Wave of 2m of spare broadcasting station 4 unit pane are wireless

Spare broadcasting station is spare radio lover use technology of research radio news report, have technical communication, training and the tool that surpass unexpectedly. The pane that article introduction uses at 2m wave communication is wireless (Cubical Quad Antenna) . Cooperate aerial to rotate implement with azimuth controller can effective ground and lover of spare broadcasting station are contacted.

Pane antenna provides tropism of in the right way strong, gain matchs high, easily and easy made good point, it is an introduction with 145MHz now of antenna of 4 unit pane make. If the graph is shown 1 times, pane antenna by bring Zhen Zihe of Xiang Zhenzi, active to reflex brace up child form. Zhenzi length and span dimension all mark go up at the graph, the unit is Mm, mix considering the function that defy wind it is easy to make, the author employs aluminium alloy of city carry out do brace up child. Brace up child amount to method is shown 2 times like the graph, start to talk the one aspect of the matter of pane, get a few alveolus, so that adjust the circumference of whole casing. Annulus oxygen is used among prop up, such one brings Xiang Zhenzi to had been done. Manage together, can make another bring Xiang Zhenzi and reflex brace up child. Active brace up child the practice is shown 3 times like the graph, pane at the same time intermediate mouth, two end are secured in annulus oxygen on, choose route of join make a present of as feed.

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Aerial rail uses the aluminium alloy of city carry out of 25mmX25mm to just be in charge of, rail is long make an appointment with 1.2m. Each brace up child the join with rail but first annulus oxygen fixed go up in canal of one small Duan Fang, secure square canal on rail again next. The active of this antenna brace up child feed point is OK and direct with 50 ohm photograph of radio frequency cable joins, need not any matching implement. Active must notice when installation brace up child the placement of feed edge (graph 4) . If pursue,radio lover is used to 2m wave band 4 (B) shows way is placed. After wireless installation ends, can adjust, need to going up only catapult and standing wave compare a list, active of increase and decrease brace up child reach each brace up child length can make SWR ＝ 1.

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