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| 10 april 2003 specification for crystal filter: q f 4 5 . 0 - 2 0 0 0 0 / 0 4 1. general 1.1. package : 1.2. type name: qf 45.0 - 20000/04 1.3. num ber of poles: 4 1.4. operating temperature range: - 20c to +70c 1.5. storage temperature range: - 35c to +85c 2. electric values 2.1. nominal centre frequency fo: 45.0 mhz 2.2. pass band 2.2.1. bandwidth between 3 db - frequenc ies: ? fo ? 100 khz 2.2.2. ripple: ? 2.0 db at fo ? 75 khz 2.2.3. insertion loss: ? 3.5 db ( measured on smallest attenuation in pass band ) 2.3. stop band 2.3.1. fo - 180 khz ? 20 db 2.3.2. fo + 190 khz ? 20 db 2. 3.3. fo - 900 khz ? 70 db 2.4. terminating impedance ( input and output ): 50 ? // 0 pf 2.5. input power level: < 1 dbm 3 . marking : manufacturer , date code qf 45.0 - 20000/04 4. environment conditions: cor responding to vectron standard cf001 _____________________________________________________________________________________ edited by: date: _________ _____ _____ _____ ___ ___ n ame: __ ___ ___ _ ________________________
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