Good sound but highly susceptible to cell phone signals

With the quality of the buttons, knobs and antenna am very satisfied. The workmanship is good and looks dibasic.
The Empfangsqulität I find also good, as are the power of the speaker.
The buttons are easy to operate and the transmitter and volume control can be adjusted very precisely.

Absolutely annoying - so also 2 star deduction - if a cell phone within 2 meters ringing starts the typical interference whistling in the loudspeaker and that still there too loud!
The radio is in my office at the table, and if my office colleague receives a cell phone call the whistle goes off. That's why I had to turn off the radio.
Today I have a new place in the office wanted to have enough distance to workplaces. It works now. But it would be necessary not have happened if a corresponding shield on board would be. But this is due to the favorable price and therefore bearable.

However, if no place is far enough to place the radio from your phone (for me 2m) will not be happy.

Conclusion:
Free processing: Good
Speaker: Good
Sound quality: Good
Regulators & buttons: Very good
Reception quality: Very good
Interference by cell phones: Very Bad