These ham radio bands or frequency allocations are open to radio hams around the world to use although the actual ham radio allocations do vary slightly from country to country and region to region. However a broad view of the ham radio band allocations can be given, and this is accompanied below with an overview of the properties of the different allocations for radio amateurs. In the HF portion of the radio spectrum, there is a total of nine different bands that are allocated to ham radio around the globe. These bands are generally the same world-wide although there are some variations dependent upon the country or region dependent upon the actual amateur radio band in question. A summary of the different bands is given below.