ALDCBS1X2
GPS Amplified 1X2 Splitter Technical Product DataFeatures••••••

Excellent Gain Flatness
o Less than 1 dB variation between ports.
Flat Group Delayo Less than 1ns variation between L1 and L2.
High Output Gaino 22 dB gain 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 Amplified Loaded DC Blocked Splitter 1X2 (ALDCBS1X2) is an active one input, two output
splitter that splits signals from 1.1 GHz to 1.7 GHz. This equipment is designed to amplify and split
signals within the L-band to provide two 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 theantenna or other devices upline from the splitter via the antenna port. The other port (J2) is DC
blocked and loaded with 200Ω resistors to simulate antenna current draw which prevents antenna
alarm faults. Custom gain, DC power, and connector configurations are available upon request.
Use Cases• Splitting and amplifying a roof antenna signal between 2 GPS/GLONASS/GNSS receivers.
• Splitting and amplifying WAAS antenna between WASS receiver and ADS-B.
• Splitting and amplifying an antenna signal to 2 passive antennas to re-radiate 2 spaces.
• Usable as a small part of a larger signal distribution network.

Rev A

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

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ALDCBS1X2

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

Notes
Covers all major GNSS constellations.

Characteristic
Impedance

Unused ports should be terminated with 50Ω loads.

Req. DC Input V.
Input P1dB
Current Draw(1)Operating Voltage Range.
The 1dB compression point.
Typical current consumption.

3.3

Parameter

Notes

Min

Gain

The relative increase in signal power provided by the amplifier.

21

GPS L1 & L2 RF Specification

Min
1.1

TypMax1.7UnitGHz50Ω
1523

VDCdBmmATypMax

Unit

2223.5dB--24

Input SWR

Input Standing Wave Ratio: S112.0:1

Output SWR

Output Standing Wave Ratio: S22

1.8:1-L1 Noise Figure

The increase in noise power relative to an ideal amplifier.

2.5

3.25

dB

Gain Flatness

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

0.5

1dB

Amplitude Balance

The difference in gain or loss between each output port.

1.0dB

Phase Balance

The difference in phase variation between each output port.

1.0degIsolation

The amount of attenuation between two output ports.

Group delayflatness
Input P1dB

L2:15
L1:22dB

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

1The 1dB compression point.

Current Draw

-24

Typical current consumption.

Source Voltage Options

External Power Options (Networked Option)
Voltage Input
110VAC
220VAC240VAC (United Kingdom)
Customer Supplied DC 9-32 VDC

nsdBm

23mA

Style
Transformer (ITA Type A Wall Mount)
Transformer (ITA Type C Wall Mount)
Transformer (ITA Type G Wall Mount)
Mil DC Connector (Includes Mate)DC Voltage Out
Max Current out For Corresponding Vout
3.3 V
110mA
5V
130mA
9V
140mA
Output Voltage Options (1)
12V
180mA
15V
220mA
CustomCustom
Standard DC Configuration without External Power Option
J1/Output 1 Pass DC, J2/Output 2 Block DC, Input Pass DC
Standard DC Configuration with any External Power Option (AC/DC or Military DC)
All Outputs DC Blocked with 200Ω load standard
Any port can be custom selected to Pass or Block DC

Connector Options

Connector Style
Type N-female

ChargeNo Charge

Type SMA-female

No Charge

Type TNC-female

No Charge

Type BNC-female

No ChargeOtherContact 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

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ALDCBS1X2

Part Number Configuration

Rev A

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

3

ALDCBS1X2
Performance

ALDCBS1X2 (Standard Gain, typical)
Each ALDCBS1X2 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.