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DDF9007

DDF9007

Dual Duplex Filter GSM-R 900MHz

Dual Duplex GSM-R filters are two port units with the ability to simultaneously pass both uplink and downlink GSM-R signals

FEATURES

  • Designed for GSM-R cab radio use
  • Low insertion loss (0.5dB typical)
  • Provides 40 dB of rejection to adjacent EGSM900 uplink and downlink
  • Comply to EN 45545-2 Fire Protection on Railway Vehicles
  • CE/RoHS/ETSI compliant
  • IP54 outdoor applications
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technical specifications
Band NameDOWNLINK (TX)UPLINK (RX)
rf performance
Passband918 - 925 MHz873 - 880 MHz
Bandwidth7MHz
Insertion loss2.0 dB maximum at band-edge, 0.5 dB typical at mid-band
Return loss20 dB minimum all ports
918 - 924.8 MHz- 15 dB minimum all ports at -40° C
924.8 - 925 MHz- 10 dB minimum all ports at -40° C		20 dB minimum all ports
15 dB minimum all ports at -40° C
Maximum input power20 W20 W
rejection characteristic (port a to port b)
DC - 872 MHz40 dB minimum
882 - 917 MHz40 dB minimum
925.5 - 926.2 MHz30 dB minimum
926.2 - 930 MHz40 dB minimum
930 - 2700 MHz50 dB minimum
electrical
Impedance50 Ω
Intermodulation products< -150 dBc (in uplink band, 2x20 W carriers)
environmental
For further details of environmental compliance, please contact Kaelus.
Temperature rangeStorage temperature: -40º C to +55º C
Operating temperature: -25º C to +70º C, EN 50155 OT3
Increased operating temperature at switch on: ST0
Ingress protectionIP54
Altitude1,400 m, EN 50125-1, Class A1
MTBF>1,000,000 hours
ComplianceEN 50155 shock and vibration: Category 1, Class B - any orientation
EN 45545-2 Fire Protection on Railway Vehicles
ETSI 300 019-1-1 Class 1.2 Storage
ETSI 300 019-1-2 Class 2.3 Transport
RoHS
Operational humidity95%
mechanical
Dimensions H x D x W295 x 350 x 150 mm (excluding brackets)
Weight15.0 kg
ConnectorsN type (F) X 2
MountingCustomer specific, includes grounding post
ordering information
Part NumberDescription
DDF9007F1V1-1Dual Duplexed Filter, GSM-R
electrical block diagram
ELECTRICAL BLOCK DIAGRAM
mechanical block diagram
MECHANICAL BLOCK DIAGRAM

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