Three Radio Controller Interface

• 2BSIQ - Two Band Synchronized QSOs Mode
• Switches headphones, microphone, CW keyer and PTT 
• Uses relays for headphones, cw paddle and microphone switching
• 3 modes PTT-interlocks (Single-op - Multi-Single - Multi-Multi)
• Quick and easy programming

DL-3R is a 2 or 3 Radio interface - controller
Not only perfect SO2R (SO3R) interface for Contesting, but also great controller for a casual operator allowing easy and quick radio switching.