| All of items are brand new and high quality | |
| Model | BF-777S |
| Basic Description | |
| Antenna Impedance | 50ohm |
| Working temperature | -30 to +60℃ |
| Rated Voltage | 3.7V DC |
| Output power | <5W |
| Battery type | Li-ion battery |
| Battery capacity | 1500mAh |
| Color | Black |
| Duall frequency or Single frequency | Single frequency |
| Dual band or Single band | Single band |
| Frequency Range | UHF:400-470MHz |
| Memory Channel | 16 |
| Channel Spacing | 25KHz |
| Battery Life(5-5-90 duty cycle) | About 8 hours |
| Frequency Stability | ±2.5ppm |
| Communication Range | About 6km |
| Dimensions (L x W x H) | 115 x 60 x 33 mm |
| Weight | 180g |
| Transmitter | |
| Output Power | ≤5W |
| Modulation(W/N Band) | F3E |
| Spurious Power | ≤7.5 µW |
| Maximum Frequency Deviation (W/N Band) | <5KHz(W)， <2.5KHz(N) |
| Audio Distortion | ≤5% |
| Spurious Radiation | <-60 dB |
| SNR | 45 dB(W)， 42dB(N) |
| Transmitting Current | ≤1200mA |
| CTSCC/DCS Frequency Deviation(W/N Band) | 0.7±0.1KHz (W)， 0.4±0.1KHz (N) |
| Adjacent channel power | 65dB (W) ，55dB (N) |
| Receiver | |
| Sensitivity (12dB SINAD) | <0.20 µ V (12dB SINAD) |
| Audio Power | 1 W |
| Inter modulation Interference Resistance | ≥65dB (W)， ≥55dB (N) |
| Adjacent channel Sensitivity (W/N Band) | ≥65dB (W)， ≥55dB (N) |
| Audio Distortion | 5 % |
| Receiving Current | ≤ 400m A |
