I'm gonna assume the futurehood symbol in the center of the coverage is the tower, I'm about 700m from the end of the coverage area, and about 1.7km from that symbol, I'll drive there over the weekend to confirm if there is actually a tower at that specific point...
but with that said. 1.7km get's me 2 bars of signal without an outdoor antenna, just those 2 little standard antennas on an old B593, got 25Mbps during the initial testing for the 1st couple of days, yesterdays tests were between 14Mbps and 20Mbps, tested between 16:00 and 22:00, hope that helps
side note: I pick up LTE better than 3G, put it on 3G just out of curiosity and got 1 bar, and speeds between ranging between 2Mbps and 4Mbps
Whats the latency like? Ya testing in pick hours wil probably give you the worst results and those are still faster then any adsl for that price range.
I think your signal should improve with the external antenna?