TX REQ Jack
When this RCA jack shorted to ground, it puts the FT- 2000 into the transmit mode, and sends out a steady CW carrier, for linear amplifier or manual antenna tuner adjustment.
TX GND Jack
This RCA jack’s center pin is closed to ground while the transceiver’s transmitter is engaged. It may be used for control of a peripheral device, most typically a linear amplifier. To enable this jack, please set Menu item “144 tGEn ETX-GND” to the “EnA” (Enable) selec- tion.
The relay circuit of the FT-2000used for this jack is capable of switching AC voltage of 100 Volts at up to 300 mA, or DC voltages or 60 V at 200 mA or 30 V at up to 1 Amp.
+13.8 V Jack
This RCA output jack provides regulated, separately fused 13.8 VDC at up to 200 mA, to power an external device such as a packet TNC. Make sure your device does not require more current (if it does, use a separate power source).
AF OUT
This gold-plated 3-contact jack provides dual-channel low-level receiver output, for recording or external am- plification. Peak signal level is 300 mVp-p at 10 k- Ohms. Main band (VFO-A) receiver audio is on the left channel (tip), and sub band (VFO-B) receiver audio is on the right channel (ring). A stereo amplifier or recorder is recommended, to record each receiver’s audio separately when dual reception is enabled (au- dio from either receiver, or both, may be used via this jack). The front panel [AF GAIN] knobs do not affect the signals at this jack.
REM (REMOTE) Jack
By plugging in the optional FH-2Remote Control Keypad to this gold-plated jack, direct access to the FT- 2000 CPU is provided for control functions such as contest memory keying, plus frequency and function control.
EXT SPKR
This gold-plated two-contact output jack provides receiving audio from the Main (VFO-A) and Sub (VFO-
B)receivers for an external loudspeaker or speakers, such as the SP-2000. Inserting a plug into this jack disables the internal loudspeaker. Impedance is 4 ~ 8 Ohms.
µ-TUNE Jack
This 10-pin MINI-DIN jack used for control of the optional RF µTuning Kit.
DMU Jack
This 8-pin MINI-DIN jack accepts a cable connected to an optional DMU-2000Data Management Unit.
PGM (PROGRAM) Jack
This coverd 9-pin MINI-DIN jack is used at the fac- tory. Please do not connect any equipment to this jack.
CAT Jack
This 9-pin serial DB-9 jack allows external computer control of the FT-2000. Connect a serial cable here and to the RS-232C COM port on your personal computer (no external interface is required).
KEY Jack
This 1/4-inch phone jack accepts a CW key or keyer paddle. A 2-contact plug cannot be used in this jack. Key-up voltage is +5 V, and key-down current is 1 mA. Plug wiring is shown on page 15, and this jack may be configured for keyer, “Bug,” “straight key,” or computer keying interface operation via Menu item “054 A1A R-TYPE.”
DC IN Jack
This 4-pin connector requires a 13.8-volt supply capable of 22 amperes continuous duty.
Typically, you will connect the DC OUT plug to this jack. For DC operation, use the optional DC Cable (P/N: T9023725) with a 25 A fuse installed.
