USB Dongle ESD - ADS-B 1PPM SMA F Digital Low Noise Stick. RTL- receiver USB antenna set USB Dongle ESD Protection RTL- ADS-B 1PPM SMA F. - TXCO: 1PPM. This device is a radio turner antenna set. It has improved PCB design, a USB noise choke ring, improved ESD protection and front circuit for lower noise, less and wideband use.
eBay