Power Splitter / Power Combiner

GPS124 - GPS/GNSS Antenna Signal Splitter

12-Way, SMA, DC Block All Ports w/ 200Ω Load

Power Divider Price Quote Request Online
1x12 GPS splitter, SMA-jack (female), 1-2 GHz

12-way GPS antenna signal splitter
12 ports block DC + 200Ω internal load

  • GPS L1 - L5, GLONASS, Galileo splitter
  • Low Insertion Loss (0.6 dB avg)
  • High Port to Port Isolation (30 dB avg)
  • Excellent VSWR (1.15 : 1 avg)
  • 15 VDC & 75 mA max on DC block port
  • Tri Alloy SMA Female (Jack) 50 Ohm
12 Way Power Divider RF Input Ratings
Into Matched
Load VSWR's
In-Phase 180°
1.2 : 1 20 Watts 20 Watts
2.0 : 1 20 Watts 20 Watts
VSWR = infinity (open or short) 10 Watts 2 Watts
12 Way Power Combiner RF Input Ratings
Input Signals In-Phase 180°
Coherent 12 X 1.67 Watts 12 X 0.17 Watts
Non-Coherent 12 X 0.33 Watts
12 Way GPS Antenna Signal Splitter Outline Drawing
Mechanical Specifications
Circuit Design ……… 
Wilkinson; 12 Ports DC block
w/ 200Ω internal load
Connectors ……………  SMA 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 ……………………  1283 Grams

GPS124 - SMA-Jack GPS Signal Splitter Specifications

Frequency Range (MHz) Insertion Loss above 10.79 dB Amplitude
Isolation Input
1000-2000 1.5 dB max 0.5 dB max 8° max 18 dB min 1.45 : 1 max 1.25 : 1 max

GPS124, 1-2 GHz (GPS) Signal Splitter Combiner Test Data

GPS Signal Splitter, 12 Way, SMA - Insertion Loss
Insertion Loss Test Sweep for Model GPS124 from INSTOCK Wireless.
GPS Signal Splitter, 12 Way, SMA - Isolation
Isolation Test Sweep for Model GPS124 from INSTOCK Wireless.
GPS Signal Splitter, 12 Way, SMA - VSWR
Input VSWR Test Sweep for Model GPS124 from INSTOCK Wireless. Output VSWR Test Sweep for Model GPS124 from INSTOCK Wireless.

Input Return Loss

Output Return Loss

GPS124 - Features & Benefits


GPS124 is a twelve way, passive, GPS signal splitter ideal for splitting a GPS signal twelve ways from a separately powered signal source. Furnished with SMA type female connectors all ports. A special feature of this unit is the 200 ohm internal load which provides a current drain for the GPS receivers. Some GPS receivers incorrectly sense an antenna fault when there is no current draw. The 200 ohm internal load provides a simulated antenna current drain which prevents receiver faulting. Max voltage rating at the DC blocked ports is 15 VDC; maximum current rating is 75 mA.


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 GPS performance in your band of interest may be even better. See 12 way GPS splitter test sweeps for details. DC block and 200 ohm internal load are specially designed to be RF transparent with negligable effect on performance.


Mechanical features include precision CNC, brass, 50 ohm SMA female coaxial connectors with tri alloy plating to ensure 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 SMA female (jack) connectors extend 0.44" (11.1 mm) from the housing. Operating temperature range is from -65°C to +85°C. Weight is 1283 grams. See 12 way GPS splitter outline drawing for more information.


Model GPS124 is a 12-way, passive, SMA, GNSS splitter covering all frequencies from 1000 to 2000 MHz with best-in-class performance for GPS L1, L2, L3, L4, L5, GLONASS, Galileo, BeiDou and IRNSS global navigation satellite positioning system applications, and is deployed worldwide.

Options / Additional Models

PD2112: Standard configuration 12-way power divider, power combiner with 50 ohm SMA coaxial connectors. All ports pass DC.

PD5312: DC block 12 ports. Typically used in combining applications to prevent passing DC to sum port or other inputs.

GPS Splitter: 12-way GPS antenna signal splitter covering L1, L2, GLONASS and Galileo GNSS global navigation satellite system positioning frequency bands.

GPS121: 12way Ntype GPS signal splitter, DC pass one port - providing a means to power an active GPS antenna - other ports DC blocked and furnished with 200 ohm internal loads to simulate antenna pre-amp current draw, preventing the GPS receiver from sensing antenna fault.

Sales engineers available for your price quotation from 8:00 AM to 8:00 PM Eastern Time