The commissioning of the ITER-Like ICRF Antenna (ILA) on JET plasmas from May 2008 to April 2009 in various conditions (33, 42 and 47MHz, L- and H-mode, antenna strap-plasma separatrix distances of ~9 to 17cm) has provided relevant information for future antenna design and operation. The maximum power density achieved was 6.2MW/m2 in L-mode with strap to plasma separatrix distance of ~9-10cm at 42MHz on the lower half of the ILA extrapolating to 8MW/m2 if the full generator power had been available. Efficient (trip-free operation) ELM tolerance was obtained both at 33 and 42MHz on a large range of ELMs with strap voltages up to 42kV and a maximum power density of 4.1MW/m2. The paper reviews these achievements as well as remaining issues.