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在提及DJ-X3之前,我们必须提一下它的前辈DJ-X2。这款生产于1990年的手持宽频接收机在广大广播爱好者中享有很好的声誉和口碑。在其停产之后,依然有不少爱好者四处追寻DJ-X2,希望得以珍藏。之后,ALINCO陆续推出的DJ-X3和DJ-X7代替了DJ-X2的位置。DJ-X2和DJ-X3的主要差别在于:DJ-X2机身比DJ-X3更薄;采用充电电池供电(DJ-X3E采用普通电池供电),但是DJ-X2的频率范围略小(0.5kHz～1000MHz),音质亦不如DJ-X3。
Before mentioning DJ-X3, we must mention its predecessor DJ-X2. The hand-held broadband receiver, produced in 1990, enjoys a good reputation and reputation among broadcasters. After its cut-off, there are still many fans around looking for DJ-X2, hoping to be preserved. Afterwards, ALINCO successively released DJ-X3 and DJ-X7 instead of DJ-X2. The main differences between the DJ-X2 and the DJ-X3 are: The DJ-X2 is thinner than the DJ-X3; it is powered by a rechargeable battery (the DJ-X3E is powered by an ordinary battery), but the frequency range of the DJ-X2 is slightly smaller ~ 1000MHz), the sound quality is not as DJ-X3.