SimPhonics provides several flavors of SINCGARS radios for DIS/HLA communications. You can use a simple front panel combined with a serial port equipped PC, or a complete stand-alone SINCGARS simulated radio ready to plug into the network.
Connect Live Radios to DIS/HLA Networks
Connecting live radios to the SMx system is simple since the I/O subsystem gives you the flexibility you need for connecting to electrical signals such as PTT. SimPhonics has delivered several DIS-TO-LIVE systems using this same technology.