Introduce: . . . . . . . . . 8 wood of.YAGI(aerial) in radio transmission efficiency, should be a kind of the best antenna, point to character because of what this kind of antenna has tall gain, so extensive use is ordering the news report of S

The emissive fundamental of aerial is: Report travel in order to approach smooth rate in conductor, when the discontinuous dot in encountering conductor, it can be reflexed to answer signal source. If electric current is to hand in,change, and reflex

A lot of antenna if half Zhen Zitian line, amount to antenna of Zhen Zitian line, round is balance feed, they have two feed place, they have a characteristic: The signal tension that two feed hint (or electric current) phasic it is each other is in o

J pole child (J-Pole) aerial blasts off by wave of a 1/2 yuan match with drive of wave of a 1/4 implement form, it is equal in value at from extreme drive occasionally extremely aerial, because of its conductor shows J model, reason calls J pole chil

Aerial is converter of a kind of energy, its action is the signal of high frequency concussion that exports machine of post a letter changeover is electromagnetic wave to the radiate in sky, on the other hand, transmit the electromagnetic wave change

J pole child (J-Pole) aerial blasts off by wave of a 1/2 yuan (part of right graph A) match with drive of wave of a 1/4 implement (part of right graph B) form, it is equal in value at from extreme drive occasionally extremely aerial, because of its c

Aerial is basic concept Aerial is the ear of FM DX, faint electric wave enters receiver through line of make a present of from aerial, ability lets us hear the voice of distance broadcasting station. One receives systematic stand or fall, aerial took

Main component is commonly used shortwave antenna 3 kinds, the first kind is perpendicular antenna (GP) , the 2nd kind is occasionally class antenna (DP) , the 3rd kind is 8 wood antenna (YAGI) . Besides, still have circle model, diamond, dish etc, b