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| Crystal filter QF21.4-0020/06 Application * 6 pol filter * i.f.- filter * use in mobile and stationary transceivers Limiting values Nominal frequency Centre frequency Insertion loss Pass band at 6.0dB Ripple in pass band Stop band attenuation Alternate attenuation Group delay distortion fo fc Unit MHz MHz dB kHz dB dB dB s Value 21.4 21.4 250Hz < 24.0 0.1...0.25 Gaussian > 40 > 60 < 300 fc 0.1 kHz fc 0.5 kHz fc 0.1 kHz Terminating impedance Z R1||C1 R2||C2 Ohm/pF Ohm/pF 50 || 0 50 || 0 Operating temp. range Storage temp. range Environment conditions Characteristics Pass band QF21.4-0020/06 Stop band C C -20... +70 -45... +85 according to CF001 Pin connections: 1 2 3 4 Input Ground-Input Output Ground-Output 02.04.04 TELE FILTER Zweigniederlassung der DOVER Germany GMBH Potsdamer Str. 18 D- 14513 Teltow ! (+49)03328-4784-10 ; Fax (+49)03328-4784-30 http:\\www.vectron.com |
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