This report discusses propagation loss studies and measurements made on 433 MHz and 2.45 GHz. The 2.45 GHz wideband is especially interesting since it is the frequency band used by bluetooth applications. Knowledge about indoor propagation is important to be able to plan a wireless indoor network. Measurements have been made both with the transmitter and the receiver on the same floor and between floors. Adjustments of coefficients for special chosen models have been done, the models show good accuracy, just a few dB in average error.