So guys my argtek antenna came actually very fast from Taiwan to Cyprus. The estimated delivery was 1-2 months. But in 12 days time i got it. I opened the remote today, and struggled a bit to fit the antenna, hot glued it and closed it. Usually there are 2 places i fly. In my neighborhood, where there are tons of wifi's and at another open area with the minimum interference possible. In the first location i usually get around 350m. Today i pushed it at 803m with the new mod. That more than double. I'm quite impressed with the quality of this product. Looks and feels very solid and it does actually works. I'm flying tomorrow to the other location where i usually get 700m and i will post the updates here. I'm hoping the weather will be good tomorrow with no winds.