| 摘要 |
FIELD: radio engineering, communication.SUBSTANCE: antenna post for radio relay station comprises: a base made of steel in form of a base plate, a telescopic mast shaft consisting of one fixed section and four movable sections made from duralumin tubes of different diameter, a latch and a reading scale on the base plate, a cross-over winch built into the fixed section, having a drive and a double steel cable wounds on its drum, revolving rings with three lugs made in the top part of the fixed section and each of the four movable sections, a cantilever beam mounted at the top of the fourth movable section, the cantilever beam being fitted with an antenna unit having two antennae, a telescopic mast mounting consisting of six winches, on the axis of each of which there are two drums isolated from each other, on each of which is wound a steel cable of the corresponding guy-wire, six steel poles hammered into the ground at a small angle, on each of which is mounted the corresponding winch; a feeder cable, which is connected through the antenna unit to the first and second antennae, is mounted on the shaft of the mast by braces.EFFECT: providing stable operation of the device in different climatic conditions and shorter time for unfolding the mast.3 cl, 1 dwg |
