4-BTV, 5-BTV, 6-BTV Multiband HF - K6RF Home of the Porta Base ...
4-BTV, 5-BTV, 6-BTV Multiband HF - K6RF Home of the Porta Base ...
4-BTV, 5-BTV, 6-BTV Multiband HF - K6RF Home of the Porta Base ...
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• Any <strong>HF</strong> vertical mounted a few to many feet above ground with only a few radials suffers<br />
virtually <strong>the</strong> same ground losses as a ground mounted vertical with a few radials. This<br />
manual shows you how to plan and install ground radials for better antenna performance and<br />
gratifying operational results in almost any situation.<br />
• Height is not a requirement for <strong>HF</strong> Verticals. Unlike horizontally oriented antennas, ground<br />
mounted vertical antennas used for <strong>HF</strong> sky wave communications only require a radial<br />
system for performance. If an <strong>HF</strong> quarter-wave vertical antenna is elevated, <strong>the</strong>n it requires<br />
resonant, quarter wavelength, tuned radials to be efficient and functional. Safer groundmounted<br />
installations can produce results far superior to elevated <strong>HF</strong> verticals with a few<br />
radials.<br />
• For low-angle performance, a horizontal antenna requires height, and if it is directional, may<br />
not be able to be rotated, or it requires a tower and rotator. In comparison, an omnidirectional<br />
<strong>HF</strong> vertical installed with many radials <strong>of</strong>fers an excellent performance-to-cost<br />
value.<br />
Some Brief Words on Ground Mounting, Elevated Mounting, and Radial Wires<br />
Ground Mounting<br />
There are multiple ways to install a Hustler <strong>BTV</strong> antenna. The most efficient way is to ground<br />
mount <strong>the</strong> antenna, keeping clear <strong>of</strong> any metal objects and using a good ground radial system.<br />
Ground mounting your quarter-wave vertical antenna will produce significantly improved long<br />
range results when your installation includes a good ground-level radial wire system. Seven decades<br />
<strong>of</strong> experiments show that ground mounting with many radials is your best choice.<br />
Safety is ano<strong>the</strong>r important consideration when comparing ground mounting to<br />
ro<strong>of</strong>-top or elevated mounting <strong>of</strong> your quarter-wave vertical. The DX<br />
Engineering Tilt <strong>Base</strong> <strong>of</strong>fers a safer and easier ground mounted installation.<br />
One person can walk-up and tilt-down <strong>the</strong> antenna for adjustments without a<br />
ladder. The new, more versatile Tilt <strong>Base</strong> models are also helpful when high<br />
winds are expected. Order <strong>the</strong> Tilt <strong>Base</strong> model DXE-TB-3P for your Hustler<br />
<strong>BTV</strong>.<br />
Elevated Mounting<br />
You may also elevate <strong>the</strong> Hustler <strong>BTV</strong> antenna. However, when elevating <strong>the</strong> antenna <strong>the</strong> radial<br />
system becomes more difficult to deploy in that you need specific length radials that must also be<br />
elevated, running symmetrically away from <strong>the</strong> feedpoint.<br />
In some situations, an elevated or ro<strong>of</strong>-mounted vertical installation is <strong>the</strong> only option. Resonancetuned<br />
radials must do <strong>the</strong> job <strong>of</strong> collecting RF currents. Imagine all <strong>of</strong> <strong>the</strong> quarter-wave resonant<br />
length wires attached to <strong>the</strong> base <strong>of</strong> <strong>the</strong> antenna, spreading radially (away from <strong>the</strong> base <strong>of</strong> <strong>the</strong><br />
vertical in all directions). For best DX performance, <strong>the</strong>se radials should slope down from <strong>the</strong><br />
elevate vertical at a 45 degree angle. You can connect <strong>the</strong> ends <strong>of</strong> <strong>the</strong> long radials to support poles<br />
or trees. Use <strong>the</strong> same care as you would for a dipole antenna, keeping <strong>the</strong> ends insulated and clear<br />
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