Harman Kardon 730

RECEIVING FM BROADCASTS
Five ba sic c on trols are used to receive
FM broadcas ts through the 730
FUNC TI ON, VOLUME, BALANCE, an
FM MUTING. Make the following
ad1ustmen s to these controls a ter
actI ating the SPKRS-1 switch:
(1] FUNCTION -FM
[2] BALANCE - Neutral ( 12 o'clock )
[3] FM MUTING - Out
[4] Tuning - Use this control to
mo ve the dial po int r
to the ex re me end of
th e dial scale
[5] VOLUME - Advance until hiss
is au di ble
[6] MONO - Out
You should now hear mild hi ssing or
r shing sound -this is tmospheric noise
p1c ke up by the tuner section. Depress
the FM MUTING button and the noise
disappea rs: it h s be en mu ted. Tu rn the
tu ning knob 11 1 either direction un ii a
broadcast signal is r ece iv ed. Th e FM
M AX Q UI ET meter should have deflected
and should now be registe ri ng the relative
quality of th e FM signal you are receiving.
No te that the me er de fl ects to the lelt in
an increasi ng deg re e as signal quality
improves. Maximum o bta inable deflec tion
to the left represents th e best listening
point. · If the broadcast is in stereo, th e red
STE RE O beacon Is lit: the beacon does
not light when an FM sta ti on is
broadcast in g monoph on ica ll y. If you have
a srereo station tu ned press th e MONO
switch in .
*Co ventional signa l streng h or cen ter
channel me ters sim ly in dicate the
s eng th of a signal an d pas s band
ccur cy. Harman Kardon·s extraordinary
Ou1e t1n g meter actually in dic ates he
si gn al-to-noise ratio or the qua lity of the
received signa l.
Th e 730 is now receiving the stereo
broadcast monophonic all y. In add iti on .
th e red STEREO beacon light is di sab led
This feature is useful f or weak stereo
stations where reception is accompanied
by a large amount of nois . The program
can be received monophon ic a ll y without
the noise. Very weak monop honic stations
may be re ceived if FM MUTING is
defeated, but tu ning fr om station to station
is no longer noise- free.
The upper dia l sca le of the 730 is
calibrated for FM broadcast station
frequencies fr om 88 to 108 MHz. Each FM
station in your area has an assigned
frequency that I alls within these li mit s. You
can use the illuminated dial pointer and
scale of the 730 to find any station in your
area if you know the assigned fr eq uency.
Similarly, the lower di al sca le is c alibrated
for AM siations In your area. which have
assigned frequencies ranging from about
550 kHz to 1600 kH z. Note that when an
AM station is being tuned in the FM MAX
QUIET meter deflec ti on is from left to
right. In other words th e best listening
point is when th e meter is as far to the right
as possible. For convenience, a third
"logging" scale with arbitrary numbers
from 0-100 is provi ded so you ca n simp lify
the ask of memorizing the vari ous
assigned frequency numbers of the FM
and AM stations in your area. Witr1 :he
logg ing sca le , a ll you need remember is
that your favorite FM station is at 80 on the
logging sca l e, sel ec t FM, tune to 80, and
listen.
The p reced ing exa mp les give you a
working fam il i ar ity with the rImary
controls of the 730.
3
Muting Adjustment
The MUTE ADJ co ntrol on t he rear
pane l controls the signal th eshol at
which muting ac tion ta kes pace when t e
FM MUTING pushbutton Is activated. The
contro l has be n set at our fa ctory to
accom mo date the maj or ity of FM
reception co d itions. If you wish to
read 1ust this control, depress the FM
MUTING pushbutton and tune away from
any statio n. Turn t he MUTING ADJ co ntrol
un til the interstation nois ( hi ss)
d is appea r s.