Yep, the output cap is ok 
If I measure at the start of the cable everything is fine but when I measure at the end of it the distortion appears. This leads me to think that the antenna idea is pretty possible.
Yep, the output cap is ok If I measure at the start of the cable everything is fine but when I measure at the end of it the distortion appears. This leads me to think that the antenna idea is pretty possible.