Modeled my home brew omni after a Starduster. Had the hub friend gave me. Used scrap aluminum tubing. Broke the hub, fabricated another from SS. Radiator got tore up, took 102" SS Whip and spring off truck. Mounted that. I call it a StarBuster......View attachment 36516
Seeing your antenna makes me want to build one similar to yours. I even have a star duster hub that I got for free, that I can use.