Original poster: "Rich" <rdjmgmt@xxxxxxxxxx>I want to build my 2nd coil this year and I have a question on the secondary diameter.
Power will be 13Kv 150ma transformer , RQ spark gap, MMC of C/D caps at 30.My secondary can be a 9" dia mailing tube and 20ga silver plated stranded wire with thin insulation or
6" PVC with 24ga mag wire. Any pros or cons on the secondary Rich