水平极化还是垂直极化？ [复制链接]

2m ssb环亚通联即将到来。2m通讯中天线的极化方式有什么讲究呢？在2m ssb环亚通联中大家都用哪种极化方式呢？

台湾同胞们比赛天线片片.

习惯上是水平极化

可是日本ham用垂直极化耶

水平与垂直相差不大,老天爷不帮忙转也没用,

转贴：

on hf the radiation pattern breaks up on skip making it random at the recieve end. on vhf however, the pattern remains fairly consistant, the problem is that casual (and some dedicated) vhf users don't understand that and will insist that it's not true. during band openings i routinely will copy weak dx stations that can not copy me when they are vertical (i use horizontal, and run qrp), but when i change polarization their signal comes way up and mine can be heard by them. yet when i point out that until i changed polarization, we couldn't work. the other station always insists that there's another reason having nothing to do with polarization, but they never know what (i've heard some pretty wild guesses though).

kb3gty


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基于大部分干扰源都是垂直极化，而且垂直极化和水平极化理论上互相相差20db，使用水平极化可以尽量避开垂直极化的本地干扰，远距离信号经过电离层折射后，或者已经包含了垂直极化和水平极化，所以已经变得无关紧要了。

es层的传播，极化方式不会保持；对流层散射，极化方式保持得好；大气波导，有人说极化方式很可能保持。

从2m yagi的架设看，双列天线极少人架设成水平极化，单列和2×2的天线水平、垂直都方便架设。

我刚才到国外的论坛看了一下，似乎fm喜欢架设成垂直，ssb/cw喜欢架设成水平。fm的通联对象中很大比例是视距内垂直极化的车载台和手持机，我理解为人们习惯近距离的用垂直，远距离的用水平。