FRONT PANEL CONTROLS & SWITCHES

PHONES Jack

A 1/4-inch, 3-contact jack accepts either monaural or stereo headphones with 2- or 3-contact plugs. When a plug is inserted, the loudspeaker is disabled. With stereo headphones such as the optional YH-77STA, you can monitor both Main (VFO-A) and Sub (VFO-B) receiver channels at the same time during Dual Receive operation.

NOTE:

When wearing headphones, we recommend that you turn the AF Gain levels down to their lowest settings before turning power on, to minimize the impact on your hearing caused by audio “pops” during switch- on.

KEY Jack

This 1/4-inch, 3-contact jack accepts a CW key or keyer paddles (for the built-in electronic keyer), or output from an external electronic keyer. Pinout is shown on page 15. Key up voltage is 5 V, and key down current is 1 mA. This jack may be configured for keyer, “Bug,” “straight key,” or computer keying interface operation via Menu item “052 A1A F-TYPE” (see page 117). There is another jack with the same name on the rear panel, and it may be configured independently for Internal Keyer or pseudo-straight-key operation.

NOTE:

You cannot use a 2-contact plug in this jack (to do so produces a constant “key down” condition).

Microphone Connector

This 8-pin jack accepts input from a microphone utilizing a traditional YAESU HF-transceiver pinout.

DIM Switch

Press this button to lower the illumination intensity of the analog meter and the frequency display. Press it once more to restore full brightness.

ADVICE:

Menu Items “008 diSP DIM MTR” and “009 diSP DIM VFD” allow you to configure the dimming levels for the analog meter and the frequency display inde- pendently, so you can customize the brightness levels.

VOX Switch

This button enables automatic voice-actuated transmitter switching in the SSB, AM, and FM modes. While activated, the LED inside this button glows red. The controls affecting VOX operation are the front panel’s [VOX] and [DELAY] knobs. By proper adjustment of these controls, hands-free voice-actuated operation is possible.

ANTENNA Select Switch

[1/2]: Pressing this selects either the ANT 1 or 2 jack on the rear panel, and allows convenient antenna switching at the press of button. The selected antenna jack is indicated at the upper left corner of the display. [RX]: Normally, the antenna connected to the ANT 1 or 2 jack is used for receive (and always used for trans- mit). When the [RX] switch is pressed, an antenna connected to the RX ANT will be used during receive.

MONI (Monitor) Switch

This button enables the transmit monitor in the SSB, CW,AM, and FM modes. While activated, the “” icon appears in the display. Adjustment of the Monitor level is accomplished using the [MONI] knob.

ADVICE:

When using headphones, the Monitor is highly useful for making adjustments to the Parametric Equalizer or other voice quality adjustments, because the voice quality heard in the headphones is such a “natural” reproduction of the transmitted audio quality.

PROC (Processor) Switch

This button enables the Speech Processor for SSB transmission. While activated, the “” icon appears in the display. Adjustment of the Processor level is accomplished using the [PROC] knob.

ADVICE:

￿The Speech Processor is a tool for increasing the average power output through a compression tech- nique. However, if the [PROC] knob is advanced too far, the increase in compression becomes counter-productive, as intelligibility will suffer. We recommend that you monitor the sound of your sig- nal using the Monitor (with headphones).

￿When the optional DMU-2000Data Management Unit is connected, you may use the Audio Scope/ Oscilloscope page to help you adjust the setting of the compression level of the Speech Processor for optimum performance using your voice and micro- phone.

KEYER Switch

This button toggles the internal CW keyer on and off.

While activated, the “” icon appears in the dis- play. The Keyer sending speed and the CW Hang Time are adjusted via the front panel’s [SPEED] and [DELAY ] knobs.

FT-2000 OPERATING MANUAL

Page 17