I had homebrewed an experimental 6m rpt and heliax duplexer about 12 years ago.
I had tried a J-pole built with a U shaped copper base, then having a 11 meter fiberglass whip to make up the rest of the stinger. Also built a single 5/8 wave G.P. from same parts. I constructed a similar ant to the Diamond from a hamfest 11 meter base ant, It whipped around a lot in the wind, but the gain was noticeably better than the single 5/8 or J pole. The collinear seemed to penetrate a bit better into the Ohio river valley. ( Pittsburgh Pa area ) Alas it all came to an end due to a massive lightning storm. N3SDO
