Dāng you in car shàng using radio shí, will found signal will relative weaknesses, this is because body surrounded by is surrounded with has shield, this small antenna is put signal introduction source to outside makes signal appropriate enhanced, (like dāng in a environment xià not loaded shí of distance for 1 km, loaded child zhī hòu of distance probably will enhanced 3,500 meters, open to can increased 500 meters to 1-kilometer), distance specific environment specific analysis! (The distance is affected by many factors, mainly environmental, electrical interference, power, receiver sensitivity, slams, etc)
Shop does not provide specific leads, because different cars in different alignment, specific consultation got off line.
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China, Yiwu China Commodity Market (Yiwu wholesale market), the
World's Largest Commodities Trading Center Online.