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[time-freq] Another RefLock II question

Luis Cupido cupido at mail.ua.pt
Tue Mar 21 23:52:46 UTC 2006


MessageTks,
lc.

  ----- Original Message ----- 
  From: paul.kelley at us.army.mil 
  To: TAPR time and frequency projects 
  Sent: Saturday, March 18, 2006 3:11 PM
  Subject: Re: [time-freq] Another RefLock II question


  Again I haven't got my charts with me (I 'm in the Philippines right now) but as I remember it's

  15,734.264 +/- .05Hz with the field frequency of  59.94 Hz again for the us NTSC system M although I think PAL M has the same Fh and field rate for instance Brazil. It is sometimes generalized as 15,750 Hz / 60 Hz.. Most PAL / SECAM systems use the 15625 +/- .016 Hz for Fh and field rate of 50 Hz.. 



  I am writting this on a simple text editor and from memory which as I get older is failing more often.

  please don't bet the farm on my memories.

  Paul



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  What is the exact us Fh ?

  lc
  CT1DMK.


    ----- Original Message ----- 
    From: paul.kelley at us.army.mil 
    To: TAPR time and frequency projects 
    Sent: Saturday, March 18, 2006 4:20 AM
    Subject: Re: [time-freq] Another RefLock II question


    SORRY IT IS  3.57954545Mhz  +/- 10 Hz  D< .1 Hz  US NTSC M  Fsc=455/2  . Fh



    The other frequeny is PAL M  Fsc=909/4 . Fh





    I've worked with so many stands converters that there all blurring together

















    paul



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    Dear Luis,

    Do you think that it would be possible to use RefLock II to lock a 10 or 100 MHz oscillator to 3.57954545... MHz input?

    MRO (W9IP)
    -----
    Michael R. Owen, Ph.D.
    Senior System Engineer
    Sensis Corporation
    (315)634-3066 



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