Feature: 1. 8 BAND COVERAGE: Mobile transceiver is designed for 8 band coverage, 80m, 60m, 40m, 30m, 20m, 17m, 15m, 10m. Rich interface, CAT , PTT OUT , MIC , KEY , K head hand microphone. 2. HIGH LAUNCH EFFICIENCY: Radio transceiver transmitting efficiency, 80m 60m 40m 30m 20m efficiency higher than 85%, 17m 15m efficiency higher than 80%, 10m efficiency higher than 70%. TO 220 package pads. 3. HIGH PERFORMANCE: 8 band radio transceiver is designed to meet the principles of high frequency circuit design and PCB wiring to ensure excellent performance. Up to 3-5W power in 8 bands. 4. FREQUENCY STABILITY: QRP transceiver has separate core and RF boards to avoid its own signal interference. High accuracy for KDS brand for TCXO with frequency accuracy better than 1PPM and frequency stability better than 0.5PPM. 5. PROFESSIONAL: LPF part all use 100V C0G NP0 capacitors, using original genuine magnetic hold relay, LM4562 or LM833 op amp chip, built in speaker with cavity, BNC antenna interface. Specification: Item Type: Mobile Transceiver Material: Aluminium Alloy Support Full Mode: USB, LSB, CW, AM, FM (SSB Mode Has Good 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 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 External Control Of The PTT PA Output Using Delay Stage And Software Based SSB Stage Transmitters: 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 -45 DB/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) 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. Package List: 1 x Mobile Transceiver1 x Microphone1 x Instruction Book