Icom_AH-740_user.pdf

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1、INSTRUCTION MANUAL AH-740 HF AUTOMATIC TUNING ANTENNA * The “stand” in the photo is not supplied with the tuning antenna. i FOREWORD Thank you for purchasing the AH-740 HF AUTOMATIC TUNING ANTENNA. The AH-740 is designed, primarily for use with Icom HF transceivers. Refer to your HF transceiver inst

2、ruction manual for operation. If you have any questions, contact your dealer. IMPORTANT READ ALL INSTRUCTIONS carefully and completely before using the AH-740. SAVE THIS INSTRUCTION MANUAL. This instruc- tion manual contains important safety and installation instruc- tions. EXPLICIT DEFINITIONS WORD

3、DEFINITION R DANGER! Personal death, serious injury or an ex- plosion may occur. R WARNING! Personal injury, fi re hazard or electric shock may occur. CAUTIONEquipment damage may occur. NOTE Recommended for optimum use. No risk of personal injury, fi re or electric shock. FEATURES Compact and light

4、weight Fast tuning speed Covers 2.2 to 30 MHz range when using with the optional NVIS kit Icom, Icom Inc. and the Icom logo are registered trademarks of Icom Incorporated (Japan) in Japan, the United States, the United King- dom, Germany, France, Spain, Russia and/or other countries. ii PRECAUTIONS

5、RDANGER HIGH VOLTAGE! NEVER touch the antenna terminal, ground terminal, antenna while transmitting. RWARNING! NEVER transmit while installing the anten- na. This may cause an electric shock. NEVER use without a ground connection. USE the ground terminal for ground connection. DO NOT operate your HF

6、 transceiver without running the vehicles engine. When the transceivers power is ON and the vehicles engine is OFF, the vehicles battery will soon be- come exhausted. DO NOT use the AH-740 in areas where the temperature is below 40C (40F) or above +70C (+158F). TABLE OF CONTENTS FOREWORD i IMPORTANT

7、 i EXPLICIT DEFINITIONS i FEATURES i PRECAUTIONS ii TABLE OF CONTENTS ii SUPPLIED ACCESSORIES iii MISCELLANEOUS ITEMS iii 1 SYSTEM INSTALLATION .1 Ground connection 1 Cabling 1 Coaxial cable 1 About mounting base 1 2 INSTALLATIONS .2 Typical installation scenarios 2 Precautions when the optional AH-

8、5NV is installed on a D vehicle 3 Installation outline 4 Mounting 4 Cable connections 5 Optional AH-5NV 6 3 SPECIFICATIONS AND OPTIONS .7 Specifi cations 7 Control connector information D 7 Options 7 RWARNING! At least two people are needed to unpack the optional AH-5NV NVIS KIT. Work in an open spa

9、ce as the element is tightly coiled and can spring open with a lot of force. This could cause a serious injury or other damage. iii SUPPLIED ACCESSORIES The following accessories are supplied with the antenna. q Control cable (approximately 6 m; 19.7 ft) . 1 w Coaxial cable (approximately 6 m; 19.7

10、ft) . 1 e Whip antenna . 1 r Antenna spring . 1 t Bolts (M8) . 2 y Nuts (M8) . 2 u Spring washers (M8) . 2 i Flat washers (M8) . 4 o Spring washer (M16) . 1 !0 Nut (M16) . 1 !1 Flat washer (M16) . 1 MISCELLANEOUS ITEMS The following items are additionally required for installation, but is not suppli

11、ed with the AH-740. Purchase the item locally. Mountingbase Rubbervulcanizingtape Electricaltape qw e rty !0 ui o!1 1 1SYSTEM INSTALLATION 1 1 Ground connection It is absolutely essential that the antenna is connected to an effective and stabile RF GROUND POINT the vehicle chassis. It is further rec

12、ommended that body panels are also bonded to the vehicle chassis. Make sure all contact points are free of paint and ground to a shiny fi nish and protected from rusting with conductive grease, before bolting the mount- ing stud and ground strap terminals. Cabling A coaxial cable and a control cable

13、 are supplied with the tun- ing antenna. A ground strap is provided on the base of the tuning antenna to ensure a reliable connection with the ve- hicles metalwork. Connect the ground strap to both the chas- sis frame or the body metalwork, whenever possible. Avoid feeding the antenna cables togethe

