Yaesu FT-51R, Руководство пользователя

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Visible bandwidth 10-kHz channel steps 70
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144.970 145.000 145,040
Center
Frequency
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444.925 445.000
Visible bandwidth 25-kHz channel steps 175
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Comparison of Spectrum
Scope
Visible Bandwidth
When operating from a
VFO, eight
channels
are viewed per sweep. The visible bandwidth,
however, depends on the selected channel step
size (see the comparison on the next page),
so
match the default channel steps with the ama-
teur band you are using. During memory opera-
tion, the scope shows activity of the four
memory channels above and
three
below the dis-
played memory.
The Spectrum Scope starts sweeping on the
Main Channel, so press
(BAND)
first if you want to
select the other band to view and operate on. You
can press
(BAND)
at any time to switch operation to
the sub-channel, however, the spectrum view
remains on the initial band (indicated by the
rolling bargraph segments), until changed.
for activity by either pressing
or turning the
DIAL.
Tune until you
can
see
station activity, then slowly turn the
DIAL
until a station is centered in the
channel marker (colon). To turn the scope off
and operate on the centered (and displayed)
channel,
simply press the
PTT The
spectrum scope remains off until manually or
automatically activated again.
Transmitting
Follow the procedure described on the next
page to select the desired transmitter power
level. For all
low
power levels,
"LOW"
is dis-
played at the top center of the display.
To transmit, press and hold the while
speaking into the microphone (at the bottom of
the front panel). During transmission either the
VHF
or
UHF
LED glows red, and the bargraph
meter shows relative transmitter power output.
Release the
PTT
to receive.
Note! Sub-channel receiver audio can inad-
vertently be re-transmitted along with your
voice. To prevent this from occurring, turn off
the sub-channel (press
To operate
cross-band full-duplex (for telephone-style