The value of the am over dc was the ease that it could be sent over ac coupled amplifiers and distribution. These things drove numbers of clocks and data recorders typically. IRIB B I believe came about roughly in 1957-59. I had used it for my clock distribution until I ran across numbers of video LTC decoders at the right price. You just never know when you need accurate time in the basement or garage and definitely insures you don't over do the steaks on the grill. Regards Paul
On Fri, Aug 9, 2013 at 1:38 PM, Al Wolfe <[email protected]> wrote: > The TrueTime GPS receiver and frequency standard I have puts out IRIG-B > as well as 4 each 10 Mhz. signals. What in practical terms is the IRIG-B > (AM, not DC) good for? > > Al, K9SI > > > The DC code was usually TTL compatible PWM and the IRIG-B would be 3V >> pk-pk AM. Marker 8 cycles, "1" 5 cycles and "0" 2 cycles wide. Spaces 1V >> pk-pk. >> > > > ______________________________**_________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to https://www.febo.com/cgi-bin/** > mailman/listinfo/time-nuts<https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts> > and follow the instructions there. > _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
