Can transmit signals and record received signals. Can scan and store signals. Can receive 4GLTE signals. Can be used as a simple spectrum analyzer. Compatible with for Windows, for MAC, for Linux, for Raspberry Pi, for Android, and for old Apple mobile phone systems. Parameters Frequency:1Mhz-6Ghz Bandwidth:20Mhz Accuracy:8bitADC/DAC Rate:20Mbps Maximum transmit power:10dBm Maximum receive power:-5dBm (Note: Exceeding this value will burn the board) 64QAM transmit EVM:1.5% Complex sampling bandwidth:20Mhz with circuit protection MAX2837 chip The product appearance and printed words may vary depending on the batch, but this does not affect use. Colour:Black Material:PCB Package Contents: 5 x Board 5 x USB 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.