Product Description
Features of 5-TONE, 2-TONE,128channles LT-990 mobile radio transceiver :
- VHF136-174, UHF400-470MHz
- 128 channels
- DTMF, 5-TONE, 2-TONE, CTCSS/DCS
- Inspection, monitor, stun and kill function
- Audio compander, scrambler
- High/Low power output switchable
- Multi-scan mode
- Emergency alarm
- Busy channel lock out (BCL)
- TOT Time-out timer (TOT)
- PC programmable
Technical Specifications of 5-TONE, 2-TONE,128channles LT-990 mobile radio transceiver
| General | |
| Frequency range | VHF:134-176MHz |
| UHF:400-470MHz/450-520MHz | |
| Channels | 128 channels |
| Channel spacing | 25KHz(wide)/12.5KHz(narrow) |
| Channel step | 5KHz,6.25KHz |
| Voltage | 13.8V DC, cathode grounded |
| Current | Transmitting <8A, receiving <1A, standby <0.4A |
| Operating temperature | -30°C— +60°C |
| Frequency stability | ≤±2.5ppm |
| Antenna impedance | 50Ω |
| Dimension | 145(L)×135(W)×40(H)MM |
| Weight | 1020g |
| Receiver | |
| Sensitivity(at 12dB SINARD) | ≤0.25uV(width) ≤0.28µV(narrow) |
| Adjacent channel selectivity | ≥75dB(width) ≥70dB(narrow) |
| Intermodulation rejection | ≥75dB |
| Spurious response rejection | ≥75dB |
| Block | ≥95dB |
| Audio output power | 2W(inner) 4W(external) |
| Audio response | +1/-3dB |
| Audio distortion @ Rated audio | ≤3 |
| Transmitter | |
| Power output | 25W |
| Clutter&harmonic | -36dBm<1GHz -30dBm>1GHz |
| FM noise | 45dB(width)/40dB(narrow) |
| Modulation mode | 16KΦF3E(width) / 8KΦF3E(narrow) |
| Max frequency deviation | ≤±5KHz(width) /2.5KHz(narrow) |
| Speaker impedance | 600Ω |
| Audio response | +1/-3dB |
| Audio distortion | ≤3% |
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