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FTDPDC3-BD

FTDPDC3-BD

Combiner 2 channels, double balanced bridge.

  • 2 CHANNELS COMBINER 
  • DOUBLE BALANCED BRIDGE 
  • FM BAND 87.5÷108 MHz • BAND II 







The Double Balanced Bridge System consists of two Band-Pass Filters, two -3dB Couplers and an Absorber. One of the two inputs has a narrow-band characteristic (complying with the band-pass functions of the band-pass filters), while the remaining input shows a broadband characteristic within the operating frequency range of -3dB couplers. Both inputs exhibit a frequency independent load impedance to the RF source.





TYPICAL SPECIFICATIONS 
ModelFTDPDC3-BD – Double Bridge Type
Impedance50 Ohm
Frequency Range87.5-108 MHz
VSWR ±150 KHz1.1:1 max
Insertion Lossat 0f 0.25 dB Max (Narrow Band Input) 0.1 dB Max (Broad Band Input)
Return Loss ±150Khz≤ -26 dB
Isolation ± 2 MHzN/B Æ B/B ≥ 32 dB B/B Æ N/B ≥ 40 dB
No. of Input3 (2 Narrow Band + 1 Broad Band)
No. of Output1
Connectors1+5/8” Narrow Band Input 1+5/8” Broad Band Input 3+1/8” Output (Opt. 1+5/8”)
Max Power5 KW on Narrow Band 15 KW on Broad Band
Working Temperature-20°C ÷ +50°C
ColourEnamel gray ral 7001
MaterialsAluminium, Brass, Copper, PTFE, Stainless Steel, Silvering (min 12µm thickness)



FEATURES 

  • Distortion – Free Transmission 
  • Frequency Independent Input Impedance 
  • Frequency at the broadband input can be varied without retuning the band-pass cavity filters.
  • Broadband input can be used as spare input for expansion without requiring modification of existing band-pass cavity filters. 
  • If only narrow band input is being used, an extremely high coupling attenuation (directional coupler attenuation plus filter attenuation) can be achieved for very small frequency spacings. 
  • Low Loss, High Isolation 
  • Natural Convection 





Dimensions1300(Max size)×960×660 mm (51.2(Max size)×37.8×26.0 inch) (H×L×W)
Net Weight≅130 Kg






ORDERING INFORMATION

  • FTDPDC3-BD
    Combiner 2 channels, double balanced bridge.




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