We purchased a Telex / RTS dual channels system about 15 years ago, it's been extraordinarily reliable and very convenient in use. 2 channels over 3 pin audio cable. The belt packs are expensive, but very durable. Only issue we've found is that the headset connection is reversed in it's wiring from Clear-Com typical, as well as being a male connector on the headset cable, vs. female with CC, thus adapters are required if you want to use headsets from a CC system.
The RTS is very common in the TV world, as the belt packs are easily configurable for a lot of different functions.
Highly recommended
http://www.rtstw.com/product.php?id=9000673821
Steve Bailey
Brooklyn College
The RTS is very common in the TV world, as the belt packs are easily configurable for a lot of different functions.
Highly recommended
http://www.rtstw.com/product.php?id=9000673821
Steve Bailey
Brooklyn College