[Skimmertalk] [RBN-OPS] Attention RBN Skimmer Ops

[Pete Smith N4ZR]

I'll have to defer to W3OA for details on exactly how the Aggregator 
syncs the host computer's time, but it is precisely the issue of network 
transit times that we're trying to get a handle on, so we really need 
good timestamps from as many Aggregators as we can. During CQWWCW we saw 
a wide variety of delays, including a lot that were negative numbers.  
Rather than assume a hole in the space-time continuum, we concluded that 
some computer clocks were off, and decided it would be worthwhile to 
incorporate NTP sync in the Aggregator rather than impose on a bunch of 
RBN Skimmer ops, of varying degrees of computer savvy, a requirement to 
install separate time sync.

Dick, anything I've missed?

73, Pete N4ZR
Check out the Reverse Beacon Network at
http://reversebeacon.net,
blog at reversebeacon.blogspot.com.
For spots, please go to your favorite
ARC V6 or VE7CC DX cluster node.

On 1/25/2015 11:46 AM, David Robbins wrote:
> p.s. most reasonably recent windows computers are already set to do a sync
> to time.windows.com, though you can change it to other sources.  I would
> hate to have a competing time setter running just in case there was a
> problem.  a better solution would be to have the aggregator send it's time
> to the rbn and then get feedback on it's clock error or network transit time
> problems similar to the frequency error feedback we get now.  that way the
> operator could adjust their clock or investigate slow network problems if
> needed.
>
> David Robbins K1TTT
> e-mail: mailto:k1ttt at arrl.net
> web: http://wiki.k1ttt.net
> AR-Cluster node: 145.69MHz or telnet://k1ttt.net
>
>
> -----Original Message-----
> From: Skimmertalk [mailto:skimmertalk-bounces at contesting.com] On Behalf Of
> paul_group at greenrover.demon.co.uk
> Sent: Sunday, January 25, 2015 16:04
> To: RBN-OPS at yahoogroups.com
> Cc: RBN-OPS at yahoogroups.com; skimmertalk at contesting.com
> Subject: Re: [Skimmertalk] [RBN-OPS] Attention RBN Skimmer Ops
>
>
> Hi Pete, thanks for the heads up. That will not happen here as I already
> lock all of the network to an ntp pool and certainly don't want to downgrade
> the setup.
>
> Regards Paul LA/GW8IZR
>
> ------- Original message -------
>> From: Pete Smith N4ZR n4zr at contesting.com [RBN-OPS]
>> <RBN-OPS at yahoogroups.com>
>> To: RBN-OPS at yahoogroups.com, skimmertalk at contesting.com
>> Sent: 25.1.'15,  16:17
>>
>> When you have time, it would be great if you would download Aggregator
>> 4 beta 6 from the RBN web site
>>
>> <http://www.reversebeacon.net/downloads/aggregator/rbn_aggregator-40b6
>> .exe>
>>
>> and run it in yourSkimmer/SkimServ installation feeding the RBN. This
>> beta incorporates a feature that precisely adjusts  the computer clock
>> it is running on, using NTP.  The purpose of having precise Aggregator
>> time is to measure the delay between spots coming out of Aggregators
>> and being posted on the web site/written to the database.
>>
>> Thanks!
>>
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