The Field Marshall can track any specific frequency within several bands. The Field Marshall offers very high sensitivity, loud sound (with speakers top and bottom), a solid ultra-compact case design featuring a “Quick-Release” handle, improved LED front lighting of the control panel for night tracking, and the latest generation of Marshall’s exclusive collapsible yagi antenna now with cable-free operation. Also, exclusive to the digital Field Marshall is the addition of polyphase filters, our new noise floor reduction technology that reduces the background noise while increasing the effective range and tracking ease. FM5000: $1795.00 Available frequencies: 5 band 215-219 or 233-237 More information about the FM5000 Gulf receiver. When you hold a Marshall Radio tracking receiver, you immediately feel the difference. Everything about the design, its look and feel represents the highest quality. Marshall receivers give you the best range and can take heavy use without failing you. They are now used by thousands of happy customers throughout the Gulf. The Digital Stealth and Field Marshall has been totally redesigned with a smaller profile, a new polyphase noise floor reduction feature and a Quick-Release removable handle. This newest receiver design now has a smaller version of our patent-pending spring-loaded, collapsible three-element yagi antenna that can be deployed to full size in seconds when you need to get a signal. The compact design is the ultimate blend of convenience and high-end performance. All Marshall receiver electronics are protected inside extra rugged cases machined from solid blocks of aircraft aluminum that gives the greatest strength to weight ratio. All have backlit control panels for night time use. All have both headphone and AC adapter jacks. The center-of-gravity is focused at the top of the handle so that the unit feels light, pressure free and perfectly balanced. The result is the feeling that your new receiver is much lighter to hold. It also stays balanced in the hand without requiring a tight grip as you track a signal. Yet when you remove the “quick-release” handle, to hold the receiver by the body, its new narrower width and rounded corners feel smooth and secure in the hand. It’s a pleasure to own and use.