The RM Italy 27/586 is a low-pass TVI (Television Interference) filter designed to suppress harmonic and spurious emissions above 30 MHz from HF and CB radio transmitters. By passing signals up to 30 MHz with minimal loss while attenuating everything above — including VHF and UHF TV frequencies — it helps prevent interference to television reception caused by transmitter harmonics.Rated at 500W and fitted with SO-239 sockets on both input and output, it connects in-line between your transceiver and antenna with no modification required. A straightforward solution for operators experiencing TVI complaints or operating near sensitive TV reception equipment.Key Features Type: Low-pass TVI filter Cut-off frequency: 30 MHz Pass band: 0–30 MHz (insertion loss: 0.5 dB) Attenuation: >80 dB at 60–900 MHz Max input power: 500W Impedance: 50Ω Connectors: 2 × SO-239 (UHF) Technical Specifications Cut-off frequency: 30 MHz Insertion loss: 0.5 dB (0–30 MHz) Attenuation: >80 dB (60–900 MHz) Max input power: 500W Impedance: 50Ω Connectors: 2 × SO-239 UHF sockets