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MTR2000 - Motorola
https://www.motorolasolutions.com/content/dam/msi/docs/business/products/cellular_networks/base_stations/mtr2000/_documents/static_files/mtr_2000_800_900_catsheet.pdf
Audio Response: +1,-3 dB from 6 dB per octave +1,-3 dB from 6 dB per octave de-emphasis; 300-3000 Hz de-emphasis; 300-3000 Hz referenced to 1000 Hz referenced to 1000 Hz at line input at line input Audio Distortion: Less than 3% at 1000 Hz; Less than 3% at 1000 Hz; 60 % RSD 60 % RSD Line output: –20 dBm to 7 dBm, @ full –20 dBm to 7 dBm, @ full
Motorola MTR2000 Information Index - Repeater Builder
http://www.repeater-builder.com/motorola/mtr2k/mtr-index.html
Issue 1: MTR2000 station locks up in transmit with no PL. Issue 2: MTR2000 station does not transmit an analog audio on wireline line 2. Motorola has identified a firmware issue in all versions prior to and including version R03.04.002 and has a warranty fix. The PDF file linked above includes a software order form.
Additional Motorola MTR2000 Interfacing Information
https://www.repeater-builder.com/motorola/mtr2k/more-mtr2k-int/mtr2000-interfacing-followup.html
This is an update to the "Interfacing the MTR2000 to an External Controller (Arcom RC210)" article. I have found a way to get the MTR2000 to pass audio with the internal PL/DPL tone intact, without an external tone generator. Background: The guys at the Reno Ham Radio Club provided an excellent article on interfacing an MTR2000 to the RC210.
MTR 2000 Base Station - Motorola Solutions
https://www.motorolasolutions.com/en_us/products/two-way-radios/mototrbo/discontinued/mtr2000.html
MTR 2000 Base Station. Motorola's MTR 2000 Station/Repeater/Receiver is a continuous-duty analog base/repeater station for use on both conventional and trunking systems in the VHF, UHF, and 800 and 900 MHz bands. Onboard self-testing and a microprocessor-based design keeps system up-time at a maximum. Specifications. How to Buy.
MTR2000 External Repeater Interfacing Signals Summary
https://www.repeater-builder.com/motorola/mtr2k/mtr2000-intf-summary.html
All audio signals should utilize a 10uF 16V electrolytic capacitor in series with any external equipment as the station's audio circuitry is biased at +4.8VDC. Point the …
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