发个新天线

58444

http://www.tvantennaplans.com/Build your own HDTV Antenna PlansHere's what you need to get started:

• 22 inch section of 2x3 or 1x3 board
• 18 Screws
• 18 Washers, sized to fit on the screws to clamp down wire
• 15 feet of wire. Roughly 5 feet of copper three conductor house wiring will do fine. Coat-hangers can work if stripped of paint at all connections.
• Reflector grid (Mesh like reflective metallic material.) Two 15x9 grill screens work well for a few dollars. (See first video below.)
• One Balun - A thing with a coax plug on one side, two wires with screw holes on the other. These are commonly used to attach old TV's to coax antenna's (or cable.) They are inexpensive (I've seen them in bulk for as little as 30 cents each), and commonly available. My local dollar store carries them!
  

Tools:

• Drill
• Screw driver, or screw bit for drill
• Wire cutters
• Pliers
  

Step 1 - Find, Measure and Mark a piece of wood

• Find a board similar to a 2x3 or 1x3
• Mark lines at the marks pictured below
  

Step 2 - Make 8 wire V's out of wire

• Cut eight 14" long sections of wire.
• Find the center, and bend each wire into two 7" long legs, with a 3" gap. (7" legs with a 3" gap is important!)
  

Step 3 - Attach wires to board

• Attach the "V" wires the to board using screws and washers, as shown in the image.
• Zig-Zag the two connection wires down and across the center of the board as shown. It is important that when the wires cross each other, they do not touch.
  

Step 4 - Attach Reflector

• Attach the Reflectors to the back using screws. The Reflectors must not touch the "V" wires.
  

Step 5 - Attach the Balun

• Attach the Balun to the two center sections of wire. Make sure the two connections do not touch each other.
  

Step 6 - You're Done! Test your antenna!

• Attach your antenna to your HDTV using a coax cable, and see how it works!
  

These plans to ugly for you?These plans are functional, but some people describe them as ugly...and they'd be right. The same core technical design and base measurements can be used in other ways. Here's one example I made:





这个天线比例缩放








这个天线 的youtube     
http://www.youtube.com/watch?v=JU5mC8tdUd8&list=UUqrUE5x2iM_lKQqwaH09cnw&index=10

王人禾

专利产品，仿冒不究。。。

liuchang980

上个测评图吧         

58444

-不是我的

Eilling

LZ号称多少DB

我爱白丝

牛B 开眼了呀

EWSA2012

蜈蚣太子

tzm213294

好大的蜈蚣

1qq

牛B 开眼了

shilla

这…………要是我把这个挂外面估计会有大把的人咨询的

892733324

;P;P;P;P;P

lukia

难看了点，不知道信号好不好！