- 3 -
When we add a capacity hat, the inductor (resonator) can be reduced, which lowers the resistance.
As stated above, a reduction in the resonator resistance is reflected in the feedpoint resistance. In
this case, the base impedance of the antenna drops to about 16-22 Ω when you increase the
efficiency of the antenna with Hot Rodz®.
If the base impedance is reduced from 50 Ω to 20 Ω when the antenna's radiation resistance is really
3 Ω, then the loss is reduced from 47 Ω to just 17 Ω and the efficiency improves from 6% to 15%
(3 Ω / 20 Ω). This improved efficiency more than doubles the RF power radiating from your
antenna. Any matching problems at the feedpoint will be handled by your rig's antenna matcher or
with the DX Engineering
DXE-MM-1
Dual Impedance Transformer.
Installation and Maintenance
While DX Engineering Hot Rodz® make it easy to modify Hustler mobile resonators and whips, we
suggest you read these instruction carefully before you begin the process.
Safety Considerations
Hot Rodz® create additional aerodynamic drag. While Hot Rodz® have been made as
aerodynamic as possible, additional guying of your antenna may be necessary.
Install the plastic caps over the ends of all exposed rod ends. The ends may be sharp and can
cause injury.
Keep the end of the rods inside the body lines of your vehicle.
High voltage exists on your antenna and the Hot Rodz®. Transmit only when people are a
safe distance away.
Be aware that Hot Rodz® makes your antenna diameter larger. Use caution when driving
near pedestrians, and in crowded or confined areas.
Assembling the Antenna
1.
Refer to
Table 2
to select the resonator and stainless steel rods for the desired frequency.
2.
Mount the patented Hot Rodz® Hub to the Hustler resonator flush with the flat area below the
whip mounting threads as shown in
Figure 1
.
3.
If you are not using the whip, then use the larger plastic cap over the end of the threads.
4.
Place the correct number of the smaller caps over one end of the stainless steel rods you have
chosen to use.
5.
Insert the stainless steel rods into the hub in the configuration shown in
Table 2
.
