Page 31FT-2000D OPERATING MANUALREAR P ANELRX ANT OUT JackThis BNC jack provides output of the receiver signallines from the Antenna jacks which are connected to“RX” side of the transceiver’s main T/R switching cir-cuitry.RX ANT IN JackThis type-M jack is for a separate receive-only antenna.An antenna connected here can be used when the [RX]antenna button on the front panel is pressed.If you want to use some special kind of externalbandpass filter or preamplifier, you may connect itbetween the RX ANT OUT and RX ANT IN jacks.ANT 1/2 JacksConnect your main antenna(s) here, using a type-M(PL-259) plug and coaxial feedline for each. These an-tenna ports are always used for transmission, and alsoare used for reception unless a separate receive an-tenna is also used for the receiver. The internal antennatuner affects only the antenna(s) connected here, andonly during transmission.COOLING FANThis is a cooling fan for cooling down the Power Am-plifier Unit.Usually, this cooling fan does not rotate. However,when the temperature begins to rise, the cooling fanbegins to rotate.DC 13.8 V ...– IN JackConnect this 6-pin connector to the DC 13.8 V OutputJack on the FP-2000 AC Power Supply, using the sup-plied DC Power Cord. This connector provides +13.8V DC supply voltage for the FT-2000D.DC 50 V ...– IN JackConnect this 2-pin connector to the DC 50 V OutputJack on the FP-2000 AC Power Supply, using the sup-plied DC Power Cord. This connector provides +50 VDC supply voltage for the power amplifier of the FT-2000D.GNDUse this terminal to connect the transceiver to a goodearth ground, for safety and optimum performance. Usea large diameter, short braided cable for making groundconnections, and please refer to page 9 for other notesabout proper grounding.μ-TUNE JacksThese jacks are used for signal input/output of the op-tional RF μTuning Kit.ANTENNA (1/2) SWITCHANT “1”ANT “2”RX ANT “IN”RX ANT “OUT”ANTENNA (RX) SWITCHTX/RX RELAYTransmitter SectionReceiver Section