The -30+ loop antenna is a popular broadband antenna ideal for shortwave listeners and amateur radio operators (HAM) in urban environments, suitable for use on balconies, rooftops, and similar locations. This portable indoor loop antenna is a simple kit that includes all necessary components. Featuring a modular design, it is easy to install in limited spaces such as balconies and roofs. It offers excellent directivity, helping to reduce noise and improve signal-to-noise ratio. By adjusting the antenna's orientation, users can align the null point with interfering signals, minimizing specific near-field interference for optimal performance. Noise suppression can reach up to 30 dB compared to longwire antennas, enabling the reception of weak signals buried in noise. The figure-8 radiation pattern provides deep nulls to further reduce interference. Do not connect this antenna to a transmitter, as it may damage the preamplifier. Shortwave radio listening is an engaging hobby, but urban dwellers often face challenges due to poor reception. Weak or unusable signals, even from strong stations, are common due to high levels of urban radio frequency interference (RFI). This interference stems from various sources including LCD screens, Wi-Fi routers, low-quality power adapters, Wi-Fi extenders, and electric vehicle chargers, all contributing to noise across the shortwave spectrum. While outdoor longwire antennas may perform better, they are often impractical for apartment or condo living. The -30+ magnetic loop antenna offers a practical solution for balcony installations. Compact, low-profile design that is discreet and unobtrusive Frequency range: 500 kHz to 30 MHz Powered via USB for convenient operation. Includes a feeder cable for easy setup No manual tuning required Color: Black Material: Plastic Package Contents: 1 x Antenna amplifier 1 x Stainless steel radiator 1 x Bias power supply 1 x USB cable 0.8m (random color) 1 x 60cm SMA jumper 1 x BNC connector Note: Light reflection and display differences may cause slight variations between the product color in images and the actual item. Measurement tolerance: +/- 1-3 cm. Only the items listed above are included; other accessories are not part of the package.