Tram Diamond 40 Make Tram Model Diamond 40 Mic Wiring 1 - Shield3 - Transmit2 - Audio4 - Recieve Tram Diamond 40 Technical Specifications AttributeDetails ManufacturerTRAM ModelDIAMOND 40 Product CategoryTransceiver Mic Wiring Pin 1 – Shield / Ground Pin 2 – Mic Audio Pin 3 – RX Pin 4 – Switch Line
