athis product adopts telescoping antenna to receive signal for FM or SW. when the signal is weak, you can extend the antenna or change the direction of the antenna to find the optimal position, thus can improve the reception effect. whereas, shrink the antenna when the signal is strong 这个...
Comparison and validation is used during the transmission of a signal from a probe in a well shaft or pipe in a gas storage or transportation system. Effects of high level noise signals from electricity grid networks and railways are reduced, permitting accurate determination of water level. A ...
candidates, there was a need to install FM radio signal repeaters to improve radio reception in the halls of 67 schools. legco.gov.hk 為 盡量減少在舉行聆聽考試期間對學校課堂/活動造成的滋擾,以 及把試場設於方便考生前往的地點,當局需要安裝超短波調頻信 號轉發器,藉此改善67個學校禮堂的無 線 電信...
Comparison and validation is used during the transmission of a signal from a probe in a well shaft or pipe in a gas storage or transportation system. Effects of high level noise signals from electricity grid networks and railways are reduced, permitting accurate determination of water level. A ...