I'm not claiming we need to modify the frequency source immediately as we are not limited by the oscillator amplitude or phase noise.
I just wanted to note something in mind before it goes away quickly.
Alberto's T1000461 tells us that the oscillator and phase noise are degraded by factor of ~3 and ~5 due to the RF chanin.
My diagram is possible removal of up-down situation of the chain.
Maybe more direct improvement would be:
- Removal of two amplifiers out of four. The heat condition of the box is touch thought it is not critical.
- The modification will allow us to have a spare 11MHz channel at 1X2 rack that would be useful for 3f modulation.