WiMax equipment provider Aperto Networks has raised $240,000 more in equity, according to a filing with the SEC. It just raised $537,000 at the end of October. Based in Milpitas, Calif., the company is backed by Alliance Ventures, Canaan Partners, GunnAllen Venture Partners, Quicksilver Ventures, Tyco Ventures, Innovacom and Jafco Ventures. It has now raised more than $160 million to date.