TW TW4040, Instruction Manual

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TM
TransWorld Antennas
TW4040
TM
8 TW4040 Instruction Manual
6 Getting Started
Getting started with your new TW4040 is quick and easy. Follow these steps to
get started using your new antenna right away.
6.1 Tools Needed
A small Phillips screwdriver should be the o n l y
tool needed for use with your TW4040, required
to
open the switching array box for adjusting
tuning (page 12).
Under normal circumstances, after optional initial tuning, no tools should ever be
required for break down, transport, and setup of the TW4040.
6.2 Antenna Setup
1) Choose a location for your antenna. Ideally, the area you choose for your
antenna should be at least 7 meters (about 23 feet) from any metal structure or
other objects that could detune the antenna. However, excellent performance has
been achieved when it is placed in attics, on roofs and balconies, and in close
proximity to trees and other structures.
Danger: The antenna should not be placed anywhere near power lines, as
serious injury or death could occur. And as always, CALL BEFORE YOU DIG to
ensure you know where buried gas, water, sewer, power, and other service lines
are located.
Danger: As with any antenna installation, exposure limits should be
calculated to ensure safe operation. Visit the ARRL website
(http://www.arrl.org/news/rfsafety/) for more information on exposure limits and
calculations.
The antenna
’s coax feed line should be run at a 45-degree angle down from the
structure to the ground to minimize parasitic coupling (see figure on page 11).
Failure to do so will result in higher than expected VSWR readings. Plan for this
extra footprint when choosing a location for your antenna.
2) Install Permanent Mounting Assembly. The supplied Permanent Mounting
Assembly consists of insulator rod attached to an aluminum tube using stainless
steel hardware. The assembly can be installed with or without the use of