[hpsdr] Fixed Saw Oscillators

[Alberto I2PHD]

Grant Hodgson wrote:
> 
> The lowest phase noise approach would probably be as Chris GW4DGU has 
> stated, which is to use a VHF crystal oscillator with a low noise 
> multiplier, but in order to get very low spurs (of the clock 
> sub-harmonics) a high degree of filtering is required, which as has 
> already been mentioned, is not a trivial task.

That way was also used by Giuliano I0CG for the 1GHz clock for his new AD9912 DDS board.
Look here :
http://www.sdradio.eu/doc/1_GHz_clock.pdf

73  Alberto  I2PHD


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