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AOR LA800 Instruction Manual
AOR LA800 Instruction Manual

AOR LA800 Instruction Manual

Super loop antenna
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SUPER LOOP ANTENNA
LA800
Instruction manual
AOR Ltd.
Authority On Radio Communications

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Summary of Contents for AOR LA800

  • Page 1 SUPER LOOP ANTENNA LA800 Instruction manual AOR Ltd. Authority On Radio Communications...
  • Page 3: Table Of Contents

    Table of contents 1. Introduction ......... 2.
  • Page 4: Introduction

    To get the best possible results from your LA800, we recommend that you read this manual and familiarize yourself with the antenna. First, a word of caution: LA800 is a RECEIVE ONLY antenna. Do not transmit with it or its circuitry will be severely damaged, maybe even beyond repair.
  • Page 5: Included In This Package

    2. Included in this package Description Loop element ① Two U-bolts for mast mount ② Control box ③ Control cable (LAN type) 10m ④ BNC (F)/BNC (F) RG-58U coaxial cable 10m ⑤ AC power supply ⑥ Printed instruction manual ⑦ (for Japanese market only) ⑧...
  • Page 6: Hardware Setup

    3. Hardware setup Caution! LA800 is a RECEIVE ONLY antenna. Do not transmit with it or its circuitry will be severely damaged, maybe even beyond repair. As pictured below, mount the LA800 loop element to a (non-supplied) antenna mast, using the supplied U-bolts.
  • Page 7 For balcony mount, you can also use typical satellite dish balcony mounts, as pictured below. Such mounts are not supplied by AOR but are usually sold at home-centers. The loop element’s electronic circuitry is housed in an ABS plastic box, water and dust proof to IP65 standard.
  • Page 8 Finally, connect the AC power supply to the control box. LA LA800 Loop (outdoors) Indoors Control box Receiver’s antenna input socket AC power supply To connect LA800 to an antique receiver with 600 antenna terminal, use the optional MC-600 Impedance Matching Transformer.
  • Page 9: Operating Instructions

    For example for band switch position 1 (150kHz to 800kHz), it would be roughly peaked on 475kHz. Tuning is most critical above 3MHz. For best performance of LA800 and optimal reception conditions, make sure the selected band is appropriate for the received frequency, and search for the signal peak with the tuning knob.
  • Page 10: Directivity Of A Loop Antenna

    180 degrees. The null in reception that is located at right angles to the plane of the loop can be used for interference reduction. On the other hand, received signal strength is greatest in the directions indicated by the arrows. Horizontal radiation pattern of LA800 NULL NULL NULL: Angle from which magnitude of the radiation pattern decreases to zero.
  • Page 11: Characteristics Of A "Shielded" Loop Antenna

    By these principles, LA800 responds to the magnetic field rather than the electric field, thus efficiently isolating the low frequency electrostatic noise from the distant signal to be received.
  • Page 12: Options

    MC-600 Impedance matching transformer Passive impedance matching transformer interface which allows your LA800 to be connected to any antique receiver with a 600 antenna terminal. Supported frequency range: 10kHz to 30MHz. MC-600 has the same isolation feature than the GT-1 accessory .
  • Page 13: Specifications

    8. Specifications LA800 Super Loop Antenna Loop size Diameter: 780mm (to the pipe center) Loop type Aluminum pipe: 20mm (2mm thick) 10kHz 〜 500MHz Frequency range 150kHz 〜 30MHz (5 band selectable) Aligned range 10kHz 〜 150kHz, 30MHz 〜 500MHz...
  • Page 14 ® AOR Ltd. 2-6-4 Misuji, Taito-ku, 111-0055 Tokyo, Japan Authority On Radio Communications www.aorja.com (Jan.17, 2013)