对于无线话筒在使用过程中碰到死角（也就是说在一个场子内某一个地方有时收不到信号，有时用手持话筒，人并未走动只是身体稍微晃动一下，信号也可能时有时无），这种事情确实较伤脑筋的，对一般用户来说，也总以为无线话筒质量不好，其实这里有几方面的原因：

For wireless microphone in use process met dead (that is to say in a court in a certain place sometimes fails to receive signals, sometimes with a handheld microphone, did not move only slightly on the body shake, the signal may also from time to time), this kind of thing is really nerve racking, for general users, always think wireless microphone quality is not good. In fact, there are several reasons:

一、有些场子内确实存在干扰源--现在的通讯工具发达，品种多样，如手机、对讲机、无绳电话等等，都存在着互相干扰的情况，而且场内有金属器材、玻璃的反射也会产生这种情况。

A, some drovers do exist the interfering source -- now the communication tools developed, species diversity, such as mobile phone, interphone, cordless telephone, and so on, there is a mutual interference, and venue equipment metal, glass reflection will be generated in this case.

二、有些场子接收条件不好--如场内有立柱阻挡，还有音控室离开会场较远、有墙阻挡或者拐个弯等等，都会影响到信号的正常接收。

Second, some drovers receiving condition is not good, such as floor a block column, as well as sound control room to leave the meeting, a wall blocking or turn a corner and so on, will affect the signal of the normal reception.

碰到这种情况该如何解决呢？下面几种经验性总结供大家参考：

How to solve this situation? Here are some empirical summary for your reference:

1、有的可以换一套频率试试，因有的干扰源可能正好与这套话筒的频率有冲突，换一套频率往往能解决问题。如果场内有立柱等接收环境不太好，尽量购买单发双收（即一个话筒、两根天线）的那种，如SHURE的EUT24/58，因为两根天线的接收范围较大，比如人边走边讲，这时接收机的两个黄灯都亮，说明在全方位内；如果左边的黄灯亮则表示左边的接收天线在你的左边讲话范围内，一旦你走出左边的接收范围，进入右边的范围，右边的黄灯马上点亮，右边的天线马上工作。这样就保证了你的讲话声音被全方位接收

1, some can change a set of frequency to try, because some of the interference source may happen with the microphone of the frequency of conflict, for a set of frequency can often solve the problem. If the venue has a column in the receiving environment is not very good, as far as possible to buy the single double (i.e., a microphone, two antenna) that, such as EUT24/58 Shure, because two antenna reception range of the larger, such as walking about, then the receiver two yellow lights and explain in full range; if the left side of the yellow light, said on the left side of the receiver antenna in your left speech range, once you get out on the left side of the receiver range, scope of the right to enter, on the right side of the yellow light immediately light and the right antenna work immediately. So that you can ensure that the voice of the full reception

2、有时可以变换一下天线的方向、角度等，都能够改善你的接收条件。

2, sometimes you can change the direction of the antenna, angle, etc., can improve your reception conditions.

3、如果接收环境实在太差，可选用多频率可调式无线话筒，象SHUREUC、UD4等。美国SHURE公司最近又推出了二款多频率可调式无线话筒ULXS标准版和ULXP专业版，它与以往的选频方式有所不同，它是先自动扫描一下周围有干扰的频率，把它排除掉，剩下的就是可用的无干扰频率，而且可同时使用20套。

3, if the reception environment is too bad, can choose a multi frequency adjustable wireless microphone, such as SHUREUC, UD4, etc.. American Shure company recently launched the second paragraph of multi frequency adjustable wireless microphone ULXS version and ULXP professional edition, it with the previous frequency vary, it is automatically scan the surrounding interference frequency and put it out, the remaining is available without jamming frequency and also use 20 sets.

4、如果碰到接收条件更苛刻的，如音控室不在会场里，或有柱、墙阻隔等情况，经我们试验，只要延长天线就能解决问题，应急方法如下：取视频电缆线一根，约10~15米，把原来接收机的天线拆下（或自购天线一根）与视频电缆线相连接，再把天线安装在你经过试验并能接收到信号的地方即可。当然，这需要解决工艺问题，电缆线尽可能走暗线，如果走明线则要整齐和规范，而且天线最好做得好看一些，既不影响接收又美观牢固。

4, if you encounter receive more harsh terms, such as sound control room is not in the hall or column, wall barrier, etc., by our test, as long as extending the antenna will be able to solve the problem, emergency method is as follows: take a video cable, about 10 to 15 meters, the original receiver antenna to remove (or self purchase antenna) and video cable connected the antenna mounted on you after the experiment and received signal can be. Of course, this need to solve process problems, cable as far as possible go dark lines, if go to the open wire to tidy and standard, and the antenna is best done some good-looking, which does not affect the receiving and solid appearance.