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The parabolic reflector system is the combination of a reflector dish, typically between 13" and 36" in diameter, and a microphone. The microphone is positioned in the focal point region of the reflector (the area where all the collected sound is concentrated). Parabolic reflectors, by design, yield a tremendous increase in sensitivity without any added electronic noise. Microphones suitable for use in parabolic reflectors range in price from $300-$1,200, with the more expensive units yielding flatter frequency response, improved signal-to-noise ratios, and higher signal level overload capabilities.  

Listed here are some of the different reflectors manufactured.

1. The Telinga Pro parabolic reflector is a clear, lightweight 22" reflector available in several models that include integral high-quality microphones, or as with the Telinga Universal model, are designed to accept other manufacturers' microphones. All of these models offer excellent rejection to handling noises and can be completely disassembled for easy transport.           
2. The Mineroff Electronics SME-PR-1000 ($375 without microphone) is an 18" epoxy coated aluminum reflector that includes a pistol grip and adjustable microphone mount. It also offers a transparent viewing window at the center of the dish to assist in aiming. This reflector, coupled with an inexpensive microphone, is a perfect starter system for low-budget applications.

For the do-it-yourselfer, one can purchase high quality 24"-36" spun aluminum reflectors that are designed and sold as satellite receiving antennas. These units are perfectly acceptable; however, they are not supplied with a microphone or microphone mounting hardware. One can easily create a mounting system with aluminum bar stock that is readily available from most hardware stores.