); SAEximRunCond expanded to false Errors-To: [EMAIL PROTECTED] RETRY In a message dated 10/5/2007 16:28:21 Pacific Daylight Time, [EMAIL PROTECTED] writes:
>OK, not really a time related post...except for the clock in the CD >player...which begs the question, any time nuts play with creating a >more precise CD player using a precision oscillator? Think it would >make a difference? I can see the selling point now "Our CD player is >Rubidium controlled!" >Tom Frank Hi Tom, a related very interesting experiment is to take the Horizontal Sync signal from an old Tube-type TV, and feed it to a frequency counter with GPSDO time base (preferrably). Got to be careful about the high voltages inside the TV though! BTW: it's not 15374KHz, there are some significant decimal digits (I don't recall the formula to calculate the frequency exactly, but it was the total number of frame lines multiplied by 59.94Hz or so). Then you can test how accurate the broadcasters' 27MHz reference clock is. One would be surprised how inaccurate(!) some broadcasters are, and how much drift some Satellite providers have. A lot of the stability is dependent on the receiver of course, and how well the receiver's VCXO locks to the Broadcaster. bye, Said ************************************** See what's new at http://www.aol.com _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.