BTX-121 (190-1202) Preparation Faxback Doc. # 15206 POWERING THE TRANSCEIVER You can power your transceiver from the supplied rechargeable battery pack. Using the Battery Pack Slide the battery pack onto the transceiver and charge the battery to use it. To remove the battery pack, press down and slide RELEASE in the direction of arrow, then, slide the battery pack off. Follow these steps to check the battery power: 1. Rotate VOLUME clockwise to turn on the transceiver. 2. Press the PUSH TO TALK button. If the BUSY/TX/BATT Indicator lights red, there is sufficient battery power for transmission. If the indicator lights yellow, you need to recharge the battery pack as described under "Charging the Battery Pack." Charging the Battery Pack You can recharge the battery pack using the supplied battery charger. Turn off the transceiver or remove the battery pack from the transceiver before you charge the battery pack. Plug the charger's barrel plug into the CHG jack on the slide of the battery pack, and connect the charger to a standard AC outlet. The charge indicator lights. NOTES: Do not operate the transceiver while you recharge the battery pack. The battery pack is typically fully discharged when you first get it. You must charge the battery pack before you use the transceiver. Charging time is 14 to 16 hours the first time. Subsequent chargings take about 14 hours. Nickel-cadmium batteries deliver more power if you occasionally let them completely discharge. To do this, use the transceiver until the BUSY/TX/BATT indicator lights yellow when you press the .PUSH TO TALK button. Then, fully charge the battery pack. If you do not occasionally do this, the batteries can temporarily lose the ability to deliver full power. CAUTIONS: To prevent permanent battery power loss, never charge the batteries in an area where the temperature is above the 80 degrees F. The charger does not operate at all at temperatures below 32 degrees F or above 113 degrees F. Never use any other charger to recharge the transceiver's battery pack. This could permanently damage your transceiver or the battery pack. This product contains a rechargeable nickel-cadmium (lead acid) battery. At the end of the battery's useful life, it must be recycled or disposed of properly. Contact your local, county, or state hazardous waste management authorities for information on recycling or disposal programs in your area. Some options that might be available are: municipal curbside collection, drop-off boxes at retailers, recycling collection centers, and mail-back programs. CONNECTING THE ANTENNA Attach the flexible antenna to the antenna jack on top of the transceiver. Place the slot in the antenna's connector over the protrusion on the antenna jack, and turn the antenna's connector clockwise until the antenna locks into place. The antenna jack (BNC-type) on your transceiver makes it easy to use with a variety of antennas. The supplied antenna can be removed if you wish to try a different one. You can attach an external mobile antenna or an outdoor base antenna. WARNING: When installing or removing a base station antenna, use extreme caution. If it starts to fall, let it go! It could contact overhead power lines. If the antenna touches the power line, contact with the antenna, mast, cable or guy wires can cause electrocution and death! Call the power company to remove the antenna. Do no attempt to do so yourself. USING AN EARPHONE For private listening or to hear better when there are other noises, plug an earphone into the EAR jack. on the top of the transceiver. This disconnects the speaker. We recommend Radio Shack's monaural earphone (Cat. No. 33-175). USING AN EXTERNAL MICROPHONE An external microphone (Cat. No. 19-310) can make the transceiver easier to use when you clip it to your belt. Plug the microphone cable's connector into the external microphone/speaker jacks on the top of the transceiver. This disconnects the transceiver's speaker. The transceiver's internal PUSH-TO-TALK button still works. CHANGING OR INSTALLING CRYSTALS Your transceiver comes with a pair of crystals installed in Channel A for operation on 154.600. You can order crystals from your local Radio Shack store for Channel B or as replacements for Channel A. Be sure to specify the transceiver's catalog number - 190-1202. You must request a frequency assignment from NABER (National Association of Business and Educational Radio) before ordering crystals. Call NABER at 800-759-0300 (in VA, call 703-739-0300). They will advise you of the information they require, as well as the current fees. You will then send your FCC Form 574 to NABER. They will assign a frequency and forward the application to the FCC. Follow these steps to install crystals. 1. Remove the battery pack. 2. Loosen the four screws on the battery latch plate. 3. Remove the four screws from the transceiver's back and remove the back cover. 4. Install the new crystals in the sockets. Be sure to install the receive and transmit crystals in the correct sockets. 5. Replace the back cover and secure it with the four screws. 6. Tighten the four screws on the battery latch plate. ORDERING CRYSTALS To determine the crystals you need, use the following formulas: Transmit = Operating Frequency Crystal ─────────────────── 8 Receive = Operating Frequency - 10.7 MHz Crystal ────────────────────────────── 4 For example, to transmit and receive on 151.455 MHz, specify a transmit crystal of 18.931875 (151.455 MHz/8) and receive crystal of 35.18875 MHz ((151.455 - 10.7 MHz)/4). Channel A crystals are soldered in, and can only be replaced by a qualified technician. We recommend you only order crystals for this transceiver through your local Radio Shack store. If you do purchase from another source, the following information might help you receive a crystal that works in this transceiver. Package Type: HC-50/T Load Capacitance: 20 pF (ALL-05/09/95)