Ritron RLR-465NX Maintenance And Operating Manual

Uhf, nxdn digital liberty repeater, 10w, 6.25khz
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Model: RLR-465NX
UHF, NXDN
Digital Liberty Repeater, 10W, 6.25kHz
MAINTENANCE / REPAIR / OPERATING MANUAL
FOR USE BY AUTHORIZED SERVICE/MAINTENANCE PERSONNEL ONLY
Ritron Pub: RLR-465NX-MRM
05/18
© 2018 Ritron, Inc. All rights reserved.
®
®
®
®
®
®
®
Ritron
, Patriot
, Jobcom
, OutPost
, GateGuard
, Quiet Call
, Quick Assist
are registered
trademarks of Ritron, Inc.
Quick Talk™, Liberty™ and RadioNexus™ are trademarks of Ritron, Inc.
NXDN™ is a trademark of JVC Kenwood Corporation
Call 800-USA-1-USA
For the right Wireless Solutions for your communication needs.
P.O. Box 1998 · Carmel, Indiana 46082-1998 · Ph: 317-846-1201 · Fax: 317-846-4978
Email: ritron@ritron.com · www.ritron.com
Have questions? Call 800-USA-1-USA (800-872-1872) or visit our website at
www.ritron.com
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  • Page 1 , Quiet Call , Quick Assist are registered trademarks of Ritron, Inc. Quick Talk™, Liberty™ and RadioNexus™ are trademarks of Ritron, Inc. NXDN™ is a trademark of JVC Kenwood Corporation Call 800-USA-1-USA For the right Wireless Solutions for your communication needs.
  • Page 2: Table Of Contents

    RLR-465NX UHF, NXDN™ Digital Liberty Repeater Table of Contents SPECIFICATIONS .............................. 3 INTRODUCTION ..............................4 GENERAL ..............................4 INSPECTION ............................. 4 MODEL IDENTIFICATION ........................4 FCC REGULATIONS ..........................4 RF SAFETY ISSUES ..........................4 RITRON, INC. LIMITED WARRANTY....................... 6 OPERATION ............................... 8 GENERAL OPERATION ...........................
  • Page 3: Specifications

    RLR-465NX UHF, NXDN™ Digital Liberty Repeater Specifications SPECIFICATIONS GENERAL Modulation Format NXDN Super Narrowband Frequency Range 450-470 MHz FCC ID AIERIT44-465 IC ID 1084A-RIT44465 RX/TX Separation 5 MHz Operational Bandwidth Duplexer 50 kHz Receiver and Transmitter 20 MHz Synthesizer Step Size 6.25 kHz...
  • Page 4: Introduction

    The programming software and hardware is available only to RITRON authorized radio dealers and must not be made available to the end user. 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.
  • Page 5 This radio transmitter (RLR-465NX) has been approved by Industry Canada to operate with the antenna types listed below with the maximum permissible gain and required antenna impedance for each antenna type indicated.
  • Page 6 RLR-465NX UHF, NXDN™ Digital Liberty Repeater Introduction To limit exposure to RF energy to levels below the limit, please observe the following:  DO NOT OPERATE THIS EQUIPMENT unless all RF connectors are secure and any open connectors are properly terminated.
  • Page 7: Ritron, Inc. Limited Warranty

    IMPORTANT: This warranty sets forth the full extent of RITRON’s express responsibilities regarding the covered products, and is given in lieu of all other express warranties. What RITRON has agreed to do above is your sole and exclusive remedy. No person is authorized to make any other warranty to you on behalf of RITRON. Warranties implied by state law, such as implied warranties of merchantability and fitness for a particular purpose, are limited to the duration of this limited warranty as it applies to the covered product.
  • Page 8: Operation

    The Repeater is designed to accept a 13.8 volt / 3 Amp regulated power source using the included RITRON power supply and will provide up to 10 watts of transmit output power, measured at the antenna connector. See the duty cycle/temperature limits below. The transmitter power output can be programmed to vary from 2 watts to the 10 watts.
  • Page 9: Indicators

    RLR-465NX UHF, NXDN™ Digital Liberty Repeater Operation INDICATORS There are three LED indicators, green, amber and red, on the front panel. Their operation is detailed below: Indicator Function Status Green Power-On Off: Unit not powered-up Blinking: Receiver Synthesizer Out-of-Lock Steady On:...
  • Page 10: Interface Connector

    3.4.4 Mini USB programming port For use with the Ritron RLR-PCPS programming software. Connect the programming cable between the USB port on the repeater and the USB port on the PC. Have questions? Call 800-USA-1-USA (800-872-1872) or visit our website at...
  • Page 11: Repeater Features

    RITRON. The purchase of RITRON, Inc. products does not grant any license or rights under the copyrights or other intellectual property of RITRON, Inc., except for the non- exclusive, royalty-free license to use that arises in the sale of a product, or as addressed in a written agreement between RITRON, Inc.
  • Page 12: Theory Of Operation

    The repeater can be set up to repeat all super narrowband signals on the receive frequencies or be set up via a table to repeat only certain RAN codes. For further explanation see the RITRON programmer and help file. The unit draws about 130 mA in receive mode and about 2.3 Amps in transmit mode. This allows it to be battery operated or battery backed up.
  • Page 13: 1St Local Oscillator/Receive Synthesizer

    RLR-465NX UHF, NXDN™ Digital Liberty Repeater Theory of Operation filtered by the FL103, the 2nd IF filter. This filter is a bandpass filter with a bandwidth of 4 kHz and an insertion loss of 5 dB. The output of the filter re-enters U102 at pin 5 where it is amplified and then limited to remove amplitude modulation components.
  • Page 14: Rf Power Amplifier Stages

    5) Power supply under voltage monitoring via U103-B. Useful when a battery only supply is used. 6) Low voltage voice message and can be programmed via RITRON programmer and portable radio. 7) Sends CW ID periodically. Programmable 1 to 34 minutes.
  • Page 15: Factory Alignment

    RLR-465NX UHF, NXDN™ Digital Liberty Repeater Factory Alignment FACTORY ALIGNMENT RX SMB connector RX BPF tuning caps TP101 RX VCO C150 TP102 4 Amp fuse TX SMB connector RF power adj C206 TX VCO C296 TP201 J308 FIG 2: Alignment...
  • Page 16: Receiver

    Adjust the C150 band shifting cap to yield a 3.8 +/- 0.2 VDC tuning voltage on TP102. The RX band will now operate anywhere in the 20 MHz RX band after being programmed to that frequency by the RITRON programmer. The VCO tuning voltage will range from about 1 volt at 450 MHz to 4 volts at 470 MHz.
  • Page 17: Transmitter

    RLR-465NX UHF, NXDN™ Digital Liberty Repeater Factory Alignment TRANSMITTER Connect the TX RF port J201 of the PCB to the service monitor. Do not go through the Duplexer since we will need to tune at various frequencies across the 450 to 470 MHz range.

This manual is also suitable for:

Liberty

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