MT-4E VHF & UHF Receiver & Transmitter Instruction Manual
IM08-MT-4E-TXRX-P1162
1
IntRoduCtIon
The MT-4E Receiver and Transmitter are FM
radio modules capable of analog operation
in 12.5 kHz (narrow band) or 25 kHz (wide
band) channels. A firmware upgrade may be
purchased to allow P25 Digital operation.
Modular design allows each of the receiver and
transmitter’s internal modules to be individually
assembled and tested, which facilitates
construction, tuning and general maintenance.
The MT-4E Receiver and Transmitter combine
state of the art performance in a compact
modular enclosure for applications ranging from
remote mountain top repeaters to congested
urban radio environments. Each module is
characterized by dependable, low maintenance
performance under the most severe
environmental conditions.
The MT-4E Receiver and Transmitter are
primarily software controlled radio modules,
allowing tuning, programming and maintenance
to be done via software service with few
hardware adjustments required.
The MT-4E series is compatible with all Daniels’
subrack and base station enclosures. It supports
a basic analog interface and may be used in
a mixed system with MT-3 and MT-4 series
receivers and transmitters.
P25 digital Mode
When the P25 firmware upgrade is purchased,
the MT-4E family of receivers and transmitters
may be configured for P25 Digital operation,
or mixed mode operation. In a repeater
configuration, the receiver passes the complete
P25 Digital voice packet directly to the
transmitter so no P25 Digital information is lost.
All P25 specifications, operational description
and information contained in this instruction
manual require the P25 firmware upgrade to
function. If the MT-4E Receiver and Transmitter
are purchased without the P25 firmware
upgrade, the radio will program and operate in
analog mode only.
NOTE:
This equipment is not to be operated
within the frequency band
406–406.1 MHz unless specifically
authorized by the Federal
Communications Commission or Industry
Canada in conjunction with COSPAS /
SARSAT.
GEnERal InFoRMatIon
NOTE
: The General Information and the Theory of Operation sections are common for all models of
MT-4E Receivers and Transmitters. Information that is specific to individual models will be
identified where relevant.
