LDCBS1X4GPS Passive 1X4 Splitter Technical Product DataFeatures••••••Precise Amplitude Balanceo Less than 1 dB variation between ports.
Flat Group Delayo Less than 1ns variation between L1 and L2.
Low Insertion Losso -7.5dB loss is typical across all operating
frequencies.
Wide Accepted Frequency Rangeo Accepts signals from the entire L-Band,
covering all major GNSS constellations.
Efficiently Blocked Ports
o Uses 200Ω resistors to prevent antenna
alarm faults from connected devices.
Matched Phase Balanceo Less than 1° of variation between ports.

Description
This Loaded DC Blocked Splitter 1X4 (LDCBS1X4) is a passive one input, four output RF splitter thatsplits signals from 1.1 GHz to 1.7 GHz. This equipment is designed to split signals within the L-band
to provide multiple devices with the signal from a single antenna. In the standard configuration, the J1
port will pass DC voltage from a connected device and pass this power to the antenna or otherdevices upline from the splitter. The other ports (J2-J4 are DC blocked and loaded with 200Ω
resistors to simulate antenna current draw which prevents antenna alarm faults. Custom gain
configuration, DC configuration, and connector configuration are available upon request.
Use Cases• Splitting a roof antenna signal between 4 GPS/GLONASS/GNSS receivers.
• Splitting a WAAS antenna between WASS receiver, ADS-B, and 2 other devices.
• Splitting a roof antenna signal to 4 passive antennas to re-radiate from 4 antennas.
• Usable as a smaller part in larger signal distribution networks.

Rev AFor sales or technical support contact us at 1-800-463-3063 or salestech@gpsnetworking.com

1

LDCBS1X4

Electrical Specifications, TA=25°C
General Specification
Parameter
Frequency Range
Characteristic
Impedance

Notes

Min

Covers all major GNSS constellations.

1.1

Unused ports should be terminated with 50Ω loads.

TypMax

Units

1.7

GHz50

Ω

GPS L1 & L2 RF Specification
Parameter

Notes

Input SWR

Max

Units

Input Standing Wave Ratio: S11

2.0:1

-

Output SWR

Output Standing Wave Ratio: S22

1.5:1-Insertion Loss

The loss that occurs from the input port to any output port: S21-8.5dBGain Flatness

The difference in loss or gain between the L1 and L2 frequencies.

1.00

dB

The difference in gain or loss between each output port.

1.00

dB

The difference in phase variation between each output port.

1.00

deg

Amplitude Balance
Phase Balance
Isolation
Group Delay Flatness

The amount of attenuation between two output ports.

Min-6.5

Typ-7.5

L2:15
L1:22

The difference in signal delay between the L1 and L2 frequencies.

dB
1.00

ns

External Power Options (Networked Option)
Voltage Input
Style
110VAC
Transformer (ITA Type A Wall Mount)Source Voltage Options
220VAC ( Euro)Transformer (ITA Type C Wall Mount)
240VAC (United Kingdom)Transformer (ITA Type G Wall Mount)
Customer Supplied DC 9-32 VDC
2-pin Military DC Connector
DC Voltage Out
Max Current out For Corresponding Vout
3.3V
110mA
5V
130mA
Output Voltage Options(1)
9V
140mA
12V
180mA
15V
220mA
CustomCustomStandard DC Configuration without External Power Option
J1/Output 1 Pass DC, J2-J4/Output 2-4 Block DC, Input Port Pass DC
200Ω loads standard for all DC Blocked outputs
Standard DC Configuration with any External Power Option (AC/DC or Military DC)
All DC Blocked Outputs feature 200Ω load in standard configuration
User selected output DC voltage
RF Connector Options
Connector StyleCharge
Type N-female
No Charge
Type SMA-female
No Charge
Connector Options
Type TNC-female
No Charge
Type BNC-female
No Charge
OtherContact GPS Networking(1)With Network Option, any RF port (input or output) can be specified to Pass DC or Block DC
Rev A

For sales or technical support contact us at 1-800-463-3063 or salestech@gpsnetworking.com

2LDCBS1X4

Part Number Configuration

Rev A

For sales or technical support contact us at 1-800-463-3063 or salestech@gpsnetworking.com

3

LDCBS1X4Performance

Typical Frequency Response: Ant. To J1, J2, J3, J4 (Type N connectors)
Each LDCBS1X4 ships with a test sheet that verifies critical performance characteristics, such as
gain, input VSWR, and amplitude balance; a typical VNA test sheet is shown below.

Rev A

For sales or technical support contact us at 1-800-463-3063 or salestech@gpsnetworking.com

4MechanicalContact us at salestech@gpsnetworking.com for 3D models or CAD drawings.