HF mass for the HF radio antenna FA250, powder-coated aluminum disc, 4mm thick, 175mm diameter. This HF mass optimizes the transmission and reception performance of the HF antenna FA250, as its diameter is twice the length of the antenna plus its rod diameter. A recessed steel disc with the diameter of the magnetic antenna base is pressed into the center. This makes it easy to center the FA250 here. The aluminum disc has a hole and an elongated hole for attachment to the wall.
