I am getting dit dat from a ham operater keying somewhere. I just ordered some material that is supposed to shield from RF. I have a
SOTA sapphire turntable and Hana low output moving coil on a unipivot Ultracraft tonearm. It is a function of where the cartridge is located above the turntable. It is highest when not above the turntable platter but outboard of the record perimeter the noise has some varation in volume and stereo channel it is on depending on the location over the turntable. It does not disappear at high volume but is still apparent over mostly the outer edge of the platter but over the outer inch or two of record grooves.
I have tried different tonearm pipes(the tonearm has changable "pipes" not changable headshells), and tonearm bases. It is present on a Hana low output moving coil and also on a moving magnet Grado mounted on a second tonearm pipe. Different tone arm cables make a minimal difference in the amount of the noise. I even tried adding ferrite chokes over my tonearm cables
Any thoughts?
SOTA sapphire turntable and Hana low output moving coil on a unipivot Ultracraft tonearm. It is a function of where the cartridge is located above the turntable. It is highest when not above the turntable platter but outboard of the record perimeter the noise has some varation in volume and stereo channel it is on depending on the location over the turntable. It does not disappear at high volume but is still apparent over mostly the outer edge of the platter but over the outer inch or two of record grooves.
I have tried different tonearm pipes(the tonearm has changable "pipes" not changable headshells), and tonearm bases. It is present on a Hana low output moving coil and also on a moving magnet Grado mounted on a second tonearm pipe. Different tone arm cables make a minimal difference in the amount of the noise. I even tried adding ferrite chokes over my tonearm cables
Any thoughts?