Yaesu FT-847 handleiding
Handleiding
Je bekijkt pagina 43 van 108
41
FT-847 OPERATING MANUAL
OPERATION
RECEIVER FEATURES
NOTCH FILTER
(
DSP
)
Unwanted beat notes within the receiver’s IF filter
passband can be effectively removed by utilization of
the DSP NOTCH function. The DSP system will detect
the incoming carrier, then automatically center a sharp
notch filter to eliminate the beat note. If multiple beat
notes are present, the DSP will create multiple notch
filters to eliminate them.
To activate the DSP NOTCH filter, press the
[D. NOTCH] switch; the “
NOTCH
” icon
will appear on the display. To turn this fil-
ter off, press the [D. NOTCH] switch again.
Note: The DSP NOTCH filter should not be
used in the CW mode! The DSP system will in-
terpret a CW carrier as being “interference,”
and will notch out the incoming signal. There-
fore, as you tune the CW portion of the band
with the NOTCH filter on, CW signals will ap-
pear for a moment, then disappear as they are
notched out.
CW REVERSE
While operating on CW, occasionally you may encoun-
ter interference situations which cannot be resolved
by switching to a narrower filter or by adjustment of
the IF SHIFT control. And there sometimes are operat-
ing situations requiring a mode change from, for ex-
ample, LSB to CW; if the wrong “sideband” is uti-
lized in the CW mode, the other station may not be
easy to find.
The FT-847 can be quickly configured, so as to avoid
these problems, to utilize either “USB” or “LSB” car-
rier injection in the CW mode. To do this, while in the
CW mode, just press the [CW] switch momentarily.
The “
CW
” icon glows steadily for USB-side injec-
tion, while the “
LSB
” icon will appear to the left of
the “
CW
” icon for LSB injection. This system allows
instantaneous recognition of the current injection mode
selected for CW use.
Referring to example A, note the
presence of both a desired signal
and interfering signal. By switch-
ing sidebands (example B), note
how the interfering signal has been
avoided through selection of the
opposite sideband.
Note: When sidebands are
switched, all aspects of CW
operation are switched at
once, including the trans-
mitted CW carrier and the displayed frequency.
This avoids the necessity of making multiple ad-
justments so as to align the receiver and trans-
mitter sections for proper operation.
Bekijk gratis de handleiding van Yaesu FT-847, stel vragen en lees de antwoorden op veelvoorkomende problemen, of gebruik onze assistent om sneller informatie in de handleiding te vinden of uitleg te krijgen over specifieke functies.
Productinformatie
| Merk | Yaesu |
| Model | FT-847 |
| Categorie | Niet gecategoriseerd |
| Taal | Nederlands |
| Grootte | 17150 MB |
