Ritron RIT44-465 Manual Do Utilizador
4
2.
INTRODUCTION
2.1
GENERAL
The RITRON RLR-465NX NXDN repeater is a synthesized table-top UHF repeater that operates in the
450 to 470 MHz FM communications band. This repeater is designed to handle super narrow band 6.25
kHz NXDN signals only. Its maximum output power level is 10 watts. Depending upon the type of power
supply which is available to power the unit it can be programmed for power output from 2 to 10 Watts. The
unit receives signals originating from handheld, mobile, or fixed stations on one frequency and
simultaneously retransmits the signals on a second frequency. This type of operation is described as full
duplex. The unit contains an integral duplexer which allows a single antenna to be used for simultaneous
transmission and reception. Full duplex operation with a repeater enables mobile and handheld units to
communicate over much greater distance than is possible without a repeater. The Repeater is designed to
be powered from an external DC power source. It draws about 140 mA in RX mode making it ideal for use
with a 12 volt lead acid battery.
The received NXDN signal is demodulated and is error corrected. The retransmitted signal is thus cleaned
up and received noise is not repeated as in a conventional analog repeater. All NXDN signals received can
be repeated. However, if the operator chooses, only specific received RAN codes are allowed to repeat. A
table of up to 10 RAN codes allows filtering of what can be repeated.
2.2
INSPECTION
Inspect the unit immediately after delivery and report any damages to the shipping company. The repeater
package should contain:
RLR-465NX repeater
RPS-3000 3Amp 13.8 VDC power supply
DC power supply cable
RLR-PCPS programing software
2.3
DC power supply cable
RLR-PCPS programing software
2.3
MODEL IDENTIFICATION
The Repeater’s model, serial number, and FCC identification number appear on a label attached to the rear
panel.
2.4
FCC REGULATIONS
The Federal Communications Commission (FCC) requires that the radio owner obtain a station license
before using the equipment to transmit. The user is not required to obtain an operating license. The station
licensee is responsible for proper operation and maintenance of his radio equipment and for ensuring that
transmitter power, frequency, and occupied bandwidth are within the limits specified by the station license.
This is effected by aligning the unit per the instructions in the Alignment section of this manual as well as
periodically checking that transmitter and deviation. Because the RLR-465NX contains a transmitter, THE
REPEATER MUST BE LICENSED BEFORE USE. A RITRON dealer can help with obtaining an FCC
license. There are no user adjustments available inside this product. All alignment steps and adjustments
including programming frequency, trimming frequency, setting modulation and power must be performed
by a qualified two-way radio technician. The programming software and hardware is available only to
RITRON authorized radio dealers and must not be made available to the end user.
2.5
RF SAFETY ISSUES
On August 25, 1997, the FCC adopted the second of two Orders finalizing its rules regarding compliance
with safety limits for human exposure to radio frequency (RF) emissions. All transmitting facilities,
operations and devices regulated by the FCC, including this product, must be in compliance with the RF
exposure limits contained in Code of Federal Regulations (CFR) 47 parts 1.1307(b)(1)-(b)(3). It is the
responsibility of the licensee or grantee to either take action to bring the facility, operation or device into