The - is an extremely software defined which is based on - ( ) USB receiver dongles that have the 2832U chip in them. By using custom software drivers, a commonly used 2832U can then be turned into a sophisticated with features that would have until recently cost in to thousands of . Of course, the performance of these dongles will not match a dedicated , but they perform extremely well for the price, and almost all hobbyist projects that can be done with or can also be done with the - . Feature - ColorAssorted Color - Material: plastic - Size: 7 x 4 x 3.1cm - Listening to unencrypted Police/Ambulance/Fire/EMS conversations. - Listening to VHF amateur . ham packets. Watching analogue broadcast TV. - Using - on your device as a portable . Receiving and them. - Scanning for cordless phones and baby monitors. and receiving meteorological launched weather balloon data. your own self launched balloon for payload recovery. - digital amateur ham such as CW/ / / . Package list: 1 x Antenna Set