module antenna_adsb(){
    color([0.5,0.5,0.5]){
        cylinder(h=4, r=15);
        cylinder(20, 15, 4);
        cylinder(30, 10, 2);
        cylinder(41, 3, 3);
        cylinder(155, 1, 1);
        translate([0, 0, 145]){
            cylinder(10, 2, 2);
        }
    }
}

module antenna_gps(){
    color([0.5,0.5,0.5]){
        translate([0, 0, 4.5]){
            cube([28, 28, 9], center=true);
        }
    }
}