Aerial UHF 450 – 520 Mhz 4dB

Description

Note: This aerial uses a through bolt mount. The aerial can be mounted by using a bracket with
a 16mm diameter hole, or by making a 16mm diameter hole in the surface of the desired location,
put the aerials external male bolt through the hole, and tighten the supplied threaded nut from
the underside to lock aerial into position.

UHF 4dB Mopole Antenna (450-520 MHz); Stud Mount No Cable RFI

This versatile ground independent Mopole antenna provides excellent performance in virtually any
mounting position.

When mounted on a vehicle gutter or similar position, this aerial provide optimum performance with a
largely omni-directional pattern. Due to the low angle of radiation inherent in the dipole antenna pattern,
a 4.0 dB improvement in performance is typical when compared to a 3 wave whip in the centre of a metal
roof. This improvement in performance is of particular benefit to users in rugged terrain conditions and
in heavily built up city areas.

The end fed design of the incorporates a truly unique transformer in the base section. In this patented feed
assembly, the dielectric of the coaxial feeder cable is trimmed to a set length and then introduced into the coil
in termination. The result is a precisely matched feed which is so consistent that tuning to frequency from a
chart becomes a matter of course.

This aerial can mount via a threaded stud and nut assembly. The antenna can be easily terminated, tuned and
re-terminated in the field using the instructions supplied. Its patented design allows the coaxial cable to be
replaced in the field without specialised tools or soldering.

Features:

Ground plane independence allows alternative mounting
High performance and largely omni-directional pattern when not centre roof mounted
Patented design allows termination or re-termination in seconds
Stainless steel whip or flexible nylon whips cater to individual needs
Durable – Base coil is virtually indestructible
Unique transformer design
Whip Material: Copper braid element in flexible nylon tubing
Whip Length mm: 360
Cable And Connector: Not included
Tuning: Field tune to minimum VSWR using supplied tuning chart
Band 450 – 520 MHz
Power W: 50
Mounting: Threaded Stud
VSWR: <1.5:1 VSWR
Tuned bandwidth: 13 MHz @ <1.5:1 VSWR