Original poster: "Adam Horden" <electronicmadman-at-blueyonder.co.uk> Hi Guys, I want to use a PIC in my power control electronics for my vttc (for timing etc) but dont know if a PIC will be affected by the HVRF. The circuit will be housed in a metal encloser with a very smooth power supply. Has any one used a PIC within 6inches of a VTTC? Adam