某型飞机在试飞中发现,在使用机载电台与塔台进行通话联络时,塔台接收到的语音信号出现间断和不清晰现象。针对故障现象,我们经分析研究,查明了塔台接收到的语音间断和不清晰的原因,并通过对机内通话器控制盒电台调制放大电路部分电路的改进,解决了语音间断和不清晰的问题。 During a flight test of a certain type of aircraft, it was found that the voice signal received by the tower was intermittent and unclear when using airborne radios to communicate with the tower. In view of the fault phenomenon, we have analyzed and studied and found out the voice interruption and the unclear reason that the tower receives, and through the improvement to the part of the circuit of the modulating amplifying circuit of the control box of the internal talker, solved the problem of voice interruption and unclear problem.