10
Advanced Tuner Operations
Tips for Better FM Reception
This tuner has various functions designed for better
reception. First, try to receive stations with the
standard settings. If the reception is not good, try
altering the reception quality to obtain a clear signal.
The tuner stores the following adjustments together
with the frequency when you make a station preset.
Selecting FM antennas
When you use two FM antennas, press ANTENNA to
select FM ANTENNA terminal A or B. By selecting the
antenna, you may be able to receive a station that
cannot be received otherwise.
Changing the Active Selection Mode (ASM)
Press ASM.
The ASM indicator appears in the display. This tuner's
Active Selection Mode (ASM) is factory preset to find
the best antenna attenuator (ANT ATT), intermediate
frequency band (IF BAND), and FM MODE settings for
each frequency automatically. You can, however,
choose each setting manually according to your
preference. If you don't want to use the ASM function,
turn it off by pressing ASM again.
DISPLAY
FM MODE
IF BAND
ANTENNA
ASM
ANT ATT
To set the ANT ATT manually
Press ANT ATT.
The ANT ANN indicator lights in the display. Turn the
antenna attenuator on to lower the level of the signal
from FM stations with extremely high signal output
levels (more than 70 dB). During normal use, however,
this function should be off.
To set the IF BAND manually
Press IF BAND.
The NARROW indicator lights in the display. Changing
the intermediate frequency band to “Narrow” improves
selectivity and reduces interference to make broadcasts
with weak signals easier to listen to. When the indicator
is off, the unit tunes only the stations with high sound
quality and low distortion.
To set the FM mode manually
Press FM MODE a few times to choose the reception
mode. Select either Auto stereo (no indication), HI-
BLEND, or MONO.
• Auto stereo mode receives stereo broadcasts with
strong signals. Press FM MODE until both “HI-
BLEND” and “MONO” disappear.
• “HI-BLEND” reduces noise in the high frequencies.
You can receive stereo broadcasts with less noise, but
the stereo sound quality will be slightly diminished.
• “MONO” receives stations with weak signals.
Stations will be received in monaural but with even
less noise.
Checking the signal strength
You can use the digital signal meter to check the
signal strength of FM frequencies. The display
range of the digital meter is from 16 to 70 dB (1 µV
of radio frequency voltage = 0 dB). To obtain a
signal to noise ratio sufficient for receiving a stereo
broadcast, we recommend a reading greater than
50 dB. (You can also change the FM MODE while
using the signal meter to determine the best
reception.)
1
Tune in an FM station.
2
Press DISPLAY repeatedly to display the
digital signal meter
3
Rotate the FM antenna to obtain the strongest
signal.
