Portable Radio Transceiver 3.2in LCD Touch Screen High Sensitivity 1MHz‑6GHz SDR Transceiver with Speaker Item Type: Portable Radio Transceiver Material: ABS Transmit Power: 5-15dBm(10MHz-2150MHz), 13-15dBm(2150-2750MHz), 0-5dBm(2750-4000MHz), -10-0dBm(4000-6000MHz) RF Bandwidth: 20MHz Sampling Rate: 2Msps-20Msps Power Supply Transmission Interface: USB2.0 (external power supply) Received Power: -5dBm Clock Accuracy: 0.1-0.5pp Working Frequency Band: 1MHz-6GHz Duplex Mode: Half duplex transceiver Main Chip: Processor: LPC43xxARM Cortex M4 Complex Programmable Logic Device: CPLD CoolRunner II Wireless RF Transceiver: MAX2837(2.3-2.7GHztransceiver) Mixer RFFC5072 (30MHz-6GHz) Application: Radio communication technology research, information security technology research, for ZigBee, WiFi, for LTE, for ADS B, for DVB, etc. Wireless Communication Physical Layer Security Protection: Key generation, identity authentication, anti interference, source, channel codec, modulation and demodulation, source mechanism based on RSSI wireless application system and CSI. Channel encoding and decoding, modulation and demodulation spread spectrum, channel simulation. After H2 PLUS Update: 1. LCD display power, cancel LED display power, and further optimize the power consumption when the battery is powered; 2. Built in microphone, external microphone, switch, 3. Automatic switching between built in speakers and external speakers. When no external speakers are connected, the built in speakers play sound. When connecting an external speaker, the built-in speaker automatically switches to the external speaker to play sound 4. The knob is changed e a 360 degree rotation knob: Turn the red toggle switch on the right to the "on" position, and press the middle button of the knob to enter the function interface. Add it to your software defined radio and leave your laptop behind! Added LCD touch screen, navigation controls, headphone jack, real time clock, micro storage card (excluded) slot. Just add a USB battery and explore the radio spectrum anywhere, anytime. This firmware is for your fast ARM processor. No computer required (except firmware reprogramming)