ICOM艾可慕Icom_AH-4_user操作说明书手册

Thank you for purchasing the AH-4 AUTOMATICINSTRUCTIONSANTENNA TUNER.The AH-4 matches your trans-ceiver to an antenna more than 7 m/23 ft long (3.5HF+50 MHz AUTOMATIC ANTENNA TUNERMHz and above).AH-4Please read these instructions thoroughly before in-stalling and operating the AH-4.DANGER?ANEVER use this tuner when it is ungrounded.Alwaysground the tuner through the ground terminal beforeoperating.DO NOT use the mounting plates forgrounding.NEVER transmit or tune without an antenna.Failure toGround terminaluse an antenna will damage the tuner.AHIGH VOLTAGE!NEVER touch the antenna whiletransmitting or tuning.Place the antenna in a positionMounting platewhere you are sure it will not be touched.FEATURESO WIDE TUNING RANGEOWEATHERPROOF DESIGNThe AH-4 provides reliable matching of frequenciesThe AH-4's tightly sealed plastic case allows conve-from 3.5 MHz to 54 MHz when using at least a 7 mnient mounting virtually anywhere.The AH-4 can be(23 ft)antenna;or 7 MHz to 54 MHz when using themounted outdoors under your antenna.AH-2b ANTENNA ELEMENT.O0.3 W RADIATED POWERO AUTOMATIC DIGITAL CONTROL TUNINGRadiated power during tuning is less than 0.3 W,The built-in 8-bit microprocessor chooses the lowestminimizing interference to other stations.SWR condition from more than 1,040,000 differentLC (coil/capacitor)combinations.NOTE:50 MHz tuning is possible with the IC-729*,IC-706MKIl,IC-746 and IC-756;the IC-706 and IC-O 45 FREQUENCY MEMORIES FOR FAST TUNING736 can only be tuned 3.5-30 MHz.The LC combinations of 45 previously-used frequen-*Connect a 50 MHz antenna connector for 50 MHzcies are automatically memorized in the AH-4.Onceoperation.a frequency is memorized,the AH-4 tunes on thatfrequency in less than 1 sec.Note that the AH-4Provided by▣http://www.yaesu-museum.comdoes not memorize a frequency which is normally■tuned within 2.5 sec.Memories are retained onlyDownloaded bywhen the power is on.Amateur Radio DirectorySUPPLIED ACCESSORIES①U-bolts.2②U-bolt plates1713 Flat washers(M6 large).2④Flat washers(M6smal）.45Spring washers (M6).8⑥NUts(M6).....8⊙⑦Hex head bolts(M6×50).⊙⊙⑧Self-tapping screws(A06×3o).4.4⊙⊙⊙⊙⑨PL-259 connectors.2④回回回回oWeatherproof cap1⑤⑤⑤®⑤面⑤⑤⑤①Control cable(OPC-136;5m）..1国回回回回回回回回②Coaxial cable(5D-2V×5m).1⑨