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TransWorld Antennas TW8080 Instruction Manual

The adventurer monobander
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TW8080
™
™
The Adventurer Monobander
TransWorld Antennas
INSTRUCTION MANUAL

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Summary of Contents for TransWorld Antennas TW8080

  • Page 1 TW8080 ™ ™ The Adventurer Monobander TransWorld Antennas INSTRUCTION MANUAL...

  • Page 2: Table Of Contents

    8 Contact Information Due to continual product improvements, the information in this manual is subject to change any time without notice. TransWorld Antennas will be held free from liability, any problems arising from the use of this manual or the products described herein.

  • Page 3: Limited Warranty

    TransWorld Antennas will not be held liable, under any circumstances, for damages resulting from the use of any TransWorld Antennas product. TransWorld Antennas reserves the right to make changes to this product, in part or in whole, at any time, in form, function, or manufacture, without obligation to install or incur any costs relating to the installation of modified parts onto existing product.

  • Page 4: Important Safety Information

    TW8080 TransWorld Antennas 2 Important Safety Information THE INSTALLATION OF THIS PRODUCT NEAR POWER LINES IS DANGEROUS. FOLLOW THE ENCLOSED DIRECTIONS. 1. If you are installing an antenna for the first time, for your own safety, seek PROFESSIONAL ASSISTANCE. Your dealer can explain which mounting method to use for the size and type antenna you are about to install.

  • Page 5: Specifications

    The TW8080 is a center fed vertical dipole antenna with a very low radiation take-off angle (around 27 degrees above horizontal), allowing for very long skips using low power on 80 meters. The TW8080 is a ground-mounted omni- directional antenna, requiring no ground radials, tower, or rotor.

  • Page 6: Vswr Performance

    TW8080 TransWorld Antennas 3 Specifications (cont.) Antenna (cont.) Band 2 : 1 Band Width Typical minimum VSWR 50 kHz 1.1 : 1 Directionality: Omni directional Vertical radiation angle: 27° Band selection: monoband only 3.3 VSWR Performance The plot below represents the VSWR performance of the antenna under the test circumstances noted at the bottom of this page.

  • Page 7: Unpacking

    TW8080 TransWorld Antennas 4 Unpacking Here’s what you should find in your shipping box: • Travel Bag containing the four main pieces of the antenna structure: o Top section o Middle section o Bottom section o Permanent mounting assembly • Also included is:...

  • Page 8: The Components Of Your Antenna

    TW8080 TransWorld Antennas 5 The Components of your Antenna The structure of your antenna has been built in three pieces, top, middle, bottom. The top and bottom pieces fold up for quick and easy travel. Fold-up and assembly of the three main structure pieces is achieved using pre-installed clamp knobs.

  • Page 9: Getting Started

    TW8080 TransWorld Antennas 6 Getting Started Getting started with your new TW8080 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 only tool ever needed for use with your TW8080, required to open the switching array box for adjusting tuning (page 12).
  • Page 10 TW8080 TransWorld Antennas concrete. Though concrete will provide a more secure, permanent base for your antenna, it will be difficult to remove or re-position later. The assembly should be inserted about 12-24” into the ground, exposing 24-36” of the assembly above ground.
  • Page 11 TW8080 TransWorld Antennas Finally, fold the arms of the top and bottom sections out as shown in step 3. The arms should be folded out completely horizontal. Firmly tighten all four clamp knobs to ensure that the top arms do not rotate downward over time.

  • Page 12: Connections

    Coax cable. Connect your coax cable to your radio and to the SO-239 on the TW8080’s loading array box. It is highly recommended to use at least 65 feet of coax on your TW8080. For best performance, use a high quality RG-8 or RG-8X coax cable.
  • Page 13 TW8080 TransWorld Antennas Loading Array Operation. The loading array on the TW8080 consists of two boxes (labeled “Side A” and “Side B”, below). The cover can be removed off of each, and the coils inside tuned. Each half of the antenna (top half and bottom half) is tuned by seven series-connected coils.
  • Page 14 TW8080 TransWorld Antennas TW8080 Instruction Manual...
  • Page 15 TW8080 TransWorld Antennas Final tuning notes If lower bands exhibit very low VSWR, but higher bands suffer VSWR problems (or vice-versa), the spread of the center coil can be adjusted to effect which bands tune best. By spreading the center coil slightly, the low-frequency bands will tune better, and by compressing the center coil, the higher-frequency bands will tune better.

  • Page 16: Schematics

    TW8080 TransWorld Antennas 7 Schematics This page contains the schematics for the TW8080’s TW-RB-5 loading array. TW-RB-5 Loading Array TW8080 Instruction Manual...

  • Page 17: Contact Information

    TW8080 TransWorld Antennas 8 Contact Information If you need to contact TransWorld Antennas, just drop us an email at: support@transworldantennas.com Use this email address for help with installation, setup, tuning, or operation, for product or company information, or warranty/money back guarantee claims.

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