Related Manuals for Icom AH-740
Summary of Contents for Icom AH-740
- Page 1 INSTRUCTION MANUAL HF AUTOMATIC TUNING ANTENNA AH-740 * The “stand” in the photo is not supplied with the tuning antenna.
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Page 2: Important
ABOUT CE AND DOC Thank you for purchasing the AH-740 hf automatic tuning antenna. The AH-740 is designed, primarily for use with Icom HF Hereby, Icom Inc. declares that the versions transceivers. of AH-740 which have the “CE” symbol Refer to your HF transceiver instruction manual for on the product, comply with the essential operation. -
Page 3: Table Of Contents
–40°C (–40ºF) or above +70°C (+158ºF). D Control connector information ........7 ■ Options ................7 Icom and the Icom logo are registered trademarks of Icom Incorporated (Japan) in Japan, the United States, the United Kingdom, Germany, France, Spain, Russia, Australia, New Zealand, and/or other countries. -
Page 4: Supplied Accessories
Purchase the item locally. disasters, disturbances, riots, war, or radioactive contamination. • Mounting base • The use of Icom products with any equipment that is not • Rubber vulcanizing tape manufactured or approved by Icom. • Electrical tape... -
Page 5: System Installation
■ About mounting base from rusting with conductive grease, before bolting the mounting stud and ground strap terminals. A mounting base for the AH-740 installation must be locally prepared. ■ Cabling A coaxial cable and a control cable are supplied with the Select or fabricate a strong metal bracket for the antenna tuning antenna. -
Page 6: Installations
INSTALLATIONS ■ Typical installation scenarios Most recommended SUV installation scenarios use a Recommended installation options on a typical sedan Universal Gibbet Mounting System (front) or the Spare vehicle use a Universal Gibbet Mounting System for both Wheel Antenna Bracket (rear). Note the tuning antenna unit front and rear antenna locations. -
Page 7: D Precautions When The Optional Ah-5Nv Is Installed On A Vehicle
INSTALLATIONS For best communications, position the antenna as high as What is NVIS? possible. The Figure 1 shows the preferred option selection. NVIS stands for Near Vertical Incidence Skywave. The Figure 2 shows an antenna installation that uses the The NVIS radio-wave propagation provides usable signals optional AH-5NV, for best communications on the 30–300km between groundwave and skywave distances. -
Page 8: Installation Outline
We recommend that installation of the AH-740 be carried out by qualified technicians only. Mounting base AH-740... -
Page 9: Cable Connections
INSTALLATIONS 4 Ground the transceiver, AH-740 and shield cable of the • Mount the antenna on a mounting base with a 17 mm control cable to the ground terminal. (0.67 inches) hole for the M16×2 mm (M0.63×0.08 inches) threaded mounting stud. -
Page 10: Optional Ah-5Nv
INSTALLATIONS ■ Optional AH-5NV When using the AH-740 with the optional AH-5NV, install the 1 Place the swivel magnet holder onto the vehicle, and AH-5NV as follows. attach the NVIS antenna element to the antenna spring of the AH-740. • Secure the antenna element by tighten the set screws. -
Page 11: Specifications And Options
3.5 kg, 7.7 lb (approximate) (except whip and Approximately 6 m (19.7 ft) long control cable for Icom's amateur antenna spring) transceivers, that have a 4 pin type antenna tuner control connector. All stated specifications are subject to change without notice... - Page 12 How the World Communicates A7088H-1EX-2 Printed in Japan 1-1-32 Kamiminami, Hirano-ku, Osaka 547-0003, Japan 2013–2024 Icom Inc. Apr. 2024 ©...