Yaesu_ATAS-120_user.pdf

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1、ACTIVE TUNING ANTENNA SYSTEM ATAS-120 INSTALLATION/OPERATING INSTRUCTIONS Thank you for choosing Yaesus exciting new ATAS-120 Active Tuning Antenna System. We hope and trust that you will enjoy many years of enjoyable mobile operation with the ATAS-120! The ATAS-120 is a unique mobile antenna design

2、ed for use with Yaesu the transceivers equipped for the ATAS system, such as the FT-897, FT-847 and FT-100/-100D. The ATAS-120 utilizes a motorized tuning system which resonates the radiating element for lowest SWR without the need for expensive, inconvenient monoband resonating whip assemblies. The

3、 ATAS-120 is designed to mount directly onto a standard mobile antenna mount (not supplied) which is compatible with its Type “M” (“m/m pitch only”) base connector. Your Dealer will be pleased to help you select the ideal mobile mounting assembly for your vehicle. INSTALLATION ?Refer to the drawing,

4、 and secure the radiating ele- ment to the top of the coil assembly, using the sup- plied Allen wrench. ?Refer to the manufacturers instructions, and install the mounting base assembly in a location where a solid, se- cure ground connection to the car body can be ob- tained. Note: Installation of th

5、e ATAS-120 on a hatchback or trunk lid may not permit a low SWR to be obtained. A solid bond to the car body is important so as to establish a counterpoise for the vertical radiating element. ?Connect the coaxial cable from the mounting base to the transceivers HF antenna jack. ?Refer to the transce

6、ivers operating manual, and set the transceivers Menu selections associated with the ATAS system. For operation on the 144 and 430 MHz bands, in addition to HF/50 MHz, you may wish to consider the purchase of a “Diplexer” (for the FT-897 and FT-100/-100D) or “Triplexer” (for the FT-847) device to co

7、nnect to the appropriate transceivers antenna jacks; the Diplexer or Triplexer will then automatically pass RF power from the band in use while iso- lating the other two antenna jacks. If you do not have a Diplexer or Triplexer, the coaxial cable connector from the ATAS-120 will have to be moved man

8、ually to the appropriate antenna jack when you wish to operate on VHF or UHF. OPERATION See the “Operation” section of the transceivers operating manual for details of ATAS-120 tuning and operation. CAUTIONS ?For mounting onto s trunk lid or hatchback of a vehicle, utilize a mount which provides sec

9、ure, strong mechanical contact to the vehicles frame (to support the antennas cross-sectional area while driving, as well as for ground- ing purposes). Suitable mounts include the Diamond mod- els TE5M and K400. ?In the interest of operator safety, always use the minimum transmitter power necessary

10、to establish and maintain com- munications while operating mobile, and restrict trans- mitter operation when pedestrians are within one meter (3.3 feet) of the radiating element. ?Do not allow anyone to touch the radiating element dur- ing a transmitting session, due to the danger of burning of the

11、skin caused by the high RF voltage present. ?Do not install the ATAS-120 in a position where the radi- ating element could come in contact with (A) any electri- cal wiring, which could cause lethal shock, or (B) a grounded metal surface, as this will disrupt communica- tions and may cause arcing. ?D

12、o not touch the bellows of the ATAS-120, so as to avoid undue stress to it or the mechanical components within it. ?Do not attempt to perform the tuning process while driv- ing a vehicle. ?Disconnect the ATAS-120 from the vehicle when wash- ing your vehicle to prevent ingress of water into the ATAS-

13、 120. ?Because of the cross-sectional area of the ATAS-120, simple magnetic mounts will not provide sufficient hold- ing power to secure the ATAS-120 reliably, and are not recommended. ?The ATAS-120 is designed specifically for use with Yaesu transceivers equipped for the “ATAS” system, and is not c

14、apable of automatic operation with other transceiver mod- els. ?Note that the bellows may become slightly distorted dur- ing the Auto-Tuning process; this does not affect opera- tion of the antenna, however. ?For base station operation, if you do not have a good coun- terpoise system such as a townh

15、ouse balcony, VHF/UHF performance can be enhanced by the installation of the optional Yaesu ATBK-100 Antenna Base Kit. ?There are no user-serviceable parts inside this antenna. Reckless turning of the top of the antenna coil may result in breakage of the antenna coil wire and/or other internal damag

16、e. SPECIFICATIONS FREQUENCY RANGE:7/14/21/28/50/144/430 MHz Amateur Bands HEIGHT (Approx.):1.4 1.6 meters (4.59 5.24 feet) WEIGHT (Approx.):900 g (1.98 lbs.) INPUT IMPEDANCE:50 MAX. INPUT POWER: 120 Watts (A3J) MATCHED SWR:Less than 2.0:1 (with proper counterpoise) (Specifications subject to change

17、without notice or obligation) Element Antenna coil assembly Tighten Allen screw to secure element Insert element into top of coil assembly Allen wrench (supplied) Setscrews (supplied) EAC81X700 VERTEX STANDARD CO., LTD. 4-8-8 Nakameguro, Meguro-Ku, Tokyo 153-8644, Japan VERTEX STANDARD US Headquarte

18、rs 10900 Walker Street, Cypress, CA 90630, U.S.A. International Division 8350 N.W. 52nd Terrace, Suite 201, Miami, FL 33166, U.S.A. YAESU EUROPE B.V. P.O. Box 75525, 1118 ZN Schiphol, The Netherlands YAESU UK LTD. Unit 12, Sun Valley Business Park, Winnall Close Winchester, Hampshire, SO23 0LB, U.K. VERTEX STANDARD HK LTD. Unit 5, 20/F., Seaview Centre, 139-141 Hoi Bun Road, Kwun Tong, Kowloon, Hong Kong Downloaded by? RadioAmateur.EU