ALDCBS1X8GPS Amplified 1X8 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 14 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 200 resistors to prevent antenna
alarm faults from connected devices.
Matched Phase Balanceo Less than 14 of variation between ports.

Description
This Amplified Loaded DC Blocked Splitter 1X8 (ALDCBS1X8) is an active one input, eight output
RF splitter that splits signals from 1.1 GHz to 1.7 GHz. This equipment is designed to amplify andsplit signals within the L-band to provide multiple devices with the signal from a single antenna. In thestandard configuration, the J1 port will pass DC voltage from a connected device and pass this power
to the antenna or other devices upline from the splitter via the antenna port. The other ports (J2-J8)
are DC blocked and loaded with 200 resistors to simulate antenna current draw which prevents
antenna alarm faults. Custom gain, DC, and connector configurations available on request.
Use Cases• Splitting and amplifying a roof antenna signal between 8 GPS/GLONASS/GNSS receivers.
• Splitting and amplifying WAAS antenna between WAAS receiver, ADS-B, and 6 other devices.
• Splitting and amplifying an antenna signal to 8 passive antennas to re-radiate a large facility.
• Usable as a 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

1ALDCBS1X8
Electrical Specifications, TA=25C
General Specification
Parameter

Notes

Min

Frequency Range

Covers all major GNSS constellations.

1.1

Characteristic
Impedance

Unused ports should be terminated with 50Ω loads.

Req. DC Input V.

Operating voltage range for non-networked units.

Current Draw

Typical current consumption.

TypMax

Unit

1.7

GHz
Ω

50
3.3

15

VDC

17mA

Max

Unit

GPS L1 & L2 RF Specification
Parameter

NotesMin

Typ13.0

14.0

Gain

The relative increase in signal power provided by the amplifier.

Input SWR

Input Standing Wave Ratio: S11

Output SWR

Output Standing Wave Ratio: S22

Noise Figure

The increase in noise power relative to an ideal amplifier.

L1:2.25
L2:4.75
0.5

Gain Flatness

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

Amplitude Balance

The difference in gain or loss between each output port.

Phase Balance

The difference in phase variation between each output port.

15.0

dB

2.0:1

-2.0:1

dB

1.0

dB

1.0dB

14deg

L1:16
L2:12

Isolation

The amount of attenuation between two output ports.

dB

Group delayflatness

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

.25

Input P1dB

The 1dB compression point.

-23

1nsdBm(1): Performance is slightly reduced around GPS L5. If working on sensitive L5 applications, please request performance data.
External Power Options (Networked Option)
Source Voltage Options
Voltage Input
Style
110VAC
Transformer (ITA Type A Wall Mount)
220VAC
Transformer (ITA Type C Wall Mount)
240VAC (United Kingdom)Transformer (ITA Type G Wall Mount)
Customer Supplied DC 9-32 VDC
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
220mACustom
CustomStandard DC Configuration without External Power Option
J1/Output 1 Pass DC, J2-J8/Output 2-8 Block DC, Antenna 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 DCConnector Options

Connector Style
Type N-female

ChargeNo ChargeType SMA-female

No Charge

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

ALDCBS1X8
Part Number Configuration

Rev A

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

3

ALDCBS1X8Performance
ALDCBS1X8 (Standard Gain, typical)
Each ALDCBS1X8 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 AFor 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.