1、[Large Range And Multiple Interfaces] Transceiver 8 band coverage of 80m, 60m, 40m, 30m, 20m, 17m, 15m, 10m. With CAT, PTT OUT, MIC, KEY, K head hand microphone interface. 2、[High Efficiency] 80m, 60m, 40m, 30m, 20m efficiency of SDR transceiver is higher than 85 percent, 17m, 15m efficiency is higher than 80 percent, 10m efficiency is higher than 70 percent. 3、[Premium Circuit Design] This HF SSB QRP HF transceiver has premium PCB wiring design in accordance with HF circuit design principles to ensure stable performance. 4、[High Frequency] The radio transceiver can achieve 3‑5W power in all 8 bands, and the TO 220 package pads are reserved for upgrading, making it easy to install and more convenient to use. 5、[Anti Interference] High accuracy for KDS brand for TCXO, frequency accuracy better than 1PPM, frequency stability better than 0.5PPM. Independent core board and RF board to avoid its own signal interference. 6、[Professional] LPF part all use C0G NP0 capacitor, use original magnetic hold relay and LM4562 or LM833 op amp chip, built in speaker with cavity and BNC antenna interface. Item Type: SDR Transceiver Material: Aluminium Alloy Size: Approx. 124 x 87 x 37mm / 4.88 x 3.43 x 1.46in Support Full Mode: USB, LSB, CW, AM, FM (SSB Mode Has Stable Reception, But Poor Transmission. AM and Fm Modes Are Free and Have Poor Results) Filter DSP Filter: 4000, 2500, 1700, 500, 200, 100, 50hz Passband Function DSP Function: 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 Sound) -33dbc, Receive: Better Than -50dbc Support Multi Band Support, Continuously Adjustable 10m/32.8ft in 80m/262.5ft Frequency Range (From 20khz 99mhz, Lossy Performance) Open Source Firmware, Allows Experimentation, Can Add New Features, Can Share Contributions Via Github, Software Complexity: 2000 Lines Of Software Based for Vovox Word Available for Fast Full Control (QSK And Semi QSK Operation) Or RX Auxiliary Switch TX In Digital Mode (No CAT Or PTT Interface Required), Using Fully Digital TX Delay Grade And Software Based SSB Stage Transmitters External Control Of The PTT PA Output: Control of the Phase of the Sill Si5351 (Via Small Frequency Changes At 800kbits/s I2c) and the Amplitude of the pa (Via pwm pa Key Shaping Circuitry) Three Independent Switchable Analog Front End Receiver Attenuators: (0dB, -13dB, -20dB, -33dB, -53dB, -60dB, -73dB) Receiver Noise Floor MDS: -135 DBm at 28MHz (200Hz BW) Receiver Front End Selectivity: Steep -45dB Per Decade Roll Off From Tuning Frequency +/-2 KHz Blocking Dynamic Range: 20kHz Offset 123dB, 2kHz Offset 78dB CW Decoder, Straight, Iambic A, B Keyer VFO A B + RIT and Split, and Corresponding Relay Band Filter Switching Via I2C CAT Support (Using for Kenwood TS 480 Protocol) Built in Polymer Lithium Battery: 4000mAh 8 Band Coverage: 80m/262.5, 60m/196.9ft, 40m/131.2ft, 30m/98.4ft, 20m/65.6ft, 17m/55.8ft, 15m/49.2ft, 10m/32.8ft 1 x SDR Transceiver 1 x Microphone 1 x Instruction Manual 1 x Power Cable