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A high Quality antenna will maximize your transmit range and reception clarity, and compliment your Humminbird VHF radio. You can use your Humminbird VHF radio with any other quality marine band antenna . If you intend to use a previously installed antenna, check it before installing your radio to make sure all connections are tight and free of corrosion. Note: Do not operate the Humminbird VHF radio without an antenna, or with a “CB” antenna. Attempting to do so may damage the unit. Humminbird is not responsible for damages caused by operation without an antenna or with an inappropriate antenna. In addition to the antenna options listed previously, Humminbird offers the following optional accessory for your VHF radio. Accessory Part No. Use Speaker adapter SAC-R Allows Cable connection of External speaker For more information on these accessories, contact your local Humminbird dealer or call our toll- free Customer Support Hotline. OBTAINING APPROPRIATE LICENSES Before operating your Humminbird VHF radio, you must apply for the appropriate licenses. For your convenience, the product box includes license applications that you can fill out and mail as instructed on each application. Ship Station License Any craft equipped with a VHF/FM transceiver (such as your Humminbird VHF radio) is considered a Ship Station, and must carry a current Ship Station License. It is unlawful to operate an unlicensed Ship Station. Your license will state the call sign, which is your craft’s identification for radio purposes. Be sure to complete and mail the Ship Radiotelephone License application (FCC Form 506A), provided with your Humminbird VHF radio. You may obtain an interim Ship’s Stations license by appearing in person at your local FCC Field Office. Operator’s License In the U.S., you may need to apply for a Restricted Radiotelephone Operator Permit, or higher grade license, before operating your Humminbird VHF radio. (The operator’s license is not required for voluntary equipped vessels on domestic voyages. To apply, complete and mail FCC Form 753, provided with your Humminbird VHF radio. An interim permit is automatically granted upon submission of the application. Other countries may have specific licensing requirements. Installing The VHF Radio Installation Location The first step in installing the Humminbird VHF radio is to determine the best mounting location. The gimbal mount included with your radio offers mounting capabilities for the top or bottom of a shelf, the bulkhead, or overhead. The radio can be tilted up or down on its mount to allow maximum ease of viewing and operation. To choose the best location for installation, consider the following: • The mounting surface must be adequately supported to protect the radio from excess wave shock and vibration. • The mounting area should allow at least 2” clearance at the back of the unit for connectors and air flow. • Do not mount the radio within 12” of your compass (due to the magnet in the built-in speaker). Similarly, if you are mounting an auxiliary speaker, keep it away from the compass. • Any depth sounder will create some degree of radio interference (which Humminbird depth sounders are designed to minimize) through the antenna cable. To further minimize potential interference, route the antenna and transducer cables as far away from each other as possible- for example, on opposite sides of the boat. A “rubber duckie” antenna is less prone to interference than longer-range, cabled antennas. • Keep all cable runs away from electrical pumps, depth sounders, generators, and other electronic instruments. • Do not mount vertically- water may collect in the speaker grille and distort sound. • Interference may also be created by the alternator, bilge pump and other devices. If this causes a problem- connect the radio to an alternative power source. When mounting your antenna, refer to the instructions included with it to determine the best antenna location. The antenna should be located away from metal objects. Mounting the base of the antenna higher than the depth sounder will reduce the potential for interference. Mounting the antenna as high above the water line as possible ensures the greatest range of reception and transmission. Installing the Gimbal Mount and Radio After you have determined the best location for your VHF radio, proceed as follows: 1. Set the gimbal mount on the mounting surface. 2. Mark 1/16” starting holes for the mounting screws. 3. At least 6” behind the bracket, mark a .” hole to run the cables through. 4. Set the gimbal mount aside and drill the holes as marked. 5. Mount the bracket, using the mounting hardware supplied with your VHF radio. 6. To connect the power cable to the 12-volt DC power source, wire the VHF radio through your fuse panel with the supplied 6-amp fuse. If your boat does not have a fuse panel, you can wire the power cable to the battery with the 6-amp fuse and fuse holder (also supplied) in the positive wire, as sho...