The available frequencies are:
475 kc
502 kc
1860 kc
3600 kc
Which fall in to the amateur radio bands, but you can also get a custom frequency design if you have something specific in mind. It works just like the full size Magnifying Transmitter, except at a different frequency.
See more info here:
http://www.teslascientific.com/produ...-design-sheet/