160m antenna at E73M is 26m (85 feet) Shunt fed tower with Gamma match.Tower is toped with 4 element Yagi for 20m and 2 element for 40m (XM240). As shown on left picture Omega capacitor is enclosed in "NEMA" PVC box, #10 Gamma wire is attached at 19 meters and spaced with metal arms with PVC tubes as insulators. Blue box on the left is Stackmatch for 40m antennas.
Tower has eight 10 meteres long in ground radials of grounding strips (european standards made of iron and covered by Zinc) and 32 on the ground wire radials each 15 meters long ( 49 feet).
Below see informative articles by N6LF on radial length