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LHA Low Profile Antenna 380-470 MHz
- Compact Robust Protected antennas for Limited Height & High Vehicle Situations
- Omni directional
- Wide Bandwidth
- Unity Gain
- High Impact ABS Cover
- Suitable for High Pressure Vehicle Washing
- Digital PMR Applications
Type LHA low profile vehicle antenna is designed for use on vehicles operating under severe height limitations such as buses, trains, trams, trucks etc. Radiation is omnidirectional and the antenna is vertically polarised. The base plate is fitted with a high stability trimmer capacitor to facilitate VSWR adjustment. The radiating element is
enclosed in a tough ABS moulding with an aluminium base plate. Type LHA is supplied as a fully assembled sealed unit ready for fitting directly to the mounting surface. Type LHA is also suitable for use as a ceiling mounted antenna in large buildings, shopping complexes or railway stations.
ELECtrICAL SPECIFICATIONS
Frequency Range: 380-470 MHz
Bandwidth 2.5% @ centre frequency
Gain (Rel. ¼ wave antenna): Unity at resonant frequency
VSWR: 1.5:1 Typically
Polarisation Vertical
E-Plane Beamwidth (-3dB) As for 1/4 wave antenna
H-Plane Beamwidth (-3dB) Circular within +/- 0.5dB (using ground plane 1/2 square)
Power Rating: 100 Watts
Impedance: 50 ohms
Lightning Protection: DC ground
Feeder Tail: 1m URM76 (other lengths available)
MECHANICAL SPECIFICATIONS
Termination: BNC Plug (Other Terminations Available:)
Dimensions (dia x H mm) 178dia x 35mm dia
Weight: 0.4 kg
Baseplate Fixing: Screw or Rivet
MATERIALS
Cover Black ABS, UV Stabilised
Baseplate Aluminium (14swg)
STANDARD MODELS
Frequency ** Model
380-430 MHz LHA400 Fitted with single trimmer
420-470 MHz LHA450 Fitter with single trimmer
** For other frequencies contact us
Optimum performance is achieved when the antennas is fitted to a metallic ground plane or roof 1/2 square |
