Hello Phantom Community
I'm a newbie at the west Edge of Texas.
I've been following this thread.
Just some observations:
The eBay Seller, 5050david, is kind of new but his feed back is 100%.
In the past 90 days he's only sold 3 but the listing does say 75 sold.
There's obviously a few of these extenders out there but not everyone is posting any kind of test results that we would like to see.
I found this video
with the title
DJI Phantom3 Standard range extended by ARGtek antenna (Range 4X 1800M)
from this German Forum
Argtek Antennenbooster für 3 Standard - Drohnen-Forum.de - Quadrocopter, Multicopter und FPV
I'm just as hesitant as many of you are.