Clarifier; Split Frequency Operation - Yaesu FT-450 User Manual

YAESU HF/50 mHz Transceiver FT-450 User's Manual
above the right end of the frequency display. The frequency lock may be released by pressing "LOCK"
again.
In addition to the display, the FT-450 is able to announce the current frequency through
nd
the speaker or headset. To hear the frequency, f-press the "VOICE" button (2 upper
button from the right).
Note: Small changes in the receive frequency (under 10 kHz) my also be achieved by use
of the clarifier. See section 4.1.1 of transmission for details.

3.3.1 Clarifier

The receive frequency can be set up to +/-9.99 kHz different
from the transmit frequency. This is toggled on and off by
pressing the "CLAR" button located near the bottom middle
of the front panel. When activated, the word CLAR shows
on the right side of the display with the offset shown below
it (replacing the M-TUNE, VFO-A, or VFO-B on the
display). The offset value may be changed with the "MAIN"
dial. Note that the offset control may be re-assigned to the
"DSP/SEL" knob in adaptation using the MENU functions as described later.
The system will remember the offset value, even when CLAR is turned off. To zero the offset, t-press the
"CLAR" button while the clarifier is turned on. The offset will also be set to zero if the "MAIN" dial is
inadvertently turned when the CLAR is turned off.

3.3.2 Split Frequency Operation

The FT-450 Transceiver is capable of operating on two frequencies; one
for transmission and another for reception. Moreover, there is no restriction
that the two VFOs operate on the same band or even in the same mode.
To toggle split frequency operation, press the "STEP/SPLIT" button. The
work SPLIT is highlighted in the display. The current receive VFO setup
appears on the display. If you want to keep it, press either the "A = B" or "A
/ B" button to either put that setup in the transmit VFO or swap setups with
the current transmit VFO. Then enter the transmit frequency and any other parameters
associated with it and press the "A / B" button to swap it with the receive VFO setup.
You are now ready to communicate. Whenever the Transceiver is transmitting, the frequency
display will show the transmit frequency. Otherwise it will show the receive frequency.
There is also a quick split feature in the system. If you t-press the "STEP/SPLIT" button, the
system will automatically copy the receive VFO into the transmit VFO and add 5 kHz to the
transmit frequency. You may now communicate as before.
Note: see section 5 for a better understanding of the contents of a VFO setup and section 5.5 a
more complete description of the "A = B" or "A / B" button action.
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