VGA Extenders & Baluns. For distributing video to monitors up to 300Mtrs away over an RJ45-RJ45 patch lead. VGA Extender Baluns are a great way to provide Cable connections for VGA Signals over longer distances. This is achieved using Cat5e or Cat6 data cables and generally long means over 20m. They support lengths up to 300m and carry both video and audio signals.