Cheap And Discounts TX230-XP-200 230MHz SMA-J interface 50 Ohm impedance less than 1.5 SWR 4.0dBi gain high-quality sucker antenna Wholesale. Buy Directly From Merchant Wang Wang IOT Store. Enjoy ✓Free Shipping Worldwide! ✓90 Days Buyer Protection. ✓Easy Return. ✓Money Back Guarantee.