Kenwood TS-870S User Manual - Page 21

REAR PANEL q GND ANT 2 w ANT 1 3 GETTING ACQUAINTED er DC 13.8V 20.5A AT EXT RX ANT IF OUT 1 REMOTE EXT SP 8ɹЊ

ACC 2 KEY PADDLE RT TY COM ty u i o !0 !1 !2 q GND post with wing nut Connect a heavy gauge wire or copper strap between the ground post and the nearest earth ground {page 3}. Do not connect the ground wire to either your house electrical wiring, or gas or water pipes. A well-grounded transceiver will reduce the risk of interference to television, broadcast radio receivers, and other electronic devices. A good ground can also reduce receiver noise caused by static discharges. w ANT 1 and ANT 2 connectors Connect the feed lines from your antennas to these connectors. Refer to pages 2 and 63 for details. e Power Input DC 13.8 V connector Connect a 13.8 V DC power source {page 3}. Use the supplied cable with a regulated DC power supply. The TS-870S draws less than 20.5 A at maximum transmit output. r AT connector Mates with the connector on the cable supplied with the AT-300 antenna tuner. Refer to the instruction manual supplied with this tuner for more information. t EXT RX ANT jack Mates with an RCA pin plug for connecting a separate receiver. Menu No. 53 enables this jack. Never transmit into this jack. Signals received by the TS-870S are distributed via a power divider to the TS-870S receive stage and the external receiver. Therefore, connecting an external receiver reduces the signal level. y IF OUT 1 jack Mates with an RCA pin plug for connecting the 8.83 MHz IF for pan display of an SM-230 Station Monitor {page 6}. u REMOTE connector Mates with a 7-pin male DIN connector for connecting a linear amplifier {page 5}. i EXT SP jack Mates with a 3.5 mm (1/8") diameter, 2-conductor (mono) plug for connecting an external speaker {page 4}. Connecting an external speaker cuts off the audio automatically to the internal speaker. o ACC 2 connector Mates with a 13-pin male DIN connector for connecting various accessory equipment {page 6}. !0 PADDLE and KEY jacks Mates with a 6.0 mm (1/4") 3-conductor plug and a 3.5 mm (1/8") 2-conductor plug for connecting a key paddle for the internal electronic keyer and another key for CW operation respectively. Read "Keys and Keyboards for CW Operation" {page 4} before connecting to these jacks. !1 RTTY jack Mates with an RCA pin plug for connecting the RTTY key output from RTTY equipment to operate true frequency shift keying (direct keying) {page 5}. !2 COM connector Mates with a 9-pin female RS-232C connector for connecting a computer via one of its serial communication ports {page 83}. Functions on the transceiver can be controlled remotely by using a communications program on the computer {pages 5, 83}. Also used with the Quick Data Transfer function {page 65}. Note: Before using the REMOTE, ACC 2, and COM connectors, remove the protective covers. 15