Marvelous thing

I can only share my personal insights me ... Believe it or not.
If the speakers or even 3 meters away stands the transmission is disrupted. Thinks: dropouts.
Unobstructed view must be available everywhere.
Even a passing between the transmitter and receiver "interrupts" the transmission.
Woe to the transmitter is not permanently connected to a power source.
The lousy Inside battery immediately (soon, soon - about 1 hour) empty.
Then you have to - again and again - and again - Synchronize the transmitter to the receiver.
If someone bothers micht - ok. Then he does what he should.
Remember, the part is tiny!