Qeunrtiy QRM Eliminator X-Phase HF Bands 1MHz to 30MHz Signal Canceller Aluminum Alloy with and Knob

3. Adjustable: Allows adjustment of the phase angle and amplification to unwanted signals before reaching the front end of the receiver! It is based on a completely innovative concept and cannot be compared with normal "" performance. 2.PPT Control: has a built-in PTT control to keep the canceller connected during transmission. However, an additional auxiliary receiving antenna is required, such as a 2m antenna or only a few meters of wire in the shed. The two antennas receive unwanted signals, resulting in different phases. Features: 1. Convenience: The QRM canceller is inserted from the into the feeder of the antenna without any other modification to the radio. 4. Material: The material is excellent, the shell material is aluminum shell, and the front and rear baffles are: epoxy glass fiber board FR4.