Philips AH673/44 Owner's Manual page 2

INTRODUCTION
You are now the proud owner of one of the finest tuners on the market; the
Philips Model 673. This high quality instrument incorporates state of the art
design technology and components to give you many years of outstanding
performance and trouble free operation.
The front panel layout is simple and straight forward using a combination of
precision .rotary controls and touch switches with LED (Lighting Emitting
Diode) indicators. f he touch switches provide smooth silent operation without
the "pops" and "clicks" of mechanical Switches. The LED indicator located
above each set of touch contacts tells you at a glance which switches have
been activated.fwo separate adjustments for AM and FM output level provide
you with the ultimate in flexibility and performance. THese variable linear
controls allow adjustment from 0
-
1 volt for each output.
The wide view dial scale features finely etched, precision graphics. The fine
resolution, large viewing length and balanced graduations along with a high
momentum flywheel provide for easy viewing and a smooth, positive tuning
characteristic.
Two tuning meters have been provided as additional tuning aids. The use of
independent center-tune and signal strength meters enables you to tune in a
station quickly and accurately. At a touch of the finger, the center-tune meter
becomes a multipath meter. The multipath meter in conjunction with the
signal strength meter allows you to independently observe optimum signal
strength and minimum multipath. This will permit adjustment of antenna
orientation for optimum signal reception. In addition to this convenient two
meter approach, horizontal and vertical outputs are available on the rear
panel for oscilloscope viewing of multipath.
Full fidelity AM has been incorporated into this tuner for performance and
response on the AM Band approaching that once thought possible.only
through FM transmission. It has often been assumed that the fidelity of AM
would be poor at best, but infact, AM in capable of very good fidelity, wide
range response and low distortion. Also incorporated is a 10 KHz sharp notch
filter which, when activated, considerably reduces any adjacent channel 10
KHz heterodyne whistle when listenin to AM broadcasts. Touch the Automatic
Stereo Noise Cancelling Switch, A
8
NC, and it activates a unique circuit
which virtually eliminates the annoyance of noisy FM stereo broadcasts and
provides clear reception of marginally weak FM stereo stations.
The Model and Serial Number of your Philips High Fidelity Laboratories
tuner will be found on the rear or bottom of the instrument. Please record this
Model and Serial Number in the space provided below.
Model Number
.
Serial N u ~ b e r
~ r 9 d L 7 3 ~ 0 ~ ~ C f
j g 7 7 3q7-3
WARNING
-
TO PREVENT DAMAGE WHICH MAY RESULT IN FIRE OR
SHOCK HAZARD, DO NOT EXPOSE THIS APPLIANCE TO RAIN OR
EXCESSIVE MOISTURE.