Complete wireless system for Akai EWI: AKG GB40/SR40 Complete wireless system for Akai EWI: AKG GB40/SR40
If you have an Akai EWI wind synth or anything else with a jack socket the GB40 bug is probably the the easiest way to make it wireless.

The GB40 transmits to the SR40 single channel receiver. When ordering you can choose from 7 different frequencies to ensure you do not clash with other wireless systems in the band.