Model : HMVR-150-20
1. Summary
A tunnel repeater guarantees to be stable for seamless voice call between tunnels and trains. HMVR-150- 20 is installed at the entrance of the tunnel to repeat broadcast signals from the base station to the tunnel & the radio shadow areas. It adopts an optical transmission method to minimize loss generated from the line. A Built-in Automatic-switchover Dualized RF Amplifier provides stable voice quality in the tunnel.
2. Features & Functions
- -Easy handling by the built-in modular typed transceiver
- -Built-in TEST UNIT is able to make a test call between service areas
- -CASCADE connection method ensures high reliability
- -Optical connection with MU makes minimizes transmission loss
- -Providing Auto-disconnecting function with built-in dualized amplifier
- -Consisting of main & sub Power supply
3. Appearance
4. Standard
| Parameter | Standard |
|---|---|
| RF Amplifier |
High Frequency Output: 15W(Max 20%, Min 50%) Output Impedance: 50Ω Spurious Suppression: Less than -60dBc (a carrier wave) |
| Transmitter |
Modulation way: 16K0F3E(Wideband), 8K5F3E(Narrowband) FM Noise Control: Less than -40dB (with 1kHz, 70% Modulation) Frequency Stability: ±0.0005% Modulated Frequency Feature: 6dB/OCT±3dB Pre-Emphasis(0.3~3KHz) Low Frequency Distortion Rate: Less than 5% (with 1kHz, 70% Modulation) Maximum Frequency Deviation: ±5kHz(Wideband), ±2.5kHz(Narrowband) |
| Receiver |
Bandage: with -6dB 12.5kHz or higher(Wideband), with -6dB 8kHz or higher(Narrowband) Adjacent Channel Selectivity: with -70dB Less than 25kHz (Wideband), with -60dB Less than 12.5kHz (Narrowband) Receiving Sensitivity: Less than 0.5㎶ (with 20dB Noise Suppression) Squelch Sensitivity: Less than 0.25㎶ Low Frequency Output: 0dBm±3dB SINAD : 40dB or higher(1KHz 70%) Low Frequency Distortion Rate: Less than 5%(1kHz, 70%) |
| Optical Transmitter |
Wavelength : M;1300~1320nm, S;1540~1560nm Optical Output: 3dBo(±30%) Band With : 100㎒~200㎒ RF Link Gain : 0dBm±1dB Optic Connecter : SC/APC |
| Controller |
Low Frequency Output: 1W or higher(4Ω, 10% Distortion) SINAD: 40dB or higher Low Frequency Distortion Rate: Less than 5% (1kHz, 70%) |
| Power |
Input Voltage: AC 220V±10%60㎐ Output Voltage: DC 13.8V±10%(Flexible) Output Current Capacity: 20A or higher |
*The above values of the parameters can be subject to change for the purpose of device improvement.
