[time-nuts] VLF time is not dead :-)

[Alberto di Bene]

   Poul-Henning Kamp wrote:

The receiver is homegrown:  A loop antenna, an amplifier and an A/D
card in a computer.  The program generates a reference sine/cosine
frequency for the carrier mixes with the a/d samples and averages
over a second.  Sample-rate is 1MHz, 12 bits.  CPU is 560MHz P3.
  

   How did you generate the reference frequency for the down mixing ?
   If I understand correctly, it is a software NCO what you used. Which
   was the source for its clock ?  Thanks
   73  Alberto  I2PHD