The Vivid Unit is a single-board computer with a built-in LCD touch screen. There is an optional module called the "GPSDR," which is an RTL-SDR, upconverter, and GPSDO module that, when combined with the Vivid Unit, creates a handheld, portable SDR.  Last month, we reviewed the Vivid Unit and its "GPSDR" RTL-SDR add-on module on our blog.

Recently, Matt from the Tech Minds YouTube channel has also uploaded a review video of the Vivid Unit and GPSDR. In the video, Matt shows the hardware and demonstrates it in action, receiving various signals, including ADS-B and HF signals. He notes that he gets a good reception on HF even with just a telescopic antenna; however, the built-in speaker is tinny, and better audio is obtained by connecting it to a Bluetooth speaker. Matt also tests rtl_433, confirming that other RTL-SDR software works on the Vivid Unit too.

Matt also notes that you can use the code "TECHMINDS" if ordering from the UUGear site directly, and you'll get 5 Euros off each GPSDR that you order.