before you go rewiring or selling your TT, I'd suggest doing a couple of tests.
1.try to get another TT, with a different (shielded?) cable into your system to see if it really is better
2.unplug the TT, leave on the phono setting and see if there's still RFI - if so, it's the amp that needs better shielding and you're just hearing it on the phone setting because the gain is much higher
I used to have terrible RFI in my last place. It was coming through the windows! Even wrapping the TT cable with shielding didn't help. I eventually had to move the stereo (minus the speakers) to the floor underneath (below ground level) to solve the problem.
Some other things that you might play around with: get a sheet of steel (baking sheet?) or some chicken wire and see if you can affect the RFI by moving it around your components. Also, rotating components 90 degrees sometimes helps. It can be helpful to 'dress' your cables (i.e. supend them, make sure they don't intertwine with power cords etc.). Get a friend to listen as you move your interconnects around to see what helps. Also, ask local audiophiles what they know about RFI hot spots in your area. Good luck!
1.try to get another TT, with a different (shielded?) cable into your system to see if it really is better
2.unplug the TT, leave on the phono setting and see if there's still RFI - if so, it's the amp that needs better shielding and you're just hearing it on the phone setting because the gain is much higher
I used to have terrible RFI in my last place. It was coming through the windows! Even wrapping the TT cable with shielding didn't help. I eventually had to move the stereo (minus the speakers) to the floor underneath (below ground level) to solve the problem.
Some other things that you might play around with: get a sheet of steel (baking sheet?) or some chicken wire and see if you can affect the RFI by moving it around your components. Also, rotating components 90 degrees sometimes helps. It can be helpful to 'dress' your cables (i.e. supend them, make sure they don't intertwine with power cords etc.). Get a friend to listen as you move your interconnects around to see what helps. Also, ask local audiophiles what they know about RFI hot spots in your area. Good luck!