2. INTRODUCTION
2.1 GENERAL
The RITRON RLR-460 Repeater is a synthesized table-top UHF repeater that operates in the 450 to 470
MHz FM communications band. Its maximum output power level is either 2 watts or 5 watts, depending
upon the type of power supply which is available to power the unit. The unit receives signals originating at
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.
2.2 INSPECTION
Inspect the unit immediately after delivery and report any damages to the shipping company.
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 aswell as
periodically checking that transmitter and deviation.
Because the RLR-460 contains a transmitter, THE REPEATER MUST BE LICENSED BEFORE USE. A
RITRON dealer can help with obtaining an FCC license.
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
compliance or file an Environmental Assessment with the FCC. The repeater itself will comply without
any special action. The antenna, however, must be designed and sited in such a way that persons in its
vicinity will not be exposed to RF levels above those specified. In addition, the following precautions
should be taken with regard to the use of this equipment:
This product has been evaluated for compliance with the maximum permissible exposure limits for RF
energy at the maximum power rating of the unit and with the whip antenna available from RITRON. To
ensure compliance with General Population/Uncontrolled maximum exposure limits, all persons must be at
least 20 cm (7.9 inches) from the antenna while the unit is transmitting. Other antennas may require lesser
or greater distances to meet the limits depending upon their gains relative to that tested. Higher gain
antennas are capable of yielding a higher RF energy density in the strongest part of their field and would,
therefore require a greater separation from the antenna.
