RAMI254EXT-LB3

The RAMI254EXT-LB3 is a replacement for the OE-254/GRC Antenna Group. It is comprised of fewer piece parts, allowing for quicker assembly and erection, along with being capable of VHF, UHF and L-Band operation modes. It can be deployed atop its 27 ft. mast (RAMI5008-FG) or utilized on the ground standing on its tripod base. It is manufactured to meet the mechanical and environmental specifications as called out in MIL-PRF-49204 (OE-254/GRC specification). The antenna comes complete with two 75 ft. of LMR-400 transmission lines with an in line adapter (antenna to diplexer) and two 5 ft. RG-223 transmission lines (diplexer to radio set). Additional components for full assembly and erection (mast or ground deployment) are included in the transit bag.

Product Specifications
ModelRAMI254EXT-LB3
Application Ground Based Communications
Frequency 30 – 88 MHz
225 – 450 MHz
1250 – 2000 MHz
Impedance50 Ohms Nominal
Gain30 – 88 MHz, > -7.0 dBmp
225 – 450 MHz, > +1.0 dBi
1250 – 2000 MHz, > +2.0 dBi Avg.
VSWR30 – 88 MHz: 3.5:1 Max
225 – 450 MHz: 3.0:1 Max
1250 – 2000 MHz: 2.5:1 Max
PolarizationVertical
PatternOmni-Directional
Isolation225-450 MHz/1250-2000 MHz: -9 dB
30-88 MHz/1250-2000 MHz: -20 dB
Connector“N” type female at antenna feed point
RF Power CapacityVHF, 75 Watts CW
UHF, 75 Watts CW
LBAND, 100 Watts CW
ColorP/N: RAMI254EXT-LB3G CARC Green/Black Mast
P/N: RAMI254EXT-LB3T CARC Tan/Black Mast
P/N: RAMI254EXT-LB3B CARC Black/Black Mast

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