Manual

MA 2-1 SC
Marine VHF Antenna with Low Weight and Wind Load for
Masthead Mounting
DESCRIPTION
This marine VHF antenna is designed especially for mounting at the
masthead of sailboats. The dimensions have been kept as small as
possible to reduce weight, wind load and cost.
Despite the small dimensions the efficiency is very high, and the
antenna is fully capable of handling the full 50 W of output power from
typical marine VHF transmitters.
The tapered ½ λ stainless steel radiator together with the chromed
brass housing and stainless steel corner bracket constitute an 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 PRODUCT NO.
MA 2-1 SC 110000133
SPECIFICATION
ELECTRICAL
MODEL MA 2-1 SC
ANTENNA TYPE ½ λ dipole, end-fed
FREQUENCY 156 – 162 MHz
IMPEDANCE Nom. 50 Ω
POLARIZATION Vertical
GAIN 2 dBi 0 dBd
BANDWIDTH 6 MHz
SWR <1.3 @ f.res
MAX. POWER 50 W
MECHANICAL
TEMP. RANGE -30° C → +70° C
CONNECTOR UHF-female
WIND SURFACE 0.0076 m²
WIND LOAD 8.9 N @ 150 km/h
COLOUR Bright chromed
MATERIALS Whip : Stainless steel
Housing: Chromed brass
TOTAL HEIGHT Approx. 1.08 m
WEIGHT Approx. 265 g
MOUNTING With fast screws, rivets or binder
TYPICAL GAIN AND SWR CURVES
TYPICAL RADIATION PATTERN (E-PLANE)
TYPICAL RADIATION PATTERN (H-PLANE)