Use two different time slots of a Frequency to transfer signals, saving frequency and channel resources, Suit for Motorola, Hytera, Kenwood DMR radios, and Retevis RT54(Only).
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Retevis RT74 Single Frequency DMR Repeater
DMR Digital Direct Mode (TX = RX same Frequency) Repeater, Retevis RT74 single Frequency Repeater with 20w high power, it use one frequency's two time slot to achieve the signal transfer to get longer calling distance, different from the traditional relays that need to use high transmission and low reception, or low transmission and high reception, and the transmission and reception frequencies must have a frequency difference. Retevis RT74 single Frequency Repeater can help you save frequency resources, make your walkie talkie get longer calling distance.
Retevis RT74 DMR Repeater Features:
Lightweight, ultra-portable design, can be deployed quickly.
DMR system supports TDMA.
No need duplexer
Support single frequency repeater mode (repeater function can be realized by using one frequency)
Power 20W/10W adjustable.
No duplexer is required.
Strong anti-interference ability, support encryption.
2.0'' HD color LCD large screen display, IPS full-view, soft keyboard operation
1600 channels and 100 zones supported.
Support Private call and group call.
Zone selected, Single frequency transfer, Multiple call method options, and SMS Function
Digital processed voice, clear and loud.
Note: Retevis RT74 single frequency suit for Motorola, Hytera, Kenwood DMR radios, and Retevis RT54(For now).
Retevis RT74 DMR repeater plus hand microphone can be used as a base station, if you need hand microphone, please contact us.
Package Include:
1 x Retevis RT74 Single frequency repeater
1 x AC power supply cable
1 x Wall panel
1 x Screws
1 x Fuse
1 x User manual
| General | |
| Product number | RT74 |
| Frequency range | UHF：400-470Mhz |
| Channel number | 1600 |
| Zone | 100 |
| Channel spacing | 12.5Khz/25Khz |
| working voltage | DC 13.8V(±20%), AC 100-240V; |
| The antenna impedance | 50Ω |
| Overall dimensions | 282 L* 241 W*56 H mm |
| frequency stability | ±0.5 ppm |
| Weight | ≥3.2 Kg |
| Transmitter | |
| Rf power | High:20W, Low:10W |
| 4FSK modulation system | Only data: 8K50F3E,Voice and data:7K60FXE; |
| FM Modulation | 12.5Khz:8K50F3E; 25kHz:16KOF3E; |
| Modulation Limiting | ±2.5Khz @ 12.5Khz;±5.0Khz,@25Khz |
| FM dB | -40dB @12.5khz, -45dB @25khz |
| Emission spurious | -36dBm ≤1Ghz/-30 dBm ≥1Ghz |
| Adjacent-channel Power | -60dB/12.5Khz -70dB /25Khz |
| Frequency Response | +1/ -3dB |
| Audio Distortion | 3% |
| Digital encoder | AMBE |
| RECEIVER | |
| Analogue sensitivity | 0.225μV (12dB SINAD) |
| Digital sensitivity | (5% BER) 0.225μV |
| Inter modulation | 65dB |
| Adjacent channel selectivity | 60dB@12.5kHz / 70dB@25kHz |
| Spurious rejection | 70 dB |
| FM hum &noise | -40dB@12.5kHz / -45dB@25kHz |
| Audio response | +1~-3dB |
| Rated audio output power | 3W (loudspeaker) |
| Audio distortion | 3% (typical) |
| Conduction stray | -57dBm |