Pre-alignment was not necessary for me. Connecting, receiver so set that pulls and finished the antenna current.
The antenna is quite small, however, the plastic surface for a thirty-three euro expensive antenna appears quite cheap.
Luckily, you can Kathrein with a size of A5 rather well
"Hide".
Warning: Anyone who lives near a transmission tower should rather establish a passive antenna Kathrein (as well as other active antennas) get such interference because the signal is too strong.
This has happened a friend of mine, the manual also warns of the antenna.
A good antenna alone makes it the way also not alone out, you should also invest in accordance with a good receiver.
The Kathrein connected to my Laptotreceiver receives me (remoteness Bonn) 18 programs, on my Siemens television receiver every 26th
At Last but not least: The antenna is not sent by Amazon, the shipping costs are much too high with nine euros for a very small and lightweight package.