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Post by part15engineer on Apr 9, 2018 16:22:09 GMT
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Post by Boomer on Apr 9, 2018 19:29:51 GMT
Thanks for the view of the Rangemasters and GPS units, and especially the back of the Rangemaster's printed circuit, I hadn't seen that before.
I see lots of different changes in the Rangemaster boards too.
Looks like once you get the system all put together, it will be a nice one!
Boomer
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Post by part15engineer on Apr 9, 2018 22:09:51 GMT
I need to find someone who knows how to interface the GPS units to the rangemaster units or in the alternative point me to resources with info on how to do it.
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Post by part15engineer on Apr 10, 2018 1:56:41 GMT
looks like I need a pll circuit for am broadcast that uses a 10mhz reference
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Post by Boomer on Apr 10, 2018 7:28:43 GMT
Ah, got you. It's one reason I hadn't replied though, not having direct experience with a Rangemaster.
I could see using 3 divide-by-10 Johnson counters in cascade as a divide by 1000 block to get the 10 mhz down to 10 khz, and use that as the 10 khz reference for a broadcast band PLL. You could then set your frequency by the PLLs switches in the usual way.
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