14、r with the engine ignition cabling routes. Use a One-Point (Star) Station Ground for the entire HF system where your transceiver is installed. Feed both (B+ and B) thick wires from the vehicle battery to the transceiver location. Do not use the vehicles metalwork as a replacement of the B wire. Use

15、suitable noise fi lters for alternators. Ask your dealer for details. Coaxial cable Insulate the lead-in cable of the AH-740 antenna terminal and antenna element from other metal objects. To prevent interfer- ence, keep cables as far as possible from other antennas and electronic equipment. About mo

16、unting base A mounting base for the AH-740 installation must be locally prepared. Select or fabricate a strong metal bracket for the antenna plate, about 810 mm (0.310.39 inches) thick, and weld or bolt it fi rmly to the vehicle chassis or other strong structure. Ask your technical dealer or install

17、er for suitable mounting base details. 2 INSTALLATIONS2 2 Typical installation scenarios Most recommended SUV installation scenarios use a Uni- versal Gibbet Mounting System (front) or the Spare Wheel Antenna Bracket (rear). Note the tuning antenna unit is kept clear of the vehicles hood and other m

18、etal panels. Best com- munications in all directions is ensured. Recommended installation options on a typical pickup vehicle use a Universal Gibbet Mounting System (front) and a cus- tomer provided bracket (middle). Both methods provide effec- tive communications in all directions. Recommended inst

19、allation options on a typical sedan vehicle use a Universal Gibbet Mounting System for both front and rear antenna locations. Note the tuning antenna unit is opti- mally raised above the trunk and hood of the vehicle. NON-RECOMMENDED installation methods use a Universal Gibbet Mounting System (both

20、at the rear) shown on a typi- cal minivan or 4WD vehicles. Note the entire Antenna Main Assembly and partially Whip Section are OBSTRUCTED by vehicle metal panels. Communications will be affected. 3 2INSTALLATIONS 2 For best communications, position the antenna as high as possible. The Figure 1 show

21、s the preferred option selection. The Figure 2 shows an antenna installation that uses the op- tional AH-5NV, for best communications on the 30300km (18.6186.5 miles) short ranges, and up to 1500 km (932 miles) medium ranges. Figure 1 Figure 2 What is NVIS? NVIS stands for Near Vertical Incidence Sk

22、ywave. The NVIS radio-wave propagation provides usable signals between groundwave and skywave distances. (between 50 and 650 km; 30 and 400 miles) The radio waves from the antenna travel upwards into the ionosphere, and then are refracted back down in a circular area. The signals can be received up

23、to 650 km (400 miles) from the transmitting sta- tion. Refraction fails if the frequency is too high. The signal strength is reduced if the frequency is too low, because of absorption. Precautions when the optional AH-5NV is in- D stalled on a vehicle RWARNING! The NVIS antenna element can swing a l

24、ot while driving. Therefore, we strongly recommend that you re- move the NVIS antenna while driving. Otherwise the antenna element may swing excessively and interfere with your driv- ing. 4 2INSTALLATIONS 4 Installation outline IMPORTANT! The antenna is a critical element in any communication sys- t

25、em. Correct installation is very important factor for achieving the utmost in antenna system performance and operation of your transceiver. We recommend that installation of the AH- 740 be carried out by qualifi ed technicians only. Attach a mounting base to a desired position on your ve- q hicle. P

26、urchasethemountingbaselocally. Mount the AH-740 onto the mounting base. w Referto“Mounting.” Connect the control and coaxial cables between the trans- e ceiver and the AH-740. Referto“Cableconnections.” Connect the ground strap to the vehicles chassis. r Referto“Cableconnections.” Attach the supplie

27、d antenna spring and whip onto the AH- t 740. AH-740 Antenna springWhip antenna Mounting RWARNING! Mount the AH-740 securely with the supplied nuts and bolts. Otherwise, vibrations and shocks due to rough terrain could loosen the antenna. It could fall, causing per- sonal injury. For the greatest ra

28、diation effectiveness, position the anten- na as high as possible. For human safety, mount the antenna at the front and oppo- site side of the drivers position, whenever possible. - Refer to the pictorial installations and scenarios shown on the pages 2 and 3. Make sure to allow enough clearance aro

