Have to build marine antenna, thus for 159.5 MHz the vertical dipole is just what is needed (sometimes called bazooka with stright-lined contraweight). Took the H-2000 very high quality cable (din 2.4 mm, D insul 7 mm, Dout 10.2 mm, 50 Ohm) and get clean of sock the upper 45 cm. Then down I tried with soch but it looks ugly, tried copper pipe but then the aoverall plastic pipe for beauty becomes too massive, thus I found the idea to solder 12 small wires from end of cable sock downward 45 cm. Now construction is suitable for din 16 mm santech whitepipe. Thus antenna mechanics is brilliant yet the VNA shown the valley of tears. Whole the VSWR picture is full of hedgehog teethes every 1 MHz the one after one. And average SWR about 6...7. Except the one abyss with SWR is 1.5 at about 110 MHz. Thus, logically, I suspected the shortening factor effect so bite off 5 mm both ends, then again, then 1 cm, then 1 inch until had a 25 cm at the hands. The blossoming 1.5 valley still happened at 110 MHz and nothing was changed. So, what a heck? Of course, such antenna theoretically have about 60 Ohms, thus the circulating power between antenna and cable is inevitable, but not very strong. Maybe the cable length (about 15 meters) is responisible, but I cannot cut it shorter to avoid the rain and salt coming-in. So - what are Your ideas what I should do?