Request for Information, and Equipment

[robots-omgh8u.livejournal.com]

I'm trying to track down some advanced communications equipment, preferably something above my own world's tech level. It also needs to be suitable for use by a small team during infiltration, and highly secure. While I'm aware of the comm rings, and they are functional, they are not a suitable answer to my requirements. That's why I'm putting out this request. If any of you are capable of helping me with this either through information, or by building the units yourself, I would appreciate it if you would contact me.