Procom ML 3-ZP4 User Manual
Ml 3-zp4

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 @ f
c
± 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)