The -30+ (plus) loop antenna is compact in size, which makes it convenient and stable to set up, can be installed on balconies, rooftops, and other places easily. ^^ It is an effective antenna for shortwave listeners (SWL) and amateur radio enthusiasts (HAM) to receive mediumwave and shortwave in limited living areas to receive medium and shortwave. ^^ Frequency coverage is from 0.5MH z to 30 MHz. ^^ Outstanding directionality can help reducing noise and improving SNR ratio, and can dig out weak signals that are overwhelmed by noise when the conventional antennas are received.
^^ By rotating the antenna so that the dummy point of the antenna is aligned with the interference signal, the specific near-field interference can be attenuated to the maximum. ^^ ^^ ^^ ^^ ^^