Used 6 cavity 450-470MHz 50w duplexer, with N connectors. Made by Celwave in the US for Motorola. Came inside a GR300 repeater I bought for parts. Would be great for a GMRS repeater, or part 90 service. Was tuned by Motorola for 464.5/469.5MHz. $100 or best offer via paypal, I pay the USPS shipping.