Manual

ML 3-ZP4
Helical Mobile Antenna for the 80 MHz Band
DESCRIPTION
Reduced-size quarter-wave antenna for all applicatons where height is a
problem.
Ideal on busses, trucks, building-site machines, forestry vehicles etc.
High efficiency due to the “continuous loading” helical principle.
Stainless steel ZP4-mount with ball-joint and wing screw whip-fastening
system.
Simple mounting exclusively with access from the outside.
Models for roof thickness from 2 mm to 7.5 mm with mounting from the
inside.
Delivered with 4 m cable permanently attached to the mount and
terminated with FME-connector.
Please note that the ML 3-type ZP4-mount is provided with a built-in matching unit. Consequently, the
mount cannot be used together with other whips.
ORDERING DESIGNATIONS
TYPE PRODUCT NO.
ML 3-ZP4 130000655
SPECIFICATIONS
ELECTRICAL
MODEL ML 3-ZP4
ANTENNA TYPE Shortened ¼ λ helical antenna
FREQUENCY Tunable by cutting within: 66....88 MHz
IMPEDANCE Nom. 50 Ω
POLARIZATION Vertical
GAIN Approx. - 3 dB (acc. to EIA RS-329-1)
SWR
≤ 2.5 @ fc ± 0.5 MHz
MAX. POWER 30 W
MECHANICAL
MATERIALS Whip:
Steel helix moulded in flexible thermoplastic rubber
Chromed brass
Mount:
Chromed brass
Weather- and shockproof plastics
Stainless steel
RECOMMENDED
INSTALLATION
TORQUE
7.5 ± 1 Nm
CABLE 4 m RG 58
COLOUR Bright/black
HEIGHT Approx. 37 cm
WEIGHT Approx. 400 g
MOUNTING ø21 mm dia. hole
(For roof thickness 2 mm up to 7.5 mm
mounting hole should be ø22 mm dia.)
ROOF THICKNESS Max. 2.0 mm
(Models up to 7.5 mm on request)