Kenwood KMC-25A

MIL-SPEC, Noise canceling Speaker mic[Intrinsically Safe Approved Accessory]Note: KMC-25 is not compatible with the TK-190 due to the effects of RF at low band frequencies; the KMC-25A is the compatible model. The KMC-26 Speaker microphone with antenna connector CANNOT be used due to the inadequate ground plane properties on a speaker microphone at low band frequencies (the TK-190 does not have an RF pin on its accessory connector).