

John Ackermann N8UR jra at febo.com
Wed Dec 21 13:46:22 EST 2005

Poul-Henning Kamp wrote:
> I am trying to get data collected from as many time sources as
> possible across the leapsecond on new years eve/day, and I would
> appreciate if you guys could help me out.
> The idea is to create a free public repository of data which can be used
> to test computers and software for leapsecond compliance.
> I have asked the GNUradio crew to help out with off-the-air samples,
> and I hope people in this forum can help me out with captured data
> streams from all sorts of radio receivers (WWV/DCF/GPS etc).
> Maybe I can persuade Tom to lend me "test.a.leapsecond.com" domain
> for the result ?  :-)
> Thanks in advance,
> Poul-Henning

Hi Poul-Henning --

I'll be able to capture at least two HF frequencies simultaneously if 
you'd like, with SSB reception and audio recorded to a sound card.  I'm 
not sure if WWVB will be strong enough with that system to decode; I'll 
try to log some of it ahead of time and send it to you to see if it'll 
work.  Otherwise, I can do WWV on 5 and 10MHz, which are the most likely 
to have propagation heree at that time of evening.

I'll also be able to log the messages from the Z3801A and whatever data 
I can dump from the Spectracom 8164 WWVB receiver.


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