4-band coverage 10/15/20/40M 4 Band (modified based on the source program and different from the source program) Using 13.8V power supply, the power can be up to 3-5w in three bands, and the SOT-223 packaging pad required for upgrading is reserved. High launch efficiency, with 40m / 20m efficiency higher than 80% and 15m efficiency higher than 60%. (Note: transmission is prohibited in non 40m / 20m / 15m / 10m band and can only be used for reception) Ultra small volume and weight: 82 x 50 x 20MM (excluding protruding parts), body weight 180g, very suitable for mountaineering. Introduction:This is a HF band QRP SSB / CW transceiver. It is very small and easy to carry outdoors. It uses a 0.96inch OLED LCD screen for easy reading. Built in speaker, support to connect to PC, use FT8, jt65, FT4 and other digital modes, support CW mode, software control, and support CW automatic decoding. Multiple interface - cat, MIC / key, audio (headset supporting Android adaptation). 100V or 250V cog / NPO capacitors are used for LPF. Use Omron magnetic holding relay. Use ne5532 operational amplifier chip. Built in high-quality speakers. BNC antenna interface. Frequency Range: Receiving: 0.5MHz ~ 30MHz (theoretically it can reach the limit of SI5351) Transmission: 1.8~30MHz Working mode: CW, AM, SSB Minimum step: 10Hz Antenna Impedance: 50Ω Operating temperature range: 0℃~+50℃ Power supply voltage: 10.5 ~ 16V DC, the negative pole is grounded. Current consumption: Receive: 100mA@Max Launch: 1A@Max Body size: 50 x 20 x 80mm (W x H x L) (excluding protrusions) Weight: about 180g (main unit only) RF output power: 0.1-5W (SSB/CW) 0.1-5W(AM carrier) @13.8VDC Colour:black Material:ABS+metal Package Contents: 1 x Pocket Radio 1 x cable 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.