Power Splitter / Power Combiner

PD5912 - DC Blocking L-Band Splitter Combiner

12-Way, DC Block 11 Ports, TNC, 698-2700 MHz

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12 Way, TNC Female, DC Blocking Power Divider Combiner
  • Wideband Frequency (698 - 2700 MHz)
  • Low Insertion Loss (0.8 dB avg)
  • High Port to Port Isolation (30 dB avg)
  • Excellent VSWR (1.15 : 1 avg)
  • 50 VDC maximum on DC block ports
  • Tri Alloy TNC Female (Jack) 50 Ohm
12 Way Power Divider RF Input Ratings
Into Matched
Load VSWR's
In-Phase 180°
1.2 : 1 40 Watts 40 Watts
2.0 : 1 40 Watts 40 Watts
VSWR = infinity (open or short) 20 Watts 4 Watts
12 Way Power Combiner RF Input Ratings
Input Signals In-Phase 180°
Coherent 12 X 3.33 Watts 12 X 0.33 Watts
Non-Coherent 12 X 0.66 Watts
12-Way TNC-Jack Power Splitter Combiner Outline Drawing

DC Blocking L-Band Splitter
TNC-Jack Female, 698-2700 MHz

Mechanical Specifications
Circuit Design ……… 
Wilkinson Microstrip passes
DC Current thru all ports
Connectors ……………  TNC Female, 50 Ohm Coaxial
Body ……………………  Brass, Tri-Alloy Plate
Connector Pin …  Beryllium Copper, Gold Plate
Insulator ……………  PTFE, Virgin Electrical Grade
Housing …………………  Aluminum, Clear Chem Film
Operating Temp …  -65°C to +85°C
Weight ……………………  1463 Grams

PD5912 - TNC Power Divider Combiner Specifications

Frequency Range (MHz) Insertion Loss above 10.79 dB Amplitude
Isolation Input
698-2700 1.5 dB max 0.5 dB max 8° max 18 dB min 1.45 : 1 max 1.25 : 1 max

PD5912, 698 - 2700 MHz TNC Splitter Combiner Test Data

DC Blocking Power Divider, 12 Way, TNC Jack - Insertion Loss
Insertion Loss Test Sweep for Model PD5912 from INSTOCK Wireless.
DC Blocking Power Divider, 12 Way, TNC Jack - Isolation
Isolation Test Sweep for Model PD5912 from INSTOCK Wireless.
DC Blocking Power Divider, 12 Way, TNC Jack - VSWR
Input VSWR Test Sweep for Model PD5912 from INSTOCK Wireless. Output VSWR Test Sweep for Model PD5912 from INSTOCK Wireless.

Input Return Loss

Output Return Loss

PD5912 - Features & Benefits


PD5912 is a RoHS compliant, 12 way, wideband, 50 ohm, RF power divider, power combiner furnished with TNC jack female coaxial connectors. The passive Wilkinson design passes RF, 10 MHz and DC current through one port, typically for powering an active antenna, with the other ports blocking DC. Max voltage rating at the DC blocked ports is 50 VDC. All wireless band applications in the frequency range from 698 to 2700 MHz are covered with best in class RF performance. Max microwave input power levels up to 40 watts can be handled in both power splitter and power combiner applications. See 12 way power divider input rating tables for additional details.


The heart of the unit is a precision designed and etched Wilkinson type microstrip circuit on a low loss, high frequency, dielectric substrate. Electrical performance is highlighted by 1.5 dB max insertion loss (above the 10.79 dB power split), 18 dB min isolation, 1.45:1 max input VSWR and 1.25:1 max output port VSWR. Equal power split and symmetry is displayed by 0.5 dB amplitude balance and 8 degrees phase balance. Narrow band RF performance over your frequency range may be even better. See 12 way power divider test sweeps for details.


Mechanical features include precision CNC, brass, 50 ohm TNC female coaxial connectors with tri alloy plating to insure tarnish resistance and low PIM operation. Connector pins are gold plated beryllium copper for reliability and low contact resistance. Virgin electrical grade PTFE support insulators captivate the contact pins enabling trouble free coaxial connector mating.

Long term operation and superior shielding is assured by the rugged CNC machined aluminum housing with clear chemical film finish. Secure mounting is provided by four 0.125" diameter (3.18 mm) through holes. RoHS construction includes no-lead solder and a finish free of hexavalent chromium.


Housing dimensions are 11.98" wide by 3.48" deep by 0.88" high (304.3 x 88.4 x 22.2 mm). The TNC female (jack) connectors extend 0.61" (15.5 mm) from the housing. Operating temperature range is from -65°C to +85°C. Weight is 1463 grams. See 12 way TNC splitter outline drawing for more information.


The PD5912 12-way, TNC-jack, 698-2700 MHz power splitter combiner is ideal for a wide range of wireless radio frequency microwave applications on both transmit and receive sides, ranging from amplifier sharing & receiver combining to antenna splitting, and is deployed world wide in UHF networks encompassing Land Mobile Radio System (LMRS), Terrestrial Trunked Radio (TETRA), and Radio Frequency Identification (RFID).

Options / Additional Models

Standard TNC : Passes DC current at all ports. 12 Way, TNC-jack, power divider combiner, 698-2700 MHz. PD2912

BNC Female : DC blocking L-band splitter furnished with BNC-jack (female) 50 ohm coaxial connectors PD5512

Type N Female : Furnished with N-jack (female) 50 ohm coaxial connectors PD2012

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