Getting ready to start a lindenblad project. 70cm Parasitic lindenblad and for 2meters, an EZ-lindenblad. I dont understand why I would need two for each band (1 LHCP and 1 RHCP) if I do at all. Is it necessary to have one for each polarity on each band? This doesnt make any sense to me, can someone please clarify this for me. Thanks in advance.