Kenwood TS-990S Operation Manual - Page 15

1 INSTALLING AND CONNECTING THE TRANSCEIVER Precautions FOR INSTALLATION To carry and install the transceiver requires two or more persons. Due to the size and weight of the equipment, installing the transceiver by yourself may cause you personal injury and/or damage the transceiver. Do not grasp the transceiver by the Tuning control, the knobs or connectors on the front and rear panels. Doing so may cause you personal injury and/or damage the transceiver knobs and connectors. ANTENNA Installation AND CONNECTION An antenna system consists of an antenna, a coaxial cable and a ground. With careful installation, a good antenna system can result in optimal performance for the transceiver. Ensure that you are using a correctly tuned 50Ω antenna and that the coaxial cable and appropriate connectors also have an impedance of 50Ω. All connections must be clean and tight. After making the connection, match the impedance of the coaxial cable and antenna until the SWR becomes 1.5:1 or less. A high SWR results in a drop in the transmit power as well as radio frequency interference to consumer products such as broadcast radio and television. If you are notified that the signal has been distorted, the antenna system may not be efficiently radiating the transceiver's power. PRECAUTIONS ◆◆Transmission without connecting an antenna to the transceiver may damage the transceiver. Prior to transmitting, connect an antenna or a 50Ω dummy load to the transceiver. ◆◆When using the transceiver as a base station, we recommend you install an arrester so as to avoid fire, electric shock, damage and injury. ◆◆If the antenna SWR exceeds 1.5:1 or more, the protection circuit activates in the transceiver. Ensure that the antenna SWR is 1.5:1 or lower. ◆◆If the antenna dedicated for reception uses a semiconductor, such as an active antenna, do not transmit with it nor activate the antenna tuner. Doing so will supply power to the antenna system, damaging the semiconductor circuits of the antenna. connected to the ground terminal before plugging the AC plug into the outlet. Likewise, remove the ground connection only after unplugging the AC plug. Failure to do so may result in an electrical shock. PRECAUTIONS ◆◆The AC power cable supplied with the K-type transceiver can only be used for the supply voltage AC 120V. Do not use or modify the supplied AC power cable with the UL plug for the supply voltage AC 220V - AC 240V. ◆◆The AC power cable with the CE plug and the AC power cable with the BS plug are supplied with the E-type transceiver. Use one of the supplied cables that can correctly be plugged to an AC outlet. GROUND CONNECTION To avoid dangers such as electric shock, a good ground connection is necessary. Bury one or more grounding rods or a large copper plate in the ground and connect it to the GND terminal on the rear panel of the transceiver using a thick conductive wire or a well fitted copper band plate. PRECAUTION ◆◆Do not use a gas pipe, an electrical conduit pipe, a plastic water pipe, etc., for grounding. These items will not create a proper ground and may cause an accident or fire. LIGHTNING ARRESTER INSTALLATION To avoid fire, electrification, damage, and injury by the lightning strike, install the lightning surge protector. If a lightning storm is in the area, disconnect the antenna cable from the transceiver. TRANSCEIVER TILT MECHANISM The lift-up supplementary bases are on the front bases on the bottom of the transceiver. To position the front panel slightly toward the upper side, pull the supplementary bases forward to the limit. To use the front bases, be careful not to catch your fingers when lifting up the front bases' mechanism. CONNECTING AN AC POWER CABLE Use the supplied AC power cable to plug to an AC outlet with a protective grounding contact. Ensure that the grounding lead from the AC plug has been properly ANT 4 HF/50MHz (M-type) ANT 3 HF/50MHz (M-type) ANT 2 HF/50MHz (M-type) ANT 1 HF/50MHz (M-type) GND terminal RX IN AC Power Cable (Supplied) Rear Panel Contents Index 1-1