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Label Italy FDB/1033-M is a 2kW triple-cavity FM bandpass filter with 7/16 DIN connectors, adjustable 400–1,000kHz bandwidth, 50-ohm impedance and insertion loss below 0.4dB.
$ 1,804.00
Label Italy FDB/1033-M – 2 kW Triple-Cavity FM Bandpass Filter with 7/16 DIN Connectors provides frequency-selective filtering between an FM transmitter and antenna. Rated at 2,000 W, it supports operating frequencies within 87.5–108 MHz. Three coupled coaxial cavities form a bandpass response, helping reduce unwanted emissions outside the selected passband.
The Label Italy FDB/1033-M filter uses quarter-wave, high-Q cavities with variable coupling. A bandwidth control adjusts selectivity, with a published −3 dB bandwidth range of 400–1,000 kHz. Specify the station frequency and required response when ordering. The 87.5–108 MHz figure describes the operating-frequency range, not a passband that simultaneously carries the entire FM broadcast band.
Label Italy FDB/1033-M provides 7/16 DIN input and output connections for integration into a 50-ohm transmission system. The manufacturer specifies VSWR below 1.15:1 and insertion loss below 0.4 dB. These figures describe impedance matching and passband attenuation; they do not establish rejection at every frequency offset. Request the required response measurements when planning a shared transmitter site.
The aluminium body contains silver-plated copper internal lines and PTFE insulators. Published dimensions are 120 × 60 × 20 cm, with a product weight of 25 kg. Confirm dimensional orientation, mechanical support, connector access and feeder routing before installation. Neither the published dimensions nor the product weight should be treated as verified shipping-package specifications.
