The CX300 is no longer manufactured.

The CX300 handset extender for the MSAT-G2 satellite radio system. Extend the MSAT-G2 handset up to 3,000 feet on standard CAT5E cable. The new CX300 interface enables the handset and MSAT-G2 radio to be separated by up to 3000 feet utilizing standard CAT-5/5E network cable.  Installation is as easy as plugging both the handset and radio into the CX300 modules and connecting a CAT-5/5E cable run between the two CX300 modules. No configuration or adjustments are necessary to get your MSAT-G2 up and operational. Everything you need to get both ends extended are included with the kit, all you provide is a CAT-5/5E cable run between the two units.