[ke0me]

After suffering for many months trying to intermittently tackle my S9 noise problem, I'm taking a step back.

I want to try to identify what type of noise it is , where it's coming from, and do a thorough and systematic process to eliminate it.

Station- IC-7200, Alinco dmv-330 power supply, tvi filter, MFJ tuner
Each piece has a ground lead from the ground terminal to a common ground point, then that point goes on a single wire to the outside ground, a 4 ft copper ground rod.

I'm in a ground floor apartment right now, the ground run is about 10-12 ft from radio to rod.

Power supply ac cable has snap on Toroid filters installed

The noise sounds like a constant "static" at S-9 to 20 over.( with all noise filters and blankers ON)
All the time
All hf bands
Inside the rv
Outside the rv
Inside 2 different apartments
Using long wire antenna
Using Alpha vertical on tripod
Using tar heel II mounted on balcony

Random ideas ( some will seem strange) tried with no success:
Used 2 prong plug in AC outlet
Turned off cable modem, phone chargers
Turned off fluorescent and led lites
Lifted ground from ground rod, no change!

At this point I'm getting frustrated.

Would appreciate any suggestions to start identifying where noise comes from.