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Expectations-You don't know what you don't know. By Dave Holmgren.

Last month we took a look at the trade-offs the designer should consider when...

Amateur radio enthusiast Chuck Deiterich explains how pilots can use the Automatic Packet Reporting System (APRS) to track their flights and stay in touch with loved ones for a modest investment.

Easy to build, easy to fly...and affordable too. No wonder the Fly Baby remains popular decades after the prototype debuted.