Austin 500C3B - The Triune Model 500C3B utilizes all the design techniques and operational characteristics of the 500C, and in addition extends the technology by adding the 800/900 MHz, SMR/Cellular bands to its operation.
The 800/900 MHz radiator operates as a ground independent 1/2 wave. This patented concept incorporates a method of enabling a resonant cavity to resonate at a second frequency which is not 3rd order harmonically related to its fundamental resonance making this antenna unique amoung current multiband antenna designs.
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