Heating with waves in the Ion Cyclotron Range of Frequencies (ICRF) is one of the main methods envisaged for auxiliary heating in ITER and in future reactors. There are several possibilities for heating a Deuterium Tritium (DT) plasma in a reactor. The main scenarios are: fundamental minority heating of deuterium () in a tritium rich plasma (); and second harmonic heating of tritium () in a 50:50 DT plasma. Both these scenarios have been tested during the recent DT campaign in JET [1]. An analysis of the experimental results by comparison with code simulations are presented in this paper. The code used for the simulations is the PION code [2]. This code calculates the ICRF power deposition and the velocity distribution of the resonating ions. Furthermore, the influence of the velocity distribution function on the power deposition is taken into account. A model for redistribution of fast ions during sawtooth crashes [3] has been included in the PION code since the influence of crashes on the neutron profile has been found to be significant [1] during heating. The code is based on simplified models and is therefore relatively fast. Furthermore, all input data to the code are taken directly from the JET data base.