Have 2 bought for use as W-LAN bridge

Unfortunately I have a road between the house and garage which adjoins vast gardens.
At first I had tried a Powerline adapter as it depends on the same power grid.
I can not tell it what it is, maybe it that the power cable has been laid already in the 60s and
of poor quality is ... no clue power to come - not just internet.

Since you can configure the 1750E as a wireless bridge that was the solution to bridge the 25 meters.
Only the existing frequency is passed (2.4Ghz with me) as a repeater and therefore the transmission speed is limited.
Now I'm on Lan on the 1750E and use it as a bridge - now the thing communicated to both frequencies (2.4 & 5 GHz) and transports the data super fast. I use a cell phone that OnePlus one (that can receive frequencies and 5 GHz) and have so mach for fun up & download speed tested. The result was 100% of my line! 160Mbit download and 5 Mbit upload.
It seems to me there's some open upwards.
Oh, as a receiver, I have used a 2nd - which acts as a repeater (2.4 & 5 GHz) and in addition, I use the "receiver" the LAN connection, so am on a switch and have misplaced Verlegekabel within about 60 meters. Here comes over in the far corner yet to 1Gbit. Can now on about 4000 square meters of my music, movies, photos ... etc stream and works perfectly.

What I had found, oddly enough, I had the first run though the original packaging and sealed a reset in two repeaters. As a tip, if the box when setting rum zickt, a reset (Tast think 15 sec. Hold) and you'll be fine.
Regards, catfish