AM/FM Aircraft Radio (120-0615) Preparation Faxback Doc. # 17254 You can power your radio from any of these power sources: Internal battery power Standard AC power (using an AC adapter) Vehicle battery power (using a DC adapter) USING INTERNAL BATTERY POWER You can power the radio from three AA batteries (not supplied). For the best performance, we recommend alkaline batteries, such as Radio Shack Cat. No. 23-552 or 23-557. Follow these steps to install batteries. 1. Press down on the battery compartment cover and slide it open. 2. Install three fresh AA batteries, as indicated by the polarity symbols (+ and -) inside the battery compartment. CAUTION: Use only fresh batteries of the required size and type. Never mix fresh and old batteries, or different battery types. NOTE: To make it easier to replace the batteries when needed, place them over the ribbon. 3. Replace the cover. NOTES: If the sound gets distorted or weak, replace the batteries. If you do not plan to use the radio for a week or more, remove the batteries from the battery compartment. USING STANDARD AC POWER You can power the radio from standard AC power using an optional AC adapter, such as Radio Shack Cat. No. 273-1650 (not supplied). CAUTION: The recommended AC adapter supplies 4.5 volts, delivers 300 milliamps, and its plug correctly fits the radio's DC 4.5V jack. Its center tip is set to negative. Using an adapter that does not meet these specifications could seriously damage the radio or the adapter. Be sure you connect the AC adapter to the radio before you connect it to the AC outlet, and then disconnect it from the AC outlet before you disconnect it from the AC outlet before you disconnect it from the radio. Otherwise, the unconnected plug might touch some metal and damage the adapter. Follow these steps to power the radio from a standard AC outlet. 1. Set the adapter's voltage switch to 4.5V. 2. Insert the green-tipped Adaptaplug's black end into the AC adapter's cord so it reads TIP NEG. 3. Insert the Adaptaplug's other end into the radio's DC 4.5V jack. NOTE: Connecting an AC adapter automatically disconnects internal battery power. 4. Plug the adapter into a standard AC outlet. USING VEHICLE BATTERY POWER You can power the radio from a vehicle's battery using an optional DC adapter, such as Radio Shack Cat. 270-1560 (not supplied) CAUTIONS: The vehicle must have a 12-volt DC, negative-ground electrical system. The recommended DC adapter supplies 4.5 volts, delivers 300 milliamps, and its plug correctly fits the radio's DC 4.5V jack. Its center tip is set to negative. Using an adapter that does not meet these specifications could seriously damage the radio or the adapter. Be sure you connect the DC adapter to the radio before you con- nect it to the cigarette-lighter socket, and then disconnect it from the radio. Otherwise, the unconnected plug might touch some metal and damage the adapter. Follow these steps to power the radio from a vehicle's battery. 1. Set the adapter's voltage switch to 4.5V. 2. Insert the blue-tipped Adaptaplug's dual pin end into the DC adapter's cord to read -TIP-. 3. Insert the Adaptaplug's other end into the radio's DC 4.5V jack. Note: Connecting a DC adapter automatically disconnects internal battery power. 4. Plug the adapter into a vehicle's cigarette-lighter socket. CONNECTING AN EARPHONE To listen to the radio in privacy, insert the supplied monaural earphone's 1/8-inch plug into the EAR jack. NOTE: Connecting an earphone automatically disconnects the internal speaker. Listening Safely To protect your hearing, follow these guidelines when you use the ear- phone. Do not listen at extremely high volume levels. Extended high-volume listening can lead to permanent hearing loss. Set the volume to the lowest setting before you begin listening. After you begin listening, adjust the volume to a comfortable level. Once you set the volume, do not increase it. Over time, your ears adapt to the volume level, so a volume level that does not cause discomfort might still damage your hearing. Traffic Safety Do not wear the earphone while operating a motor vehicle or riding a bicycle. This can create a traffic hazard and is illegal in some areas. Even though some earphones are designed to let you hear some outside sounds when listening at normal volume levels, they still present a traffic hazard. USING THE WRIST STRAP For your convenience, the radio has a wrist strap. To hang the radio from your wrist, simply slip the strap over your wrist.