RFS RADIO FREQUENCY SYSTEMS VLP SERIES

GENERAL DESCRIPTION

VERTICAL LOG PERIODIC DIPOLE ARRAYS - VLP SERIES

photo RFS Radio Frequency Systems VLP Series

This range of low angle directional antennas is available in three standard frequency bands.

The VLP series can be customised or tailored to suit lower frequency operation and specific customer requirements or applications.

Designed for medium to long distance operation, these vertically polarized antennas are used with a ground mat for improved low angle performance.

Characterised by a radiation pattern that is essentially consistent at all frequencies. The VLP series rugged design ensures its suitability for wind velocities up to 230 km/hr.

Electrically steerable arrays, comprising a number of antennas radiating from a common support mast can be supplied to suit customers specifications.

TECHNICAL SPECIFICATIONS
MODEL			VLP3.5	VLP4.5	VLP5.5
Electrical
Frequency Range		(MHz)	3.5 - 30	4.5 - 30	5.5 - 30
Polarization			Vertical
Input Impedance			300 ohm balanced or 50 ohm unbalanced
VSWR (Average Soil)			<2.0:1
Gain (typical)			3.5 to 8 MHz = 10 dBi 8 to 30 MHz = 14 dBi
Azimuth 3 dB Beam width		(deg)	120 typical
Front/Back ratio		(dB)	14 dB typical
Power Rating		(kW)	10 kW average, 20 kW PEP
Mechanical
Mast Height	rear	(m)	48	39	30
	front	(m)	10	10	10
Ground area	rear (width)	(m)	35
	front (width)	(m)	12
	length	(m)	98	87	68
Earth Mat Area		(m)	80 x 50	70 x 45	60 x 40
Wind Rating		(km/hr)	230
Specifications may change without notice

AZIMUTH RADIATION PATTERNS

ELEVATION RADIATION PATTERNS

ANTENNA PICTURE

picture RFS Radio Frequency Systems VLP Series