FT-2000
Operating Manual
Vertex Standard Co., Ltd.
68
“PROC” icon will turn off, confirming that the Speech processor is turned off.
Advice:
Excessive advancement of the [COMP] knob will result in a degradation of the
transmitted signal’s signal-to-noise ratio, thereby reducing intelligibility at the
other end of the circuit.
The Transmit Monitor is very helpful way of verifying proper adjustment of the
compression level. Pressing the [MONI] button then adjusting the [MONI] knob for
a comfortable listening level while you are transmitting, you will be able to hear the
difference in sound quality as you make adjustments.
The [RF PWR] knob still controls the RF power output, whether or not the Speech
Processor is engaged.
When the optional DMU-2000 Data Management Unit is connected, you may
observe the effect of your [COMP] level adjustments by viewing the wave-form on
the “Oscilloscope” page.
Adjusting the SSB Transmitted Bandwidth (SSB Mode)
For transmission on SSB, a default bandwidth of 2.4 kHz is provided. This bandwidth
provides reasonable fidelity along with good talk power, and is typical of the bandwidth
used for decades during SSB transmission. However, the bandwidth may be varied by
the operator, so as to provide different levels of fidelity or talk power, according to your
preferences. Here’s how to adjust the transmitted bandwidth on SSB:
1. Press the [MENU] button to engage the Menu.
2. Rotate the Main Tuning Dial knob so as to select Menu item “082 A3J TX BPF.”
3. Rotate the [SUB VFO-B] knob to select the desired bandwidth. The available
selections are
3000/50-3000/100-2900/200-2800/300-2700/400-2600, and the default is 300-2700
Hz.
4. Press and hold in the [MENU] button for two seconds to save the new setting and
exit to normal operation.
Advice:
The Transmit Monitor is very helpful way of verifying the effects on fidelity of
changing the bandwidth. Pressing the [MONI] button then adjusting the [MONI]
knob for a comfortable listening level while you are transmitting, you will be able to