QRV Communications manufactures and sells cards which allow an Asterisk PBX system using the app_rpt application to be connected to FM land mobile two way radio repeaters and half duplex base station radios. We currently offer two types of radio interface cards. The PCI Quad Radio Interface, and the Analog Radio Interface.

The PCI Quad Radio Interface is the 4 port PCI radio interface card designed to work with the app_rpt application included in the open source Asterisk PBX. This card has 4 independent channels and can control a combination of 4 repeaters or 4 base stations concurrently and simultaneously. Each channel is has a CTCSS encoder/decoder, level adjustment pots, and an Audio In/Audio Out/COR/PTT interface suitable for interface to your radio system.