Description High power base station duplex filter for the 400 – 470 MHz range. The use of large ø250 mm cavities means a high Q, resulting in a small duplex spacing. The large dimensions also mean a high power rating. Unloaded Q of a single cavity is approx. 8000. High frequency stability on temperature and power. Mounted on 19” brackets. Specifications Electrical Model DPF 70/22-250 Frequency 406 – 470 MHz Max. Input Power 300 W @ 1.5 dB Insertion Loss 250 kHz @ 1.5 dB 500 kHz @ 1.2 dB 1.0 MHz @ 1.0 dB Tx Noise Suppression on Rx-Freq. / Rx Isolation on Tx-Freq. 250 kHz @ 50 dB 500 kHz @ 60 dB 1.0 MHz @ 70 dB Mechanical Connection(s) N(f) Dimensions 510 x 515 x 300 mm / 20.07 x 20.27 x 11.81 mm Weight Approx. 15 kg / 33.07 lb. Environmental Operating Temperature Range -30°C to 60°C Frequency Stability 1.5 ppm/° C (approx.) Diagram and Mounting TYPICAL RESPONSE CURVES FOR 500 kHz DUPLEX SPACING
