Australian broadcast company Seven Network Limited has lifted the lid on its plans to build a trial WiMAX network in Perth via its new subsidiary, Vivid Wireless, ZDNet Australia reports. The network infrastructure will be constructed by fellow Seven subsidiary Unwired, using equipment provided by Chinese vendor Huawei at approximately 150 base stations around Perth and will be operational around March 2010. It is expected that commercial services will be available to the entire Perth metropolitan area at launch, with further expansion expected after the service is introduced. Vivid Wireless says it expects the network to offer average download speeds of 4Mbps, while peaks in excess of 20Mbps will be possible. The new company has set aside AUD50 million (USD41.9 million) for the trial project, which includes funds to allow the venture to reach a financial break-even point.