GNSS RTK GPS Survey Antenna TNC-J Base Station UHF Radio Amplifier QT450ETH for South Sokkia Trimble Hi-target CHCNAV 410-470MHz WholesaleBuy Directly From Shop1102119358 Store. Enjoy ✓Free Shipping Worldwide! ✓90 Days Buyer Protection. ✓Easy Return. ✓Money Back Guarantee.