I suspect it's your gear, or some piece of your gear(We all have noisy fridges), which is broken, improperly designed, improperly shielded, or even with "wrong" cabling acting as an antenna or "receiver"(Try "subbing" or eliminating, where you can).
"True" RF noise? A friend of mine found his computer's router was causing horrible noise(With his battery-powered, AM radio, tuned to an unused frequency, used like a "geiger counter"!). Replaced the router. All was well. Others have "followed" the RF trail to a "bad"(Arcing) connector on a power company pole, blocks away(Call your power company)!
If YOUR electrician determines YOUR ground rod(Or AC ground system) to be "bad", YOUR landlord should agree to a repair - and PAY FOR IT - AND your cost for the electrician! Or move. Water pipes often, these days, have plastic somewhere in the system, like at the water meter, sometimes with little, thin "jumper wires" - NOT GOOD! An electrician can check for "actual" ground at your rod, water pipe - and your entire ground system. Of course, having TWO grounds - building rod AND pipe is NOT GOOD(More than one ground tends to cause ground loops or even act as an "antenna" for RF)! One good AC ground, with well-shielded gear, is all that's needed.
Point is: If you have a "good" ground system and we all have similar noise sources which don't cause problems, it's your gear or the installation of same...
TG