29、und the antenna so that any antenna fl exing will not damage the vehicle bear in mind that the Main Assembly can fl ex as much as 16 cm (0.63 inches), without damage. Makesuretheantennaisasfarfromthevehiclesvertical and horizontal metal panels as possible. Mount the antenna on a mounting base with a

30、 17 mm (0.67 inches) hole for the M162 mm (M0.630.08 inches) threaded mounting stud. Rotate the Main Assembly until the ground strap is directed towards the vehicle body, and then fi rmly tighten the stud nut. Use only the original hardware and proper tools. 5 2INSTALLATIONS 5 2 Cable connections Co

31、nnect the coaxial cable and the control cable to the AH- q 740. Insertthecontrolcableconnectorintotheantennabodysocket, then rotate the connector ring to lock it in place. Wrap the antenna connector with rubber vulcanizing tape, w and then wrap electrical tape* over the rubber vulcanizing tape to se

32、cure waterproofi ng. * The rubber vulcanizing tape and electrical tape are not supplied with the AH-740. Purchase them locally. Secure both the coaxial and control cables to protect the e inside connections. Connect the coaxial cable and the control cable to the transceiver. Connectthecoaxialcableto

33、anappropriateantennaconnector. ConnectthecontrolcabletotheD-sub9pintypeantennatuner control connector, or the 4 pin type connector when the optional OPC-2321 is used. Seethetransceiverinstructionmanualfordetails.Theantenna tuner connections in the manual are the same as for the AH- 740. Ground the t

34、ransceiver, AH-740 and shield cable of the r control cable to the ground terminal. Coaxialcableandcontrolcableconnections Rubber vulcanizing tape, then electrical tape. Coaxial cable Control cable Aboutthegroundstrapconnection Ground strap Vehicle chassis or body 6 2INSTALLATIONS 6 6 Optional AH-5NV

35、 When using the AH-740 with the optional AH-5NV, install the AH-5NV as follows. Set screws (Use 2.6 mm; 110 allen wrench) Socket bolt (Use 10 mm; 1332 allen wrench) Use allen wrench to tighten (6 mm; 14) Swivel magnet holder Place the swivel magnet holder onto the vehicle, and at- q tach the NVIS an

36、tenna element to the antenna spring of the AH-740. Securetheantennaelementbytightenthesetscrews. Insert the antenna element into the swivel magnet holder, w as shown below. Tighten the set screw. e Allen wrench (2.6 mm; 110) Swivel magnet holder NVIS antenna Set screw 7 3SPECIFICATIONS AND OPTIONS 2

37、 3 Specifi cations Frequencycoverage:2.230MHz(with NVIS kit) 2.530 MHz (with supplied whip) Powersupplyrequirement: 13.8 V DC (supplied from the HF transceiver) Currentdrain:Maximum0.6A Operatingtemperaturerange: 40C to +70C; 40F to +158F Antennaconnector:SO-239 MaximumInputpower:125W(PEP) Automatic

38、tuningtime: Approximately2to3seconds (new frequency) 0.15 seconds (typical; retuning to a memorized frequency) Automatictuningaccuracy: SWR1.5:1(after tuning, except for multiples of 12) Dimensions:238(H) 145(W) 160(D) mm (projections not included) ; 9.4(H) 5.7(W) 6.3(D) inches (except whip and ante

39、nna spring) Weight(approximately):3.5kg;7.7lb All stated specifi cations are subject to change without notice or obligation. Control connector information D KEY START 13.8 V Front view GND SHIELD NC Options AH-5NV NVIS KIT Approximately 4.5 m (14.8 ft) long antenna, covers 2.2 MHz through 30 MHz. OP

40、C-2321CONTROL CABLE Approximately 6 m (19.7 ft) long control cable for Icoms amateur transceivers, that have a 4 pin type antenna tuner control connector. RWARNING! At least two people are needed to unpack the op- tional AH-5NV NVIS KIT. Work in an open space as the element is tightly coiled and can

41、 spring open with a lot of force. This could cause a serious injury or other damage. Approved Icom optional equipment is designed for optimal perfor- mance when used with an Icom product. Icom is not responsible for the destruction or damage to an Icom product in the event the Icom product is used with equipment that is not manufactured or approved by Icom. 1-1-32 Kamiminami, Hirano-ku, Osaka 547-0003, Japan A-7088H-1EX Printed in Japan 2013 Icom Inc.