GPS receivers themselves don't emit any significant radiation. They are designed to receive signals from GPS satellites. However, the GPS satellites do emit radio waves, which are a form of electromagnetic radiation.

Here's a breakdown:

* GPS satellites: These transmit radio signals on specific frequencies (L1 and L2 bands). These signals are relatively low-power and are designed to be received by ground-based GPS receivers.

* GPS receivers: These devices are designed to receive the radio signals from the satellites and process them to determine location. They don't emit any significant radiation themselves.

Radiation levels from GPS satellites:

The radiation levels from GPS satellites are very low and well below levels considered harmful to human health. They are comparable to the radiation emitted by everyday devices like cell phones and Wi-Fi routers.

Safety concerns:

While GPS satellites do emit radio waves, there is no scientific evidence to suggest that these levels pose any health risks. The radiation levels are extremely low and are easily absorbed by the body.

In summary:

* GPS receivers do not emit radiation.

* GPS satellites emit low-power radio waves, which are a form of electromagnetic radiation.

* The radiation levels from GPS satellites are considered safe and do not pose any health risks.