1、The QRM eliminator adopts excellent PCB board, which has been precisely assembled and has stable performance. 2、Built in PTT control, to maintain efficient connection of the canceller during transmission, with stable operation. 3、Allows adjustment of the phase angle and amplification rate to eliminate unwanted signals before they reach the front end of the receiver. 4、The QRM canceller is inserted into the feeder of the antenna without additional modifications to the radio. 5、The kit contains 25 small accessories, which are fully functional and easy to use, and can be used for various radio tests. Item Type: QRM Eliminator Material: PCB Principle: The QRM eliminater is inserted into the antenna feeder without any other modification to the radio. The box has a built in PTT control to keep the eliminater connected during transmission. However, an additional auxiliary receiving antenna is required, such as a 2M antenna or a wire only a few meters in the shed. The two antennas receive unwanted signals, resulting in different phases. The QRM canceller now allows adjustment of phase angle and amplification to cancel unwanted signals before they reach the front end of the receiver. It is based on a completely innovative concept and cannot be compared to normal silencer performance. 1 x Eliminator Board 1 x Accessory Pack(25pcs)