[Elecraft] XG3_Signal_Source

[Paul Saffren N6HZ]

Ken, 

As the firmware engineer on the XG3 I can tell you that 1.5 MHz is as low as
we can go on the CS2100CP "synthesizer" chip using the 10 MHz internal
reference oscillator.  I suppose one thing you could try is to remove the 10
MHz crystal and replace it with a 1 MHz one.  That might get you down there
but you would sacrifice the upper frequencies in doing so.  I haven't tried
it personally, so I cannot guarantee the outcome. 

Regarding modulation, I looked into that a while ago and found that the PLL
lock time of the CS2100CP is too long to allow for any type of modulation.  

73,

Paul





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