[not third] as person of V/U wave band gas increases, abstained 8 wood antenna to become popular topic again. Last centuries 20 time, the 8 wood of Japanese northeast university are beautiful second with eaves two people invented Tian Tai 郞 this kind

In a lot of moment, to reduce aerial take up space, we often need to reduce the size of aerial. So how to fall in circumstance of aerial dimension reductive, does aerial still produce resonance well and truly? This is the issue that discusses below u

100kHz-30MHz active antenna The spare radio lover that lives in the city often accepts the restriction of aerial and cannot satisfactory reception in distance, the signal that shortwave broadcasting station transmits. Because performance is good,this

Half semmetry brace up child with line of make a present of match General reception equipment (like the television) its input characteristic impedance to be 75 (lopsided pattern) or 300 balance type, half semmetry brace up child output is: M blows?5

A lot of netizens had made many emissive circuit edition, also had used a lot of antenna, but have a fever friendly people always seek efficient emissive antenna, this kind of crossed antenna of the following introduction is the emissive antenna with

Be in a few in in the high frequency emissive equipment of small-power, use normally multilayer cross half twists and turns adds up to Zhen Zifa to shoot aerial. The characteristic of this kind of antenna is a structure simple erect is convenient, it

Of cross emissive antenna deserve to receive Be in a few in in the high frequency emissive equipment of small-power, use normally multilayer cross half twists and turns adds up to Zhen Zifa to shoot aerial. The characteristic of this kind of antenna

Not long ago, BA4SE, BD4SF, BD4SBP 3 contributive exert oneself, for our BY4SJX erect a three wave band that design by BA4SE pour V antenna, use effect is admirable, the block wave of every wave band is close to 7M, 14M, 21M almost 1. Ask for so that