User manual ICOM AH-4

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ICOM AH-4 : Download the complete user guide (357 Ko)

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   ICOM AH-4 BROCHURE (211 ko)

Manual abstract: user guide ICOM AH-4

Detailed instructions for use are in the User's Guide.

[. . . ] Please read these instructions thoroughly before using the AH-4. I Antenna description READ ALL INSTRUCTIONS carefully and completely before using the AH-4. SAVE THIS INSTRUCTION SHEET!-- This instruction contains important safety and operating details for the AH-4. Top element I PRECAUTION R WARNING: HIGH VOLTAGE! [. . . ] R WARNING SUSPEND operation immediately or NEVER put up the antenna when thunder occurs or can be heard in the distance. R WARNING NEVER assemble or disassemble the antenna at any crowded area. DISCONNECT the antenna when not using the antenna for long period of time. DO NOT use chemical agents such as benzine or alcohol when cleaning, as they can damage the AH-4. READ THE IC-703 INSTRUCTION MANUAL FIRST before attempting to operate the transceiver. Base element Short terminal A Loading coil A Short terminal B Loading coil B Short terminal C Loading coil C Short terminal D Loading coil D Short terminal E Short element Antenna connector (PL-259 type) I Antenna specifications I Supplied items Top element Base element Allen wrench · Frequency coverage : 7, 14, 21, 28 and 50 MHz bands · Type of antenna : 1/4 type whip antenna · Antenna connector : PL-259 (50 : nominal) · Max. · Keep the separation cable on the outside of the LC-156. Adjustable Tighten Loosen AH-4 controller case IC-703 ; ; ; ; ; ; ; t Repeat the steps e and r until the VSWR becomes better than 1. 5:1. Separation cable Pass the grounding wire through the cable hole and keep in the side pocket. I Operation hints K The IC-703 separation cable may work as the grounding cable (counterpoise). K The quality of communication during portable operation depends on the operating frequency, field condition, etc. When the operating condition is not good, changing the place of operation may help improve operating performance. K When changing the operating frequency, manual tuning is helpful for good operation. Even changing the frequency 10 kHz, you should start with manual tuning. The above illustration is example only When SWR cannot be reduced, abnormal functioning of the transceiver may occur, etc. , change the cables (grounding, separation, DC power and microphone cables) wiring, as described in the "I Operation hints". I Adjusting the antenna q Set the desired operating frequency on the IC-703. [. . . ] K When changing the operating frequency, manual tuning is helpful for good operation. Even changing the frequency 10 kHz, you should start with manual tuning. The above illustration is example only When SWR cannot be reduced, abnormal functioning of the transceiver may occur, etc. , change the cables (grounding, separation, DC power and microphone cables) wiring, as described in the "I Operation hints". I Adjusting the antenna q Set the desired operating frequency on the IC-703. [. . . ]

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