Operation is very simple. Batteries, plug in and turn on pure or hang on the power to the audio device. Then quickly select a frequency and off you go. To use the machine switch out must be pressed the appropriate button for a few seconds, then retained even the batteries (you had in a week of very intense use change towards the end once). You can save three frequencies and call them up quickly with three pushbuttons.
In the car, the transmitter has worked wonderfully. When the frequency was a little busier, this has been felt only by background noise and you could easily switch to a naheglegene neighboring frequency. In the House of the transmitter has powered from a central location off the stereo and the shower radio.
My guess why all this has worked so well, has been confirmed for a little test. I have from the beginning used an extension cord so I could tuck the player comfortable in the car. Now I wear the transmitter on one side of the house to the attic and positioned my radio one floor below on the other side of the house. Without extension cables came down to only noise, with an extension cable, the sound was wonderful. The transmitter uses the jack cable so apparently as an antenna. An extension improves here clearly the transmission power.
With extension cable and correct operation (correct off) the unit at the price is so absolutely unbeatable. I would highly recommend bedinungslos.