The QRM Canceller X Set plugs directly into the antenna without any modifications to the radio. Function and operation Allows adjusting the phase angles and amplification to remove unwanted signals before they reach the receiver front end. Enhances communication by effectively reducing interferences across the 130 MHz frequency range, delivering a clearer and more stable connection. Includes a control that keeps the Canceller connected during operation. Compatibility and setup Designed for simple integration with standard antenna configurations; no changes to the radio are required. Requires an auxiliary receiving antenna in addition to the main antenna, such as a 2meter antenna or a few meters of wire placed in a shed. How it works Two antennas receive unwanted signals, resulting in different phase; the Canceller uses these phase differences to cancel the interference before it enters the receiver. Use scenarios Amateur radio operators on 130 MHz bands dealing with QRM in home or portable setups. Receiving weak signals in environments with nearby electrical noise or devices causing interference. Longwire or multiantenna installations where multiple signal paths create phase differences and interference. Key attributes Function: cancels QRM by adjusting phase and gain prior to the receiver front end. Compatibility: plugandplay with standard antenna setups; no radio modifications required. Frequency range: effective across 130 MHz. Dependency: requires two antennas; includes control for stable operation. Size and material: not specified in the available information.