ICOMoAmINSTRUCTIONSIC-AG1AG-25(430MHz)(144MHz)AG-3OAG-35(220MHz)(430MHz)AG-M2▣▣(1200MHz)WEATHERPROOF PREAMPLIFIERSINTRODUCTIONFEATURESICOM offers a variety of optional all-weatherproof.NO POWER CABLE WIRING is necessary since thepreamplifiers for use with ICOM transceivers,coveringRF coaxial cable is also used as the DC cable.the 144MHz,220MHz,430MHz and 1200MHz bandranges..A LOW NOISE-FIGURE AND HIGH GAIN GaAs-FETis incorporated to provide excellent performance as aThese preamplifiers improve S/N ratios and receiverlow-noise microwave amplifier.sensitivity,and make DX-communication possible..WEATHERPROOF CONSTRUCTION results from aFor maximum performance,please study these instruc-durable,acrylic plastic cover and stainless steel mount-tions carefully before installing the preamplifier.ing hardware that ensures years of dependable service.INSTALLATIONSNOTE:Test the preamplifier to make sure it op(1)Mount the preamplifier on the antenna mast in aerates before mounting it on the antennaspot that minimizes the coaxial cable length bet-mast.ween the antenna and the unit.(2)Mount the preamplifier and attach the connectorvertically to prevent water from entering the case.(see photo).(3)Clamp the coaxial cable between the preamplifierand the transceiver to prevent the weight of thecable from pulling on the preamplifier.(4)Tune your antenna before using the preamplifierMinimum antenna VSWR results in maximumpreamplifier performance.(5)DO NOT insert other units such as a filter or at-δtenuator between the preamplifier and transceiver as●800000DC shorts or DC isolation could occur.
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