Ritron Liberty RLR-460 Manual Download Page 1

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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

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

· www.ritron.com

Have questions?

Call 800-USA-1-USA

(800-872-1872) or visit our website at

Summary of Contents for Liberty RLR-460

Page 1: ...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 Ca...

Page 2: ...depth Because the notches are very narrow the duplexer must be re tuned if the frequency of operation is changed by more than 50 kHz Follow the procedure below to tune the duplexer 1 Unplug the two R...

Page 3: ...in the same model Separate models exist for each the RLR 460 for narrow the RLR 460 W for wide 4 A communications service monitor capable of duplex operation is required to set R328 REPEAT AUDIO LEVEL...

Page 4: ...or Provisions should be made to couple the RF output signal to a demodulator a frequency counter and an RF wattmeter The demodulated output must be viewable on an oscilloscope 3 Set the Service Monito...

Page 5: ...lid carrier Having a receive QC DQC tone code programmed will help greatly in preventing nuisance keying Transmit VCO Tuning 1 Remove the Copper Tape covering the TX VCO Adjustment hole Connect a high...

Page 6: ...is too low adjust R115 TX POWER clockwise and readjust C180 and C183 Adjust R115 C180 and C183 until the desired output power is reached For 2 watts R115 would typically remain at mid rotation 2 Unke...

Page 7: ...at NO or MINIMUM highpass filtering be in place in the demodulation path 4 While observing the oscilloscope key the transmitter Increase the audio generator level until the 500 Hz sinewave becomes vis...

Page 8: ...e Repeater The green front panel LED should be illuminated but may be blinking 2 Connect the MON input modular jack pin 4 to ground modular jack pin 1 This will override the tone squelch operation and...

Page 9: ...C135 inside the VCO synthesizer RX VCO TUNE shield for 2 5 0 25 volts at TP101 The green front panel LED should be illuminated continuously not blinking when the probe is removed Replace the Copper T...

Page 10: ...The RF output level for 12 dB SINAD should be 0 25uV 119dBm or less Note that all of the inductors have a very broad tuning characteristic except L103 Adjust the inductors in the middle of this broad...

Page 11: ...desired output level of the 1kHz tone 3 Connect the oscilloscope to pin 7 of U300 and adjust R387 for a symmetrical 100Hz square wave Repeat Audio Level 1 For this adjustment the service monitor must...

Page 12: ...ct all equipment from the repeater radio assembly 2 To re assemble the repeater slide the radio assembly into the open end of the repeater enclosure 3 Be sure that the connectors and LEDs line up with...

Page 13: ...e RJ11 Test Jack and connect a wire from Pin 4 Monitor to Pin 1 Ground of the RJ11 Test Jack This will keep the Repeater from transmitting 5 Connect a SINAD Meter to Pin 5 Audio Out to Pin 1 Ground of...

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