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Mobile Antenna Capacity Hats and Hubs
DX Engineering Hot Rodz™ Antenna Capacity Hats
DX Engineering Hot Rodz™ Antenna Capacity Hat Systems are designed to increase the bandwidth and efficiency of single-band mobile vertical antennas, such as those from Hustler and Pro Am, or on mobile "screwdriver-type" adjustable frequency antennas. These hats can even shorten the height of the antenna by eliminating the need for a whip while maintaining the same or a lower resonant frequency. The DX Engineering Hot Rodz™ antenna capacity hats can also be used on the Hustler 4, 5, and 6-BTV series antennas by experienced antenna experimenters. When an antenna is shortened from its naturally resonant length, the feed point becomes capacitive. To offset the additional capacitance, it is common to add inductance in the form of a loading coil to restore the resonance. However, the additional inductor increases the resistance, which increases the loss in the antenna. DX Engineering Hot Rodz™ Antenna Capacity Hats solve the problem by using a capacity hat--a series of horizontal rods that helps to counter the effects of shortened vertical antennas. DX Engineering Hot Rodz™ Antenna Capacity Hats Systems include: * Precision-machined 6061 T6 hub * Stainless steel set screws * 18 pre-cut stainless steel rods: * 3 sets of 6 in. stainless steel rods * 3 sets of 12 in. stainless steel rods * 3 sets of 24 in. stainless steel rods * 24 plastic safety tips * Aluminum hub Note: Whenever the DX Engineering "Documentation" tab is available, please look at the associated files for additional product information. Want better vertical antenna performance? Try DX Engineering Hot Rodz™ Antenna Capacity Hat Systems!
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$121.99
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$124.99
DX Engineering Hot Rodz™ Capacity Hat Hubs
DX Engineering Hot Rodz™ capacity hat hubs are direct replacement hubs for your DX Engineering Hot Rodz™ antenna capacity hat systems. They feature all-aluminum construction and are available in smooth bore or threaded bore designs to fit your specific project. The hubs include stainless steel rod fastening set screws and a set screw Allen wrench key.
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$32.99
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$35.99