I have been looking into getting a phonak covert ear piece for transmitting information. Last one I picked up was about 2 years ago. I remember it being quite expensive for a complete system. Does anyone know any way of converting a standard hearing aid for radio frequency detection? The original had a neck loop which had to be fit into a gimmicked walkie talkie. Are there any simpler methods of transmitting the signal? Please email me if you know of any less complex radio equipment.