FM DX three single eight wooden antennas ----- fm yagi antenna

Middle wave antenna production, am Antenna Keywords: Middle wave antenna production Middle wave antenna production 1, material: bamboo pole, don't feel too thick, it can be supported. At first, I plan to use PVC water pipes, for the province to change to bamboo pole. Why don't you use the wood? Because of the hollow things. Wire a little. 0.6mm fine wire is about 15 meters. How much is calculated. 365P air doubles. 2, tool: 1 pliers, 1 steel saw bar. Production process: 1. Take 62cm of the bamboo roast beam, and the upper 95cm bottom end 34cm is used for the fixed antenna. 2. Start the beam from the middle to the 2nd measurement of 30cm, to the center, one cm saw saw, the saw, the saw saw is used for the mounting power cord, do not saw too deep, saw bamboo pole diameter 1/2 to 1/3 Phase. The vertical beam is also such a sawable slit, pay attention to the bottom 35cm for fixing antenna when the shave is measured. The beam and the vertical beam each saw 18 oblique seams. This allows you to get around 18 laps. 3, tie the bamboo pole into a cross shape. Note this step, you should cross the bamboo pole to get 1/2 of the bamboo pole diameter. This ensures that the bamboo raft is bound, the front edge of the front beam and the strip of the bamboo pole is substantially on a plane. 4, put the fine wire to the bamboo pole, after 18 laps, the 2 heads of the line will pick up the double-linked tablet and movable. Two-set 2 units of the two batches of the air is shorted to be parallel. 5, so the antenna is made, then fixed, I used 1 铁 铁 子 装 装 装 装 装 装 装 装 装 装 装6. When using, first adjust the radio to the specified frequency, then adjust the air of the antenna, until the radio receives the best. If your radio has a medium-wave antenna interface, you can pass around the 1-turn secondary coil in the middle of the antenna back antenna plane, and the coil 2 is connected to the antenna interface. Very simple, very easy to use, I do this total for less than half a day. The radio magnetic rod antenna direction is vertically close to the antenna plane. My land is not received in a medium wave in the room, and you can collect a lot of sets.

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