| 摘要 |
<P>PROBLEM TO BE SOLVED: To improve supporting rigidity, and to suppress an incline of an antenna in a snowy region when receiving a horizontally polarized wave. Ž<P>SOLUTION: An antenna fixing auxiliary attachment 1 is provided to a mast fitting attachment 13 with an antenna auxiliary arm 15 pinched and held between them. The antenna fixing auxiliary attachment 1 has a body portion 1A having an L-shaped cross section, and engagement portions 1B provided on both sides in a longitudinal direction of the body portion 1A, each having an inverse U-shaped cross section to removably engage with a first member 18 (mast fitting attachment 13). On the body portion 1A, there are formed slots 1Aa at positions corresponding to respective engagement portions 1B for changing horizontally polarized wave reception and vertically polarized wave reception. By utilizing the slots 1Aa, the antenna fixing auxiliary attachment 1 is fastened to the mast fitting attachment 13 with a fixing bolt 21. The fixing bolts 21 also act as a bolt for fixing the mast fitting attachment 13 to the antenna auxiliary arm 15. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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