| 摘要 |
PURPOSE:To open a relay broadcast earth station within a short time by containing amount while being folded upright at transportation, fixing a reflec tion mirror center part to the mount normally, incorporating a primary radiator together with a sub reflection mirror and mounting it to the center of the reflec tion mirror with one touch. CONSTITUTION:The antenna is of Cassegra in type and the main reflection mirror 1 is an axial symmetrical parabola reflection mirror. A primary radiator 2 has a sub reflection mirror 2a and a primary horn 2b, and the sub reflection mirror 2a is fixed to the tip and the primary aradiator 2 is attached and detached to/from the center of the main reflection mirror 1 in one touch. Fur ther, the main reflection mirror center 1a is fixed normally to a folded maount 3 and contained upright to a base 4 fixed to the floor of a cabin at transporta tion. When the antenna reaches a disaster-stricken district and a satellite relay broadcast earth station is opened, a pin 5 fixing the mount 3 to the base 4 is removed, the mount 3 is turned by 90 deg. around a pin bolt 6 and installed to the cabin floor via legs 7. Then the primary radiator 2 is fitted to the center of the main reflection mirror center part 1a. |
