LHA Series CATV Distribution Amplifiers
Model Bandwidth Powering
LHA41RM-1GHz (42/54) 5-42 MHz / 54-1000 MHz 90-240VAC
LHA41RM-1GHz (65/85) 5-65 MHz / 85-1000 MHz 90-240VAC
LHA series CATV Distribution Amplifiers with active return are broadband indoor GaAs-PushPull, high output level
distribution amplifiers designed for RF distribution systems such as those in Cable Television Apartments, Hotels,
Hospitals and other applications where a high quality low noise figure amplifier is necessary to amplify the signals in
both the forward and return paths.
The LHA41RM fills out the selection of 1GHz Distribution Amplifiers giving you extra reach and higher output.
Designed with flat operational gain of 41 dB in the forward band and 18 dB in the reverse band. The LHA41RM has
sockets for JXP style plug-in controls, including input pad and equalizer and interstage equalizer for forward bandwidth
for balancing, and input pad plus output pad and equalizer for reverse path balancing.
The amplifiers are self powered and compatible with 117 and 230V systems
FEATURES
• GaAs-Fet Push Pull
for high output
levels with low
distortions
• Active reverse,
• JXP style plug-in
controls,
• RFI housing,
• Surge protection on
all ports,
• Diecast aluminum
housing for heat
dissipation,
• 117/ 230 Volt
powering.
Instruction Manual
LHA Series 1 GHz
SPECIFICATIONS(Typical)
Typical, for T = 20degC, Zin = Zout = 75 ohms
Parameter Notes Forward Reverse Units
Bandwidth 54/85-1000 5-42/65 MHz
Technology GaAs GaAs
Min Full Gain 41 18 dB
Flatness +/-1 +/-1 "
Return Loss, IN/OUT -16 -16 "
Test Points, IN/OUT
directional coupler
-20 -20 "
Gain Control
JXP plug-in
in in / out 0 to 20dB, 2dB steps
Slope Control
JXP plug-in
in / mid out
Forward : 3 to 13dB
Reverse: 2 to 10dB in 2dB
steps
Forward Distortions:
40/50dBmV (54/1000MHz) output level, 79 NTSC channels, digital at -6dB after 550MHz
CTB
on ch78
-70 dBc
CSO
on ch78
-72 "
Xmod
on ch2
-73 "
Forward Distortions:
36/46dBmV (54/1000MHz) output level, 79 NTSC channels, digital at -6dB after 550MHz
CTB
on ch78
-83 dBc
CSO
on ch78
-74 "
Xmod
on ch2
-80 "
Reverse Distortions:
52dBmV flat output, 4 ch
3rd on T10 -68 "
2nd on T9 -65 "
Xmod on T10 -64 "
Noise Figure
with 0dB jumpers
6 7 (*) dB
Group Delay
ch2
<40 nsec
41-42MHz
<35 "
5-6MHz
<40 "
Hum Modulation -80 dBc
RFI Isolation -100 "
Surge Withstand
IN / OUT IEEEC62.41 Cat.A3(6kV,200A)
Powering Mains, 90-240 Vac
Power Consumption 15 Watts
Temperature -10 to +55 degC
Enclosure
IP54 Category, Diecast Aluminium
Weight 2.8 (6.2) kg (lb)
Dimensions
21 x 17 x 9 (7-5/8 x 5-3/8 x 3)
cm(in)
LHA41RM_V1 July09
* Noise Figure at 5MHz is max.8dB
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