User's Manual

FCC ID: K6620241X50
IC ID: 511B-20241X50
Operating Manual
GAIN]; see page <<??>> for details.
If your transceiver is configured for “RF Gain” use, rotating this control fully clockwise in the
SSB/CW/Digital modes will provide best sensitivity. To reduce the receiver’s RF Gain
somewhat, rotate this control counter-clockwise slightly. You will observe an increasing
number of bars on the S-meter as you rotate the RF Gain control counter-clockwise; this
indicates increasing AGC voltage, which is causing the front-end gain to be reduced. In the
FM and Packet modes, this control will automatically be set to “Squelch,” even though the
setting of Menu No-*** is set to “RF Gain.”
If this control is configured for “SQL” operation, the FT-450’s RF Gain will be set for maximum
sensitivity in all modes, and the SQL/RF Gain control will function solely as a Squelch control.
In this case, rotate the SQL/RF Gain control to the point where the background noise is just
silenced; this will provide the best sensitivity to weak signals, while keeping the receiver quiet
when no signal is received.
Setting the Operating Frequency
1. In the “SSB/CW/DATA” modes, rotate the DIAL knob to set the frequency. Clockwise
rotation of the DIAL increases the operating frequency.
2. In the “AM/FM” modes, rotate the DSP/SEL knob to set the frequency. Clockwise
rotation of the DSP/SEL increases the operating frequency.
3. You may also use the DSP/SEL knob to adjust the operating frequency in the
“SSB/CW/DATA” modes. The DSP/SEL knob provides faster tuning, ideal for making
quick changes in frequency when you want to move across the band in a hurry. You can
then use the DIAL to make fine frequency adjustments.
4. If you press the DSP/SEL knob momentarily, then rotate the DSP/SEL knob, you can
now change the operating frequency in 1 MHz steps, allowing very quick frequency
excursions. This can be particularly helpful on the VHF and UHF bands.
5. In step 2 above, it was mentioned that tuning in the “AM/FM” modes is accomplished
using the DSP/SEL knob. By default, the DIAL is disabled in these modes; if you wish to
enable the DIAL in these modes, use Menu Mode [A&F DIAL]; see page <<??>>.
Receiver Accessories
Locking Front Panel Controls
The front panel LOCK button allows you to disable the DIAL and/or the front panel controls.
16