As I mentioned earlier in this chapter, if you want to buy an antenna cheaply, you might have good luck on eBay. I recently tried the terms "RF antenna" and "Wi-Fi antenna" on eBay and found quite a few items for auction, with almost none priced above $25. If you decide to buy your antenna in a more conventional way, you should go to a company with a Web presence that specializes in RF antennas and related equipment. These companies include
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