DATASHEET
High Performance
L-Band Low Noise Amplifiers
General Information
Intended for either indoor or outdoor
environments, the Locus Microwave
L31 Series L-Band Low Noise Amplifier
(LNA) provides a combination of
superior performance, reliability and
cost effectiveness.
Features
•Outdoor packaging
•Integral Fault Alarm
176 Technology Dr., Suite 200, Boalsburg, PA 16827 USA • Tel: +1 814 466 6275 • Fax: +1 814 466 1104
www.locusmicrowave.com
11557 DS Rev www.codansatcom.com
L31 Series Low Noise Amplifiers
Range
Units
Notes
1.510-1.577 or 1.525-1.561
1.500-1.700*
30, 35, 40, 45 or 50 max.
35, 40, 45 or 50 max.
50 or 60 min.
+/-0.5 max.
+/-1.0 max.
+/-0.25 max
+10, 12, 18 or 20 min.
GHz
GHz
K
K
dB
dB
dB
dB
dBm
1.3 typ., 1.5 max.
1.5 typ., 2.0 max.
1.3 typ., 1.5 max.
1.5 typ., 2.0 max.
0 max.
0.1 max.
:1
:1
:1
:1
dBm
O
/dB
non-damaging
@-5 dBm output
0.01 max.
0.001 max.
0.1 max.
0.5 max.
ns/MHz
ns/MHz2
ns p-p
ns p-p
per 40 MHz
per 40 MHz
per 40 MHz
per 40 MHz
+12 to +24
220 nom.
VDC
mA
110/220 VAC available
contact closure
Form ‘A’
current sensing
Outline
LMI Dwg #11490
inches
Weight
.65
lbs.
Finish
paint
white
RF Input
N or SMA
Female
RF Output
N or SMA
Female
4 pin
MS-type
Electrical Specifications
Frequency
Noise Temperature
1.500-1.700 GHz*
Gain
Gain Flatness
1.500-1.700 GHz*
Gain Slope
P1dB
VSWR
Input
1.500-1.700 GHz*
Output
1.500-1.700 GHz*
Overdrive
AM/PM Conversion
Group Delay
Linear
Parabolic
Ripple
1.500-1.700 GHz*
Power Requirement
Input Voltage
Current
Fault Alarm
@+23OC
@+23OC
per full band
per full band
per 10 MHz
Mechanical Specifications
Connectors
Power/Alarm
mate included
Environmental
Operating Temperature
Humidity
-40 to +60
100
O
C
%
Specifications are subject to change at the discretion of Locus Microwave, Inc.
www.locusmicrowave.com
www.codansatcom.com
with condensation
06/11
11557 DS Rev -
D
C
B
A
Outline Drawing
4
4
2.000
RF INPUT
SMA FEMALE SHOWN
N FEMALE AVAILABLE
.500
.250
3
PRODUCT LABEL
LOCATION
.500
3
Locus Microwave, Inc.
4.500
3.500
---
ZONE
-
REV
2
CHANGE NO
INITIAL RELEASE
REVISION HISTORY
DECIMALS
.XX ± .01
.XXX ± .005
THIRD ANGLE PROJECTION
± 0°-30'
ANGLES
FRACTIONS
± 1/64"
UNLESS OTHERWISE
SPECIFIED
DIMENSIONS ARE IN INCHES
TOLERANCES
DESCRIPTION
Pin A: +Vdc
Pin B: Gnd
Pin C: Common
Pin D: Closed on Fault
DC POWER/ALARM
MS3112E8-4P
RF OUTPUT
SMA FEMALE SHOWN
N FEMALE AVAILABLE
1.000
2-56 UNC-2B x .188" DEEP
4 PLACES
THIS SIDE ONLY
2
SES
APPR BY
11/02/25
DATE
1
SES
DWN BY
CODE IDENT
11490
DWG NO.
-
PAGE 1 OF 1
OUTLINE, L-BAND LNA
34TH3
REV
LOCUS MICROWAVE INC.
B
SIZE
SCALE 1 : 1 PROJ :
1
D
C
B
A
L31 Series Low Noise Amplifiers
Model Number Configuration
1 2 34
5
6 7
L31xxxx-xxx-xx
1 Frequency
0 = 1.510-1.577
GHz
2 Gain
5 = 50 dB
6 = 60 dB
1 =1.525-1.561 GHz
2 = 1.500-1.700
x GHz
*1
3
P 1dB
1 = 10 dBm
4
2 = 12 dBm
Power
D = 12-24 VDC
5
A = 110/220 VAC
Noise Temperature
030 K
035 K
4 = 18 dBm
040 K
5 = 20 dBm
045 K
050 K
6 Input Type
7 Output Type
S = SMA (Female)
N = N (Female)
S = SMA
xxxx(Female)*2
N = N (Female)
A Accessories
B Finish
Federal Standard
0 = None
0 = White
37925
1 = 4 Pin Mate
DC Only
1 = Dark Green
34094
2 = Desert Tan
33446
3 = Beige
37722
4 = Sand
33303
5 = Forest Green
34083
2= 4 Pin Pigtail
DC Only
3= 6 Pin Mate
AC Only
4= 6 Pin Pigtail
AC Only
6 = Metalast
*1 NOTE: 35K NOISE TEMP MINIMUM
*2 NOTE: LNAs ordered as components of a Redundancy system
xx
require an SMA (F) output connector.
Example: 1.525-1.561 GHz, 50 dB Gain, +10 dBm P1dB , DC Power, 45K Noise
L 3 1 1 5 1 D - 045 - N N
Frequency
Noise Temperature
Gain
Output Type
Input Type
Power
P1dB
Note: Selections shaded in gray will require Engineering review.
Please confirm configurations against product specifications, and with factory, prior to order.
www.locusmicrowave.com
www.codansatcom.com
11557 DS Rev -