User Manual

MA 2-1 MR
Marine VHF Antenna with Low Wind Load
DESCRIPTION
This marine VHF antenna is developed especially for sailboats where low
weight and wind load for a masthead-mounted antenna is essential.
The tapered 1/2 λ stainless steel radiator together with glass fibre
matching unit housing, chrome plated brass parts and stainless steel
corner bracket make this antenna tough and ready to cope with the
corrosive environment at the masthead.
The end-fed dipole principle makes the antenna independent of ground-
plane, radials or other auxiliary arrangements.
The antenna whip should not be mounted parallel or near to other metal
parts such as windex, supporting wires etc. Free mounting and as high
as possible is preferable, otherwise the SWR and the radiation diagram
will be influenced.
ORDERING DESIGNATIONS
TYPE NO. PRODUCT NO.
MA 2-1 MR 110000131
SPECIFICATION
ELECTRICAL
MODEL MA 2-1 MR
ANTENNA TYPE 1/2 λ dipole, end-fed
FREQUENCY 156 – 162 MHz
IMPEDANCE Nom. 50 Ω
POLARISATION Vertical
GAIN 2 dBi 0 dBd
BANDWIDTH 6 MHz
SWR <1.3 @ f.res
MAX. POWER 200 W
MECHANICAL
TEMP. RANGE -30° C → +70° C
CONNECTOR UHF-female
WIND SURFACE 0.0076 m²
WIND LOAD 8.5 N @ 150 km/h
COLOUR Marine white
MATERIALS Shroud : Stainless steel
Housing: Glassfibre and chromed brass
TOTAL HEIGHT Approx. 1.08 m
WEIGHT Approx. 480 g
MOUNTING With fast screws, rivets or binders
TYPICAL GAIN AND SWR CURVES
TYPICAL RADIATION PATTERN (E-PLANE)
TYPICAL RADIATION PATTERN (H-PLANE)