8 Band Radio Transceiver LCD SDR Full Mode HF SSB QRP Transceiver with BNC Antenna Connector No Power Supply Item Type: Radio Transceiver Size: Approx. 83 x 38 x 124mm / 3.3 x 1.5 x 4.9in (excluding protruding parts) Support All Modes: USB, LSB, CW, AM, FM (SSB mode has good reception effect, but poor transmission effect. AM and FM modes are free, and the effect is not good) DSP Filter: 4000, 2500, 1700, 500, 200, 100, 50hz passband DSP Functions: Automatic Gain Control (AGC), Noise Reduction (NR), Xmit Voice Trigger (VOX), RX Attenuator (ATT), TX Noise Gate, TX unit control, volume control, dbm/s meter. Sidebar Carrier Suppression SSSSB Transmit: Better Than -45dbc, imd3 (dual Tone) -33dbc, Receive: Better than -50dbc Support multi-band support, continuously adjustable 10m within 80m frequency range (from 20khz to 99mhz, loss performance) Software Complexity: 2000 lines of software-based Vovox code can be used for fast full control (QSK and half QSK operation) or RX auxiliary switch TX in digital mode (no cat or PTT interface required), using fully digital TX delay stage and based on The software SSB class transmitter externally controls the PTT/PA output, controlling the phase of the sill si5351 (by small frequency changes i2c at 800kbits/s) and the amplitude of the pa (by the pwm pa key shaping circuit) Software Based All Digital SDR Receiver Stage (Optional): The I/Q (complex) signal is sampled from the quadrature sampling detector digital mixer, and the 90 degree phase shift is mathematically performed in software by adding Atten sideband Receiver Noise Floor MDS: -135dbm at 28mhz (200hz bw) Receiver Receiver Front End Selectivity: +/-2khz Steep 45db/decade Tune Frequency Rollover Blocking Blocking Dynamic Range: 123db at 20khz offset, 78db at 2khz offset Battery Model: 606090-3Lion (shipped without battery) Specification:11.1V(12.6V)/4000mAh Size:93*60*18mm/3.7*2.4*0.7in