Model LPM-28E
VHF/UHF Dual Polarized LP Antenna 20-1000 MHz 7 dBi Manual

Dual polarized antenna with manual rotator. MIL nomenclature AS-3655/G.

Frequency Range: 20-1000 MHz
Gain: 7 dBi
VSWR: 2.5:1 Max
Polarization: Horizontal & Vertical
Size: 35′ L x 25′ W x 25′ H
NSN: 5985-01-208-5450
Military Nomenclature: AS-3655/G
Model Number: LPM-28E
Part Number(s): 1500-0239-202

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The VHF dual polarized log periodic antenna, normally used in surveillance activities, has two independent (one horizontal, one vertical polarized) outputs and is designed for RF reception in extremely hostile environments.


The antennas are heavy duty and built to withstand high winds with icing conditions. All materials have good corrosion resistant qualities.


Available in a mast-mounted version with either a powered or manual pedestal, or in a back-mounted configuration for single-directional coverage.

Equipment Supplied:

Dual polarized LP array, fiberglass mast, feed harness, and manual pedestal.

Optional Equipment:

TS-1A (70 foot tower)
TS-9A (20 foot tower)
Manual positioner
Electric positioner

Spec Sheet


Gain 10 dBi
Power Capability, /2 Version 10 kW avg/20 kW PEP
Height 100 Feet
Wind Loading 120 MPH
Back Lobes 14 dB Minimum
Side Lobes 14 dB Minimum
Frequency Range 2.5-30 MHz
VSWR 2:1 Maximum
Shipping Volume 600
Width 542 Feet
Curtain Length 165 Feet
Power Capability, /3 Version 25 kW avg/50 kW PEP
Length 410 Feet
Gain (Imperfect Ground) 5 dB over 1/4 Wavelength Monopole
Input Impedance 50 Ohms Unbalanced
Shipping Weight 15,000
Power Capability, /1 Version Receiving to 1 kW avg/2 kW PEP