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HamGeek ST7500 400-520MHz 199-Channels Portable Simplex Walkie Talkie LED Display with Flashlight Function
Functions:
- 199 channels
- Flashlight functions
- Digital encryption
- One key to the frequency
- Chinese/English menu
- LED display
- Large capacity lithium battery
- Type-C charging
General Specification:
- Frequency range: 400 - 520MHz
- Frequency engender: phase locked loop frequency
- Channel capacity: 199 channels
- Operating voltage: DC3.7V (battery)
- Antenna: inductively loaded antenna
- Antenna impedance: 50ohms
- Work mode: same frequency simplex/different frequency simplex
- Ground method: negative electrode
- Channel spacing: 12.5/25KHz
- Working temperature: -20℃ ~ +60℃
- Frequency stability: +/- 2.5PPM
- Dimension: 145 x 61 x 46mm
- Net weight: 255g
- Built-in battery capacity: 4800mAh
Transmitter Parameter:
- RF power output: 10W
- Modulation type: F3E
- Modulation distortion: ≤5%
- Max frequency deviation: ≤±5KHz
- FM noise: ≤ -45dB
- Sparious radiation: < -60dB
- Preemphassis character: 6dB
- Frequency characteristic: ±3dB
- Signal noise ratio: 40dB
Receiver Parameter:
- Sensitivity (12dB SINAD): 0.16uV
- Selectivity: 55dB
- Adjaceng channel selectivity: ≥70dB
- Noise respond: ≥60dB
- FM noise: 45dB/40dB
- Modulation type: F3E
- Audio distortion: 1W
- Audio distortion: < 5%
- Intermodulation interference resistance: ≥60dB
- Standby current: ≤20mA
Package Included:
- 1 x Walkie Talkie
