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POWER
After placing the Master Power switch in the On position, the Power touch
switch on the front panel is used to turn the tuner On and Off. The LED
indicator above the touch contacts will be lit when the power is on.
FM MULTIPATH
Activating the Multipath switch converts the tuning meter from a center-
tuning meter to a multipath meter for monitoring multipath distortion. This
enables you to adjust the antenna for minimum multipath.
AMIFM LEVEL
The separate Level controls allow you to independently adjust the audio
output for AM and FM. These continuously variable, linear controls provide
adjustments of 0 to 1 volt for each output and enable you to balance the
volume level of the tuner with your other components.
ASNC
The Automatic Stereo Noise Cancelling (ASNC) circuit can be activated
when listening to a noisy FM stereo broadcast.This unique circuit senses the
amount of noise in the broadcast; if the noise rises above a given threshold, a
Schmitt trigger and a switching transistor activate the noise cancelling circuit
to provide clear reception of marginally weak stereo stations. NOTE: When
the ASNC circuit is in operation, it reduces noise on weak stereo stations
without reducing separation on strong stereo stations.
MUTE
The Mute switch is used in conjunction with the Mute Level control to
eliminate interstation noise as well as weak stations. The threshold at which
muting takes place is adjusted with the Mute Level control which is located to
the right of the Mute switch. Minimum muting action occurs with the Level
control placed fully counterclockwise and maximum muting occurs at the
fully clockwise position.
SELECT SWITCH
The Select switch is used to select the different operational modes as follows:
NORMAL-
for reception of AM broadcasts.
FIDELITY
-
for reception of AM broadcasts in Full Fidelity. Most
people assume that AM fidelity will be poor at best and,
therefore, not worthy of their attention. The medium
of AM is, in fact, capable of very good fidelity; much bet-
ter than is usually thought. Philips' Full Fidelity AM cir-
cuits provide a frequency response approaching that
of FM; typically 20 Hz
-
10 KHz
+
2db with distortion
factor of .5%
@
30% modulation and 1.5%
@
90% modu-
lation.
STEREO ONLY-
Perrr~its reception of only those FM stations which are
broadcasting in stereo. In addition, interstation noise is
automatically muted.
AUTO-
Allows reception of stereophonic FM and monophonic
FM broadcasts. A stereo broadcast is indicated by the
illl~mination of the stereo indicator light located to the
left of the dial scale.
MONO-
In this position all FM broadcasts are reproduced
rnonophonical ly.
AM 10 KHz
When the 10 KHz switch is activated, a sharp notch bridgeT
-
LC filter is intro-
duced into the IF circuit to eliminate adjacent channel 10 KHz heterodyne
whistle.
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