Are any BPL systems better at preventing interference?
Motorola’s system doesn’t use BPL on medium voltage overhead lines, but instead uses 802.11 wireless between nodes. The path from a node into the home is via BPL over low voltage lines (120/220VAC). The lines into homes in the US are usually twisted (much like copper pairs used by phone lines, T1s, and DSL) and are much better suited for higher bandwidths. Motorola also included component based filters to filter out Amateur Radio band frequencies from their system. Most if not all manufacturers use digital signal processing filters which are based in software and not nearly as effective. It should be noted that the ARRL has a live Motorola BPL system operating at their Newington, CT headquarters. The system hasn’t interfered with receivers, nor has the BPL system suffered from ingress interference from ARRL’s several 1.5 kW transmitters operating simultaneously on site. As of April 2007, Motorola has suspended Internet access BPL and is focusing on multiple dwelling unit applications.
Related Questions
- Aren interference problems with BPL a thing of the past as first generation systems had problems, but the second generation systems today have fixed the interference problems?
- Does the safeZone wireless system require a radio licence or cause interference with out wireless systems?
- Are any BPL systems better at preventing interference?
