TECHNICAL PRODUCT DATA SHEET

L12F-HR
Low Noise Amplifier

DESCRIPTION
Designed with the thin link margins of satellite
navigation systems in mind, the L12F is a single input
L1 L2 Band Pass Filter that passes only the L1 and L2
GPS frequencies. The device features excellent sideband rejection with an insertion loss of less than 5.5dB.
The product may pass DC or can also be used as a DC
block.
The L12F Pass Filter comes with High Rejection
standard on the L1 Band and standard rejection on theL2 band.

FEATURES

L1 & L2 GNSS Bands
Excellent Out of Band Rejection
Passes DC for Active Antennas

OPTIONS
The L12F-HR can be custom configured. Pleasecontact GPS Source for further information on productoptions and specifications.

L12F-HR Passive Filter Data Sheet
059-FFL-AAA-AAX-AGZ-006
12/22/2016
www.gpssource.com

AS9100C:2009 and ISO 9001:2008 Compliant Company

1

L12F-HR Electrical Specifications
Table 1-1.

Electrical Specifications

Operating Temperature -40°C to 85°C
Parameter

Conditions

Frequency Range

IN – OUT, IN/OUT 50

In/Out Impedance

IN, OUT

Insertion Loss

IN – OUT, IN/OUT 50

MinMax1227.6MHz

1.201.251575.4MHz

1.56

1.59

1227MHz44.351575MHz

55.5

6IN – OUT, IN/OUT 50
1575MHz± 75MHz-16± 100MHz-20± 75MHz-35± 100MHz-35UnitsGHz50

1227MHz
Rejection

TypdBdB

Input SWR

OUT Port 50

2:1—Output SWR

IN Port 50

2:1—

Pass DCDC IN
Ant/Thru
Current

Non-Powered Configuration, DC Input on OUT port

316

PoweredPowered, Military Connection or Quick Connect Option

(1)

28(2)

Pass DC

Non-Powered Configuration, DC Input on OUT port

250

Max RF Input Without Damage

30

Max RF Input
Notes:1.
2.

3

DC IN for powered option must be 2V greater than desired DC Voltage Out.
Maximum DC IN is 35V when 1275B powered option is included.006

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L12F-HR Passive Filter Data Sheet
059-FFL-AAA-AAX-AGZ-006
12/22/2016

VDCmAdBm

2

Performance Data

2.1

L12F-HR
Figure 2-1.

Gain vs. Frequency

Gain vs Frequency
0(L2) -4.34 dB(L1) -5.58 dB-5-10

Gain (dB)-15-20-25-30-35-40
100 0110 0120 0130 0140 0150 0160 0

170 0

180 0190 0200 0170 0

180 0190 0

200 0Frequency (MHz)Figure 2-2.

SWR vs. Frequency

SWR vs. Frequency
1098SWR7654321100 0(L1) 1.33 SWR(L2) 1.4 SWR
110 0120 0

130 0

140 0

150 0

160 0

Frequency (MHz)Page 3 of 7
L12F-HR Passive Filter Data Sheet
059-FFL-AAA-AAX-AGZ-006
12/22/2016

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3

Product Options
Table 3-1.

L12F-HR Available Options

Power Supply
Voltage Input

Type110VAC

Wall Mount Transformer

220VAC

Wall Mount Transformer

240VAC (U.K.)

Wall Mount Transformer

DC 5VDC to 28VDC

Military Style Connector or Tinned Leads

Source Voltage

DC Voltage Out(2)
3.3
5.0
7.5

Output Voltage (1)

9.0
12.0
Variable (3V to 12V)
CustomRF Connector
Connector TypeConnector

Limitations

N(Female/Male)

N/A

SMA

(Female/Male)

N/A

TNC

Female/Male)

N/A

Housing
Housing
Port

Limitations

Standard

None

(1)

Configuration
Notes:

Housing Type1.
2.

Pass DC(1)(1)

DC Blocked

IN Port Passes DC
IN Port Blocks DC

Powered Option: any or all RF ports (input or output) can be DC Blocked or can pass the powered DC voltage.
Maximum combined DC current draw out all ports of the device is a function of the DC input voltage and desired
DC output voltage according to the following:
lout  1.4 / (VDC IN – VDC OUT) – 0.007 Amps (or 250mA max)
For powered option with a wall mount transformer (Voltage Input = 110/220/240VAC), VDC IN is 9V.

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L12F-HR Passive Filter Data Sheet
059-FFL-AAA-AAX-AGZ-006
12/22/2016

4Product Code Decoder
L 1 2 F - H R - X - P 11 0 / 5 - S FFilter
L12F-HR = L1L2 Passive Filter
L1-Band High Rejection
L2 Band Standard Rejection

Connector Option
NFSFTFNMSMTM======N ....................Female
SMA ................Female
TNC ...............Female
N .....................Male
SMA ................Male
TNC ................Male

Environmental Option(s)X = Any or all of the following
E = EMI Shielding
W = Waterproof
HS = Hermetically Sealed
Leave Blank if None

Output Voltage
3.3
5
7.5
912XXV=======

3.3V
5.0V
7.5V
9.0V
12.0V
Custom Output Voltage
Variable

Source Voltage
P110
P220P240
PDCPMPMS======Transformer
TransformerTransformer
DC with Quick Connects
Military Connector (User Supplies DC)
Military Connector (User Supplies DC)

Page 5 of 7
L12F-HR Passive Filter Data Sheet
059-FFL-AAA-AAX-AGZ-006
12/22/2016

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5Mechanical Drawing

GPS Source Part No.

FinishFFL-AAA-AAX-AGZ
Description

L12F-HR Filter

Size

N/A

MassC

Tolerances
LinearAngularrd

Material

3 Angle Projection

N/A

All materials and finishes shall comply with European Union RoHS and are lead free. Dimensions are in inches unless otherwise specified.

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L12F-HR Passive Filter Data Sheet
059-FFL-AAA-AAX-AGZ-006
12/22/2016

L12F-HR Passive Filter Data Sheet
059-FFL-AAA-AAX-AGZ-006
Page 7 of 7, 12/22/2016

64 N. Mission Drive
Pueblo West, CO 81007
Phone: (+1)(719) 561.9520
Fax: (+1)(719) 565.0890
techsales@gpssource.com
www.gpssource.com
AS9100C:2009 and ISO 9001:2008 Compliant Company

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