GPS & GLONASS Active L1/L2 Antenna, +28dB Gain | Southwest Antennas - High Performance RF and Microwave Antennas & Custom Antenna Manufacturing
Active L1/L2 GPS Antenna, 3.5" - NavtechGPS
Special Topics - GPS (4 of 100) Satellite Transmission Channels L1 and L2 - YouTube
2 Antennas GPS Signal Blocker Anti-Tracking GPS L1 L2 Signal Mini Style GPS Signal Jammer for Car - China Signal Blocker, GPS Signal Blocker | Made-in-China.com