Whether or not and based on which level and amount of RF radiation from a transmitting device will endangering the health, so far is still under debate and in question with different interest groups.

Quietvox radio receivers, used by group members, work like any FM radio and are entirely safe to use. Since the invention of broadcast radio no serious scientific research has mentioned health hazard by listening to the radio.

The risk for the guide is related to the output power. Quietvox transmitters, used by tour guides, utilize 0.01 Watt of power, which is the lowest standard in the industry. This compares very favorably with cellular/mobile phones which use 0.60 Watts of power – in other words, 60 times more than Quietvox TX

The most common used transmitter is a cell phone. The output power is 0,6 Watt. This is 60 times more than Quietvox TX

Example: output power is converted to heat. If you stay on a cell phone you will realize that the phone warms up. Quietvox TX never warms up at any time no matter how long you transmit because the output power is too low. Additionally is our system voice activated, only when the guide talks the transmitter works. If the guide stops talking the transmitter automatically shuts down.

Many other Tour Guide Systems are using extreme high power to overcome the problem of interferences. Quietvox instead is using a channel hopping system which switches to another frequency to preserve a low output power.

Quietvox conforms to EEC Specifications (EN50571.20.2002) and test results are registered with an official independent German test laboratory: PKM Electronic GMbH, Reg No. - DAT/P199/96-01