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| Simulcast timing http://www.interceptradio.com/bbs/viewtopic.php?f=1&t=6299 |
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| Author: | Atomic Taco [ Fri Aug 10, 2012 12:03 am ] |
| Post subject: | Simulcast timing |
Before GPS, how did simulcast sites keep time to stay in sync? |
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| Author: | nickcarr [ Fri Aug 10, 2012 1:26 am ] |
| Post subject: | Re: Simulcast timing |
computer clock? i.e. network time |
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| Author: | KB7AIL [ Fri Aug 10, 2012 5:14 am ] |
| Post subject: | Re: Simulcast timing |
Also, our good friends, WWV, WWVH, WWVB and CHU as well as many other time standard stations... WWV and WWVB are still my most commonly used methods of finding the correct time (as well as quite a few other things- HF propagation for one.) |
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| Author: | N7QOR [ Fri Aug 10, 2012 5:35 am ] |
| Post subject: | Re: Simulcast timing |
It was analog, one got very good with delay boards... |
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| Author: | Wiz [ Fri Aug 10, 2012 5:46 am ] |
| Post subject: | Re: Simulcast timing |
Rubidium frequency standard. Wiz |
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| Author: | chpalmer [ Fri Aug 10, 2012 6:26 am ] |
| Post subject: | Re: Simulcast timing |
High stability oscillators, a tuning tool and the ability to hear the other site as you tuned. Having all the crystals made from the same stock at the same time helped with getting them to age together and usually drift the same direction. Good stable power supply to the site. Site delay- we used Allen Avionics delay boards. |
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| Author: | jrw14493 [ Fri Aug 10, 2012 10:28 am ] |
| Post subject: | Re: Simulcast timing |
Remember those old cat clocks with the waving tail and eyes that moved back and forth? Those were installed in mountain top sites and as the tail moved back and forth it would hit the side of the repeater cabinet and set the timing of the clock. |
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| Author: | Atomic Taco [ Fri Aug 10, 2012 10:31 am ] |
| Post subject: | Re: Simulcast timing |
jrw14493 wrote: Remember those old cat clocks with the waving tail and eyes that moved back and forth? Those were installed in mountain top sites and as the tail moved back and forth it would hit the side of the repeater cabinet and set the timing of the clock.  Atomic Taco likes this
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| Author: | the Outlaw [ Fri Aug 10, 2012 11:58 am ] |
| Post subject: | Re: Simulcast timing |
I'm quite sure it was some sort of voodoo magic. |
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| Author: | Wilrobnson [ Fri Aug 10, 2012 1:59 pm ] |
| Post subject: | Re: Simulcast timing |
Gerbil Voodoo. |
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| Author: | Jim [ Fri Aug 10, 2012 3:22 pm ] |
| Post subject: | Re: Simulcast timing |
Wilrobnson wrote: Gerbil Voodoo. Richard Gere knows but won't tell. :lol: |
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| Author: | chpalmer [ Fri Aug 10, 2012 9:10 pm ] |
| Post subject: | Re: Simulcast timing |
Nah just Ed! http://www.simulcastsolutions.com/ |
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| Author: | KE7JFF [ Sat Aug 11, 2012 4:00 pm ] |
| Post subject: | Re: Simulcast timing |
Western Union clocks! |
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| Author: | Ken [ Mon Aug 13, 2012 12:08 pm ] |
| Post subject: | Re: Simulcast timing |
And magnets... lots of magnets.... with saltwater.. |
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