Because I wasn't able to find it in the Datasheet or trying with the Eval SW,
it's possible for this PLL with integrated VCO (HMC767) to disable the RF signal in the output completely?
Setting some bit register I see it only put the RF signal on the edge of the band, but never really turn it off.
It would be nice to be able to do it without turning off the supply or using an external component.
The VCO does not have a control feature, so it is not possible to mute the output.