The Hytera radio models S1 (licensed) and S1 LF (License Free) redefines the business-ready analog radio. It blends classic radio elements with exquisite craftsmanship and forward fashion. From form factor to user experience, the S1/S1 LF breaks with tradition to shape the trend of next-generation business radio—modern, simple, and timeless.
General | |
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Model | HYT-S31 (licensed) HYT-S31 LF (PMR446 license free) |
Frequency Range | UHF: 400-470 MHz PMR446: 446 MHz |
Operating modes | Analogue |
Channels & zones | Channel capacity: 48 Zone capacity: 3 Channels per zone: 16 |
Channel Spacing | 12.5kHz / 20kHz / 25kHz |
Operating Voltage | 3.8 V (rated) |
Battery | 2200mAh Li-Polymer |
Battery Life (5/5/90 Duty Cycle, TX Power) | 15 hrs (Tx power 3W) 22 hrs (Tx power 1W) 27 hrs (Tx power 0.5W) |
Frequency Stability | ±2ppm |
Antenna Impedance | 50 Ω |
Dimensions (HxWxD) | 108 x 53 x 20 mm (without antenna) |
Weight (with battery and antenna) | 145 g (with belt clip) 135 g (without belt clip) |
Bluetooth | BT 5.0 BLE (only data) |
Receiver | ||
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Conducted Spurious Emission | <-57 dBm | |
Audio Response | +1~-3 dB | |
Rated Audio Distortion | ≤5% | |
Sensitivity(Analog) | 0.14 μV (12 dB SINAD) | |
Adjacent Channel Selectivity | ETSI: 60 dB @12.5kHz / 70 dB @20/25kHz | |
Intermodulation | ETSI: 65 dB @12.5/20/25kHz | |
Spurious Response Rejection | ETSI: 70 dB @12.5/20/25kHz | |
Blocking | ETSI:84dB | |
Hum&Noise | 40 dB @12.5 kHz 43 dB @20 kHz 45 dB @25 kHz | |
Rated Audio Power Output | 0.5W |
Transmitter | ||
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Audio Distortion | ≤3% | |
Adjacent Channel Power | 60 dB @12.5 kHz 70 dB @20/25 kHz | |
FM Hum&Noise | 40 dB@12.5 kHz; 43 dB@20 kHz; 45 dB@25 kHz | |
Modulation Limiting | ±2.5 kHz@12.5 kHz; ±4.0 kHz@20 kHz; ±5.0 kHz@25 kHz | |
Conducted/Radiated Emission | -36 dBm<1 GHz -30 dBm>1 GHz | |
FM Modulation | 11K0F3E @12.5 kHz 14K0F3E @20 kHz 16K0F3E @25 kHz | |
Power Output | 1W / 3W (400-470 MHz) 0.5 W (446MHz) | |
Audio Response | +1 ~ -3 dB |
Environment | ||
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Storage Temperature | -30°C to +70°C | |
ESD | ±4kV (Contact) ±8kV (Air) | |
Operating Temperature | -10°C to +55°C |