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Ritron RLR-460 Manual

Uhf analog liberty repeater, 2 watt and 5 watt, 12.5khz
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Model: RLR-460 and RLR-465
UHF Analog Liberty Repeater, 2 Watt and 5 Watt, 12.5kHz
ALIGNMENT AND DUPLEXER TUNING INSTRUCTIONS
FOR USE BY AUTHORIZED SERVICE/MAINTENANCE PERSONNEL ONLY
Ritron Pub: RLR-460/465-ALIGN
01/21
© 2021 Ritron, Inc. All rights reserved.
Ritron, Inc. is a registered trademarks of Ritron, Inc.
Call 800-USA-1-USA
For the right Wireless Solutions for your communication needs.
505 West Carmel Drive, 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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Summary of Contents for Ritron RLR-460

  • Page 1 Ritron Pub: RLR-460/465-ALIGN 01/21 © 2021 Ritron, Inc. All rights reserved. Ritron, Inc. is a registered trademarks of Ritron, Inc. Call 800-USA-1-USA For the right Wireless Solutions for your communication needs. 505 West Carmel Drive, Carmel, Indiana 46082-1998 · Ph: 317-846-1201 · Fax: 317-846-4978 Email: ritron@ritron.com ·...
  • Page 2 DISASSEMBLY Remove the power and interface connectors before disassembling the unit. The unit is disassembled for alignment/service by removing the six T-10 torx screws from the end plate with the antenna connector as indicated by the white arrows. The cover with the other end plate is then slid off. DUPLEXER The duplexer allows the Repeater to simultaneously transmit and receive.
  • Page 3 (it can then be programmed off). This parameter is, however, set at the factory. 6. Refer to the RLR-460 ALIGNMENT POINTS diagram at the end of these instructions and the accompanying photos for the location of alignment points and adjustments.
  • Page 4 TRANSMITTER If the Duplexer required re-tuning, reconnect the RX and TX Phono connections to the RX and TX RF Input connectors on the Radio Board Assembly. 2. Connect the Repeater Antenna Port to the Full Duplex Input/Output of the Service Monitor. Provisions should be made to couple the RF output signal to a demodulator, a frequency counter, and an RF wattmeter.
  • Page 5 5. Plug in an RJ-11 Plug with 6-Wire Cable. The transmitter will be keyed by taking pin 3 of the modular jack (PTT/MIC) to ground. Connect wire as shown. Touch the unconnected end of the wire to any available ground to key the repeater.
  • Page 6 3. Using an insulated tuning tool, adjust C203 inside the VCO/synthesizer shield (TX VCO TUNE) for 2.5 +/-0.25 volts at TP102. The red front panel LED should be illuminated continuously (not blinking) after the probe is removed. Unkey the transmitter. Replace the foil over the tuning hole. Transmitter Output Power Key the transmitter and note the output power.
  • Page 7 2. Set R347 (TONE DEVIATION) to the full counterclockwise position to prevent any signaling tone from being transmitted. 3. The RF output should be routed to an FM demodulator and the demodulated output made visible on an oscilloscope. The filtering on the demodulator should be 15 kHz or higher on the lowpass filter and below 50 Hz on the highpass filter.
  • Page 8 Tone Deviation 1. Key the transmitter and adjust R347 (TONE DEVIATION) for the desired tone/code deviation, typically 400 Hz. 2. Unkey the transmitter. RECEIVER 1. Apply power to the Repeater. The green front panel LED should be illuminated, but may be blinking. 2.
  • Page 9 2. Remove the Copper Tape covering the RX VCO Tuning hole. Connect the ground lead of the probe to the PCB ground. The mounting legs of the receiver input connector J100 can be used. Touch the probe tip to TP101 and note the voltage on the oscilloscope.
  • Page 10 Receiver Front-End Tuning Note: Connect the MON input (modular jack pin 4) to ground (modular jack pin 1). This will keep the Squelch function from muting the receiver. 1. Connect a SINAD meter to the AUDIO OUT output (pin 5) to Ground (pin 1). Set R330 (SPEAKER AUDIO LEVEL) to mid rotation.
  • Page 11 Audio Output Level 1. Increase the RF signal generator output level to 7uV (-90dBm) and add a 100Hz CTCSS Tone at +/- 450Hz deviation. The SINAD reading should be close to 20 dB or so. Connect an oscilloscope to the AUDIO OUT (pin 5) on the modular jack.
  • Page 12 3. The transmitter should automatically key (red LED illuminated). Adjust R328 (REPEAT AUDIO LEVEL) for +/- 1.8 kHz deviation. Reduce the RF signal generator level to minimum to unkey the transmitter. RE-ASSEMBLY 1. Disconnect all equipment from the repeater radio assembly. 2.
  • Page 13 FINAL TEST – DESENSE 1. Connect the Full Duplex Input/Output of the Service Monitor to the Repeater Antenna Connection. 2. Apply power to the Repeater. 2. Set the Generated RF Signal of the Service Monitor to the Receive Frequency of the Repeater. Set the RF level low enough as to not cause the Repeater to transmit.

This manual is also suitable for:

Rlr-465