Yaesu FT-480R Instruction Manual page 14

PRIORITY CHANNEL OPERATION
A priority channel may be used in conjunction
with a memory channel for increased flexibility.
Here is how to set up the FT-480R for priority
operation.
(1) First program one or more memory channels
for priority use. For example, store 144.640.0
MHz into memory channel |. Set the bottom
panel SCAN switch to MAN. Rotate the main
dial to the desired frequency (for example
144.360.0 MHz).
(2) Now set the MEMORY switch to | and push
MR to recall 144.640.0 MHz and then push
the PRI (priority) switch. The display will
indicate 144.360.0 P, and every 5 seconds
the display will switch to 144.640.0 MHz
allowing you to check it for activity.
(3) If you have other frequencies stored in
memory, you may rotate the MEMORY
switch to select one for use with the priority
channel.
(4) In the FM - you may use the SCAN
switch + vd advantage during priority
operatiuu, as described in SCANNER OPERA-
TION.
(5S) If you wish to return to normal operation
from the priority mode, push the DIL button.
Now control! is shifted back to the main dial.
REPEATER OPERATION
(1) Repeater shifts of +600 kHz, and —600 kHz
are built into the FT-480R. To select these
shifts, set the MODE switch to the + or —
position respectively.
(2) To cover unusual repeater splits, you can use
the VFO A/B TXA feature.
Example: receive frequency 144.640 MHz
with 1 MHz split. Rotate the main tuning dial
to the 145.640 MHz and press the VFO A/B
TXA button on the front panel; now the
transmit frequency, 145.640 MHz, is memo-
rized. Rotate the main tuning dial to 144.640
MHz for receiving. If you close the PTT
switch, your transmit frequency will be
shifted to 145.640 MHz.
(3) A 1750 or 1800 Hz tone generator is included
with your transceiver for accessing a repeater
requiring such a tone. With the BURST switch
ON, pushing the microphone PTT will cause
insertion of an 0.5 second tone at the
begining of each transmission. When the
T.CALL switch is pushed, a tone will be
superimposed on the signal being transmitted,
for as long as the switch is held. An optional
external tone or burst generator, FTS-64E
may be connected through the rear panel
TONE IN connector.
INITIALIZING FREQUENCY/BACKUP
FEATURE
The FT-480R includes a backup feature which
will hold all memory frequencies, as well as dial
frequency, when the front panel power switch is
turned off. So long as the DC power to the rear
apron power jack is not interrupted, these fre-
quency will be held. When the power is again
turned on, the frequency and mode (memory
priority, dial, etc.) last used will be recalled, but
scanning mode is automatically reset to dial mode.
However, if the power cord is connected to 13.8
VDC circuit that is switched off along with the
automobile ignition, all memory channels as well
as the dial frequency will be reset to the preset
frequency.
SATELLITE OPERATION
The FT480R includes provision for changing the
transmitting frequency while you are transmitting
(some other synthesized transceivers lock up dur-
ing transmission). The ability to change frequency
in this manner is important during satellite opera-
tion, as Doppler shift may cause your downlink
frequency to be +3—4 kHz from a predicted value.
While listening on the downlink, and sending a
series of dots, satellite operators can usually find
themselves quite quickly.
To allow frequency change during transmission, set
the bottom panel SAT (Satellite) switch to ON.
For most satellite work on SSB or CW, the synthe-
sizer step switch should be set to Slow or Medium.
You may now close the PTT switch and vary your
frequency as desired. Note that your receiver fre-
quency will also change if you rotate the main dial.
When the SAT switch is set to ON, the + repeater
shift and receive clarifier features are disabled.
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