We're talking about noise issues on the common bus. Two scenarios: high voltage and its for life safety, or high sensitivity and its for unbalanced audio or RF signal fidelity.
It was my understanding that the usual practice is to stake diametrically opposite sides within the concrete formwork for the foundation pad, at 3 o'clock and 9 o'clock position with your grounding electrodes, then lay a loop of bare grounding wire within the footprint of the pad formwork, and go around the clock with that loop, and bond it to both the electrodes on the way by, so that theres a current path possible either way around the ring, and you end up with the two ends of the bare ground wire to cary current shorted to ground. All this cable gets encased in concrete when the pad is poured, probably could be encased in rubble that'll protect it, the point is lots of contact with earth on the ground bus, and the buried cable adds to that, and as for the PVC, as for the NEC, as if dual electrodes alone were not enough, there is a need for a highly reliable ground, i believe when there is significant unbalance between high voltage poles resulting in significant common current which is shorted to your grounding rods, so they had better be the path of least resistance. Related: Faraday Cage.
Yes it is the unbalance between the current on the poles that leads to current on common, if your common bus is tied to the "ground" bus, but ground bus is not really in fact well bonded to earth, that is if you "lift ground" you may be able to detect current between common and ground, which i have felt jolts of electricity, and detected by illuminating an LED with the energy between common and earth from an unbalanced, and poorly grounded installation of an electric fence generator, long story. So yes, if you "ground to the meter" you might pick up some nasty transients on ground that are going to bias your radio frequency signal with the clicker or 60 hz harmonic noise, so in theory having a separate ground network for your RF circuits is going to be quieter, but if everything was actually well bonded to earth per code and on that one good ground bus you have your meter common and your tv ground, it should be really quiet, an EQUIPOTENTIAL SURFACE BONDED TO EARTH but there are high frequency harmonics and noise is complex and unpredictable.
In PA audio, you may sometimes encounter a noisy ground and elect to lift the ground with a switch on the mixer or by disconnecting the ground pin at the power plug, or by plugging all PA gear into the same outlet on the same phase, thus your PA ground reference voltage is no longer sensing the noise due to unbalance on the common bus as mixed in noise and can form its own equilibrium assume some quiet unperturbed value, that all the mic's and generators and pre-amplifiers can agree upon, to achieve a higher signal to noise ratio, that factor of fidelity that crackles into analog RF signals. Of course you have to shield your signal wires or they become aerials, too, and there you may/may not want to be earth bonded or ground lifted, I'd have to experiment to say. Related: Direct Inject Box and Ground Lift.
DTV, FM-HQ, FHSS and other Digital RF systems seem to be robustly tolerant of noise, but if its DTV you're picking up, i'd say there is a small chance that NEC proper earth bonding could play a determining factor in your ability to tune into a particular station. The combinations of ground, aerial antenna, cabling, signal attenuators, and tuner, could be tricky to buzz out, and you might find performance differences between makes of tuners to be more hit an miss than your ground quality.
