100kHz-149MHz FM SDRDSP2 Radio Receiver 1. Display technology: 4.3-inch IPS 800x480 resolution DC dimming high-brightness LCD 2. Control method: resistive touchscreen + rotary encoder 3. Frequency range: 100kHz – 149MHz 4. Operating modes: CW, AM, SSB (LSBUSB), WFM, FM broadcast stereo (headphones required) 5. Frequency step: 1Hz10Hz100Hz1kHz10kHz100kHz1MHz10MHz 6. Spectrum bandwidth: 192kHz, 128kHz, 64kHz, FFT real-time spectrum display 7. Antenna interface: BNC male connector, 50ohm impedance, input power -20dBm (MAX) 8. Reference crystal oscillator: TCXO 26MHz 9. Audio interface: supports standard 3.5mm headphones or CTIA (American standard) interface headphones 10. Speaker power: 3W, 4ohm multimedia speaker 11. Charging port: USB Type-C, 5.0V2A 12. Current consumption: approximately 250mA @ 5V 13. Battery capacity: 5000mAh3.7V, 18.5Wh 14. Usage time: approximately 10-12 hours, depending on volume and brightness settings 15. Channel storage: 99 preset channels, including station name, frequency, and demodulation method 16. RF preamplifier gain: fixed 20dB 17. Circuit type: zero Intermediate Frequency (ZIF) 18. Sideband suppression: 50dB 19. Dimensions: 140 x 74 x 22mm 20. Weight: approximately 315g (main unit only)