Hello, At present I have an inverted "L", 100+ feet vertical with 4 elevated radials, about 130 feet long at 10 feet in height. I am about to construct a CM choke. On hand, I have 4, Amidon 2.4 inch cores. From the reading, it seems that I should have 5 cores and about 5 turns of RG8 coax. I can I get away with 4 cores? Carol