This Product Implements Frequency Mixing Based On The Tayloe Quadrature Product Detector . The Clock Generator Si5351 Generates Two Orthogonal Square Wave Signals With Variable Frequencies As Excitations, Realizing An Ultra-Low Noise Zif Zero-If Receiver. The Iq Signal Obtained After Mixing Is Output To The Codec Codec And Collected By The Mcu. The Dsp Algorithm In The Mcu Completes The Demodulation And Display Of The Signal. Sdr Radio Dsp Digital Demodulation Shortwave Fm Mw Ssb Cw Ham Radio Receiver. It Is A Dsp Digital Demodulation Radio Based On Sdr Software-Defined Radio Architecture. It Has 192khz Width Spectrogram And Waterfall Display Capabilities, And Cooperates With 16bit Sampling To Realize A Highly Dynamic Receiver With Cw, Am, Ssb, And Fm Demodulation Functions. The Whole Machine Adopts An All-Aluminum Alloy Cnc And Is Equipped With A 4.3-Inch 800x480 Resolution High-Brightness Ips Lcd Display, While Maintaining A Small And Compact Body. Take It Outdoors Immediately And Enjoy The Natural Scenery And Listening Pleasure Anytime And Anywhere ! Description: Receiver Parameters 1. Rf Preamplifier Gain: Fixed 20db 2.Circuit Type: Zero Intermediate Frequency Zif 3. Sideband Suppression: 50db Show List Of Controls Encoder Optional 1.Channel Selection: 1-99 2. Frequency Setting: 100k - 149mhz, Minimum Step 1hz 3. Speaker Volume (Spk): 0~35db, 1db Step 4. Headphone Volume (Ear): 0~35db, 1db Step 5. Modulation: Cw, Lsb, Usb, Am, Wfm, (Fm Stereo), I/Q 6. Agc Settings: Off, Slow, Mid, Fast 7. Reference Level (Ref): -99~99db, 1db Step 8. Backlight Brightness (Lcd): 1%~99% 9. If Gain: -12~67db, 1db Step 10. Spectrum Style Settings: Green Fill, Green Line, Blue Fill, White Line 11. Spectrum Bandwidth Settings: Rf Spectrum (192khz, 128khz, 64khz) And Audio Spectrum (64khz) 12. Waterfall Locale: Waterfall Or Waveform (X1 / X8 / X64 Amplitude) Five Items The Encoder Cannot Select A.Battery Power Display B. Date And Time Settings C. Radio Information Display: Ability To Preset Radio Station Name D. Current Spectrum Bandwidth Display E. (Power) Antenna Port Input Power Display Material: ABS+stainless steel colour: As shown Package Contents: 1 x SDR Radio 1 x Data Cable 1 x Antenna 1 x English Manual Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.