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+1 (201) 342-3338 phone  
+1 (201)-342-3339 fax  
89 Leuning Street  
South Hackensack, NJ 07606  
Technical Support  
+1 (201) 342-3338 phone  
+1 (201)-342-3339 fax  
89 Leuning Street  
South Hackensack, NJ 07606  
      Bias-T for Cellular & PCS Networks  BT-0819-xxxx
  BT 1819 NT FV  
  • Multiple Input & Output Connector Types
  • Cellular, PCS band capability
  • Lightning Protected
  • High RF Power Handling
  • Housing Rated to IP60
  • Connector Rated to IP68






Communication Components, Inc. (CCI) Bias-T’s are designed to combine the DC Bias provided by a Power Distribution Unit for TMA’s (PDU) or other DC Voltage source and the RF signal from other equipment onto the center conductor of a feeder line. This combination of RF and DC provides power to TMA’s (in this case either in the Cellular, or PCS bands), which can then amplify the uplink signal from mobile users. The Bias-T also provides surge protection in case of lightning strikes or other sources or surges. All of the Bias-T’s listed herein utilize 7/16 DIN connectors for the RF Input to the Bias-T and the combined RF + DC Output from the Bias-T. See the mechanical specifications listed on page 2 for details of Model Number versus Input and Output connector type.


Technical Description:

The Bias-T’s consist of 7/16 DIN Male and/or Female Input (RF) & Output (RF + DC) connectors, and a “NanoC” connector as the DC Bias Input point. The unit also provides protection against lightning strikes via a surge protection circuit. They are all housed in an IP60 rated enclosure with IP68 rated connectors suited to long-life indoor & outdoor (covered) mounting.

An optional Power Distribution Unit (PDU) Model # PDU-1819-3DT is available to power up to six TMA’s, and provides monitoring and alarm functions. The PDU is a single (1U) 1.75” x 19” rack mount unit and contains dual redundant power supplies that provide a regulated DC supply voltage for the TMA’s. The Power Distribution Unit monitors the health of the TMA’s and is preprogrammed with the window of acceptable operating currents of all CCI TMA’s. LED’s and dry relay contacts indicate the operational status of each active channel. Output channels are powered if a compatible TMA is connected at the time the front panel reset button is pressed or when the unit is turned on.

Electrical Specification

Outdoor AISG Compliant Bias-T(BT-0819-xxxx) Typical Specifications
BT-1819-NT BT-0819-DMDF BT-0819-DFDF BT-0819-DFDM
1000 - 2000 MHZ 800 - 2000 MHZ 800 - 2000 MHZ 800 - 2000 MHZ
RF Impedance 50 ohms
Insertion Loss 0.2 dB
Return Loss 20 dB min. Input and Output
RF Power Handling 300 W
IMD <-120 dBm typical (2 × +43 dBm tones)
Surge Protection 8/20us, ±2KA max., 10 strikes each( per IEC-801-5)
Voltage Rating + 40 VDC
Current Rating 3A max.

Environmental Specification

Operating Temperature -40˚C to +70˚C
Ingress Protection IP60 (Housing), IP68 (Connectors)
MTBF >300,000 hours

Mechanical Specification

Model BT-1819-NT BT-0819-DMDF BT-0819-DFDF BT-0819-DFDM
Connectors RF: 7/16 DIN-Male  RF: 7/16 DIN-Male RF: 7/16 DIN-Female RF: 7/16 DIN-Female
RF+DC 7/16 DIN-Female RF+DC 7/16 DIN-Female RF+DC 7/16 DIN-Female RF+DC 7/16 DIN-Male
DC: "NanoC" external thread male
Dimensions (body only)(W×H×L) 1.9 × 2.2 × 2.1 in. (48.3 × 55.9 × 53.3 mm)
Dimensions (inc. connectors)(W×H×L) 1.9 × 2.2 × 4.2 in. (48.3 × 55.9 × 106.7 mm)


  BT 1819 NT Outline
  Bias-T Outline Drawing (BT-1819-NT)

Block Diagram

  BT 1819 NT BD
  Bias-T Block Diagram (BT-1819-NT)



Product Information


Parts & Accessories

BT-1819-NT DIN-Male RF Port, DIN-Female RF+DC Port
BT-0819-DMDF DIN-Male RF Port, DIN-Female RF+DC Port
BT-0819-DFDF DIN-Female RF Port, DIN-Female RF+DC Port
BT-0819-DFDM DIN-Female RF Port, DIN-Male RF+DC Port


 Federal Communication Commission (FCC) Part 15 Class B, CE, CSA US


89 Leuning Street

South Hackensack, NJ 07606

+1 (201) 342-3338

+1 (201) 342-3339 fax