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Choose between a single-reed or a double-reed call. Select between an acrylic, wooden, or polycarbonate call. Consider volume. Try  making a call.

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Typically calls are made with either one reed or two reeds and a wooden, acrylic, or polycarbonate sound chamber that amplifies the sound.   A single-reed call has a larger range, both in terms of volume and sound control, but is a little more difficult to master in terms of technique. This would be a good option for the advanced (or at least experienced) caller. Double reed calls are quieter but easier to control and easier to vary in terms of sound. A double reed will require more breath, but is generally a better option for the beginner. Making accurate sounds is more important than volume and double-reeds have a reliable "sweet spot" that sounds very realistic. While the notable differences are few between the different materials that make up the sound chamber, knowing the subtleties will provide you with a good guide if you're planning on buying and a smart use when you plan to use them.  Acrylic calls will make a loud, sharp noise. These are useful for open-water and long distances. They're also very easy to take care of, extremely durable, and will stay clean in the elements, but are the most expensive option by far. Wooden calls make a soft and mellow tone that some say is more accurate. They're inexpensive, but more difficult to take care of, though they will last for a long time if you do. Polycarbonate calls are generally the same price as wooden calls and offer a sound somewhere in between the sharpness of the acrylic call and the softer tone of the wood. They're water-resistant and reliable. If you're going to be hunting on open water, or it's particularly windy out, you're going to need a call with a lot of volume. If you're going to hunt from a blind, or with decoys the ducks come right up to, it would be better to have a softer call that offered more finesse in terms of sounds. When you know where you're going to hunt, you can pick a smart call for the job. Talk to local hunters and sporting goods dealers to check out available calls and learn about popular varieties. Detailed instruction guides are available to guide you through the process of carving a wooden duck call, fitting it with reeds, and tuning it to the proper specifications. This allows you the option of customizing your call and designing it creatively. Cheap do-it-yourself kits are also available, but these are often low quality.