[time-nuts] 60 KHz Receiver

[Chuck Harris]

Were it me, I would change the model from a few high power
transmitters netted together to a ton of WiFi routers running
special software and netted together.

-Chuck Harris

paul swed wrote:
> A great thread by everyone. Oh to make the loran receivers work. But that is
> indeed the past. Can not hear Europe on east coast.
> But the question really is, what do you want to accomplish? I don't think
> its a time stamp. Its just to easy to get it from GPS or the network. But
> that could be a secondary use. I believe the primary goal would be frequency
> distribution with perhaps a tick.
> If this is the goal then I am 100% in agreement that there are far more
> efficient modulation and recovery methods today. The trick is you need
> something that does not effect the accuracy of the timing and may improve
> the various transmission issues at these frequencies. By the way this list
> has a heck of a brain trust so its very very possible.
> Someone mentioned spread spectrum. Thats very interesting as it is what GPS
> uses and could work at these lower frequencies.
> Like the  "Hey this is just telemetry" comment. You know the FCC does indeed
> give temp authorization for quite long periods of time. Years in fact.
> So I would be in the keep it simple mode.
> Great a single carrier with a id every 10 min. Maybe that could be waved to
> 1 per hour or 24 hours. Unfortunately then we have nothing better then wwvb.
> The modulation method may be key and then what freq we would use. BPSK at
> higher frequencies is also impressive.
> My first contact was in the indian ocean on 5 whats from boston.
> Regards
> Paul