Procom MHU 3-SM - Manual

MHU 3-SM
Dual-Frequency Mobile Antenna for the 160 and 450 MHz
Bands
DESCRIPTION
Field-tunable dual-frequency antenna which makes it possible to:
- operate 160 and 450 MHz transceivers alternately on the same
antenna
- operate two transceivers (160 and 450 MHz) at the same time on one
antenna using a diplexer (type DIPX 225/330 – must be ordered
separately).
Only a single hole has to be drilled instead of two.
Car appearance is not destroyed by an “antenna farm”.
Ideal for covert services.
Elegantly designed SM-mount especially suited for mounting on the
curved wings.
Supplied with three different packing gaskets for optimum adjustment to
the wing contour.
M6-thread whip-fastening system.
Mount provided with FME-connection (supplied without cable).
PACKING GASKETS
ORDERING DESIGNATIONS
TYPE PRODUCT NO.
MHU 3-SM 130000777
SPECIFICATIONS
ELECTRICAL
MODEL MHU 3-SM
ANTENNA TYPE Dual-frequency mobile antenna
FREQUENCY 160 MHz frequency within: 140–170 MHz
450 MHz frequency within: 410–490 MHz
IMPEDANCE Nom. 50 Ω
POLARIZATION Vertical
GAIN 160 MHz: 0 dB
450 MHz: 3 dB
BANDWIDTH 160 MHz: ≥ 4 MHz @ SWR ≤ 2.0
450 MHz: ≥ 24 MHz @ SWR ≤ 2.0
SWR ≤ 1.5 @ f. res.
MAX. POWER 100 W
MECHANICAL
MATERIALS Whip:
Black-chromed stainless steel
Black-chromed brass
Mount:
Brass
Weather- and shockproof plastics
RECOMMENDED
INSTALLATION TORQUE
6.5 ± 0.5 Nm
CABLE FME-cable to be ordered separately
COLOUR Black
HEIGHT Approx. 45 cm (dep. on freq.)
WEIGHT Approx. 150 g
MOUNTING Wing mounting using one of three packing
gaskets supplied with the mount
OPERATION USING A DIPLEXER
In case of operating two transceivers on one antenna at the same time, a
diplexer, type DIPX 225/330 is necessary to complete the system. The tasks
of the diplexer are to protect the two receiver inputs from being destroyed
by the transmitter in the contrary band, and to ensure a low-loss path
between the transceiver and the antenna, which is not loaded by the other
branch. For further details please see the separate data sheet on the DIPX
225/330. The diplexer fully covers both bands and, consequently, tuning to
specific frequencies is not required.