Grundig R45 a Bedienungsanleitung Seite 13

FM Muting
With the toggle switch O in its top
position, interstation noise will be muted
when tuning on the FM band. It may be
found that it is only possible to listen to
very weak FM stations when the muting
circuit is switched off (bottom position of
switch O)•
FM Field Strength Meter
The meter O serves as a tuning meter
and a field strength meter and is
particularly useful when using a "steerable"
aerial system.
It can be used to get information of relative
strength of stations and their signal/noise
ratio — the sensitivity of the receiver is
best checked when switched to mono
with the AFC and muting circuits switched
off as this allows for the reception of
programmes whose signal strength is .only
slightly greater than the noise level.
Normally for good "noiseless"
reception a signal strength of at least ten
times that required for mono reception is
needed.
With this receiver when the aerial signal
falls below 80 YV the reception changes
from stereo towards mono (the stereo
indicator lamp remains on). The result is
reduced separation but less interference
(noise). Therefore the receiver adjusts
automatically when receiving Oistant
stations.
7
4 6
8
o
TUNING
The signal levels quoted are approximate.
MULTIPATH Indicator O
When receiving VHF programmes,
distortion can occur
Signals being received
(MULTIPATH reception). If this problem
exists the MULTIPATH indicator will light
up, the aerial should be re-positioned
for a better signal (possibly using an
aerial rotator) or another station carrying
the same transmission
Stereo Balance
The balance control O is used to control
the intensity of the volume
loudspeaker and enables
sate for effects
The control should
and
a monophonic
to come from midway between the
two loudspeaker
Tone Filter
stereo
A single frequency band can be selected
with the tone filter switch O. By using the
control below, the level of the frequency
band selected can be increased
reduced to compensate
acoustic'. This adjustment is carried out
in addition to the normal
using the bass and treble controls @ O.
This facility is useful with microphone
operation and can be used to reduce
acoustic feedback
when speaking
Linear/Loudness
With the linear / loudness switch O in the
top (LIN) position, the frequency
of the unit is "level" throughout
frequency range. When the switch
"loudness" (CONT) position a degree of
bass and treble boost is applied at low
ho
listening levels in order to compensate for
deficiencies in aural perception.
volume levels the frequency
returns to "linear",
the switch iS in.
Noise Filter
Operation of the switch
noise filter into the circuitry, and the filter
produces a rapid cut-off above 6.8 kHz. This
may be very useful when playing records
with high surface
due to reflected
at the aerial
selected.
from each
you to compen-
caused by room acoustics.
be adjusted so that
programme source appears
units.
or
for room
tone adjustments
or to reduce sibilance
close to the microphone.
Switch
response
its
is in the
At high
response
no matter what position
connects the
noise.
Record Reproduction
For connecting a record player with
magnetic pick-up, socket on the rear of
the set is provided. The set incorporates
separate pre-amplifier / equalizer so that
a separate equalizer is not necessary.
connecting a record player with magnetic
system and combined preamplifier
equalizer or ceramic / crystal cartridge,
the sockets TB 1 and TB 2 are provided.
For record reproduction, press the
corresponding key O
(TA, TB 1 or TB 2 resp.).
Tape Recorder Connection
The socketsoand O (TB 1 and TB 2)
permit to connect two separate
cassette recorders for recording
playback For playback press the
corresponding key O (TB I or TB 2)
on the front of the set. It is also possible
to rerecord tapes from one machine
the other. Please refer to the separate
operating instructions supplied with the
tape recorder.
Via-tape Monitoring
This set is provided with a monitor socket
(pos. O) which permits via-tape monitoring
when recording onto a tape machine being
designed for monitoring operation. Connect
the Monitor socket with a standard
(e. g. GRUNDIG lead 242) to the corres-
ponding socket on the tape machine. If
you now set the Monitor switch O to its
top position, the recording is continued
without interruption, but the receiver
amplifier is connected to the playback
contacts of the Monitor socket and you
will hear the just recorded signal. By
setting the Monitor switch repeatedly to
its top and then to its bottom position,
you can compare the just recorded
programme with the original programme,
and thus check the recording.
a
For
/
tape /
and
onto
lead
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