Feature 1 A broadband antenna, very suitable for shortwave listeners (SWL) and amateur wireless enthusiasts (HAM). Able to enjoy medium and shortwave in cities with limited space such as balconies and roofs 2 The user can also change the direction of the antenna by himself, so that the dummy point of the antenna is aligned with the interference signal to minimize specific near field interference 3 With modular design, can be easily and conveniently installed in limited spaces such as balconies and roofs. Directivity can help users reduce noise and improve signal to noise ratio 4 With a small and compact design, which is not easy to attract the attention of others, and there is no need to worry about opposition from neighbors and the property after installation 5 Adopting stainless steel wake up vibrator and rainproof case for outdoor use, easy to install and maintain, and the power supply adopts typical 12V. with simple operation and good concealmentParameter Parameter ValueModule ModelHF05-30 Loop AntennaModule Type Active Shortwave AntennaModule Power SupplyDC+12VOperating Frequency Range0.5MHz30MHzMaximum Output Power-15dBmNoise Figure1.5dBModule Input and Output InterfaceSMAModule ApplicationVarious (medium and shortwave SDR antennas, RTL SDR receiver antennas, etc.)Module Interface TypeOutput SMA Interface Package List1 x Antenna Module1 x Loop AntennaNote1. This product does not provide PVC pipes to support the antenna. Users need to purchase PVC pipes or use any bamboo poles, wooden poles, etc., to support the antenna. They cannot be metal.2. It is forbidden to connect the HF0530 loop antenna to the transmitter for this product, because it will cause permanent damage to the preamplifier.3. When this product is shipped, a label will be affixed to the Bias Tee with the label facing you. The upper SMA interface is connected to the antenna board, and the lower SMA interface is connected to the To Receiver.