The SIMPLE 2m/440 Copper pipe "J"
Can you use a pipe cutter or a hack saw, can you solder – then here is how to build a SIMPLE ”J” antenna that will more than double your 2 meter (and even 440) performance! by Dale “Kuby” Kubichek, N6JSX
Simple_J.pdf, The Simple 144/440 Copper Pipe J