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OUT DOOR AM ANTENNA
LOOP AM ANTENNA
EXCLUSIVE NOTES FOR THE U.S.A.
Outdoor Antenna Grounding
If an outside antenna is connected to the receiver/tuner, be sure the an-
tenna system is grounded so as to provide some protection against vol-
tage surges
and
built up static charges. Section 810 of the National
Electrical Code, ANSI/NFPA
No. 70—1978, provides information with
respect
to proper
grounding
of the mast
and supporting
structure,
grounding
of the lead-in
wire to an antenna
discharge unit, size of
grounding conductors,
location of antenna-discharge
unit, connection
to grounding electrodes, and requirements for the grounding electrode.
See figure.
DOWNLEAD
OR
_-LEAD.IN WIRE
(a, b)
GROUND
.^
|
CLAMP
MAST
GROUND
WIRE (a, b)
TO TUNER
GROUND
WIRE
INS ANTENNA
DISCHARGE
S
UNIT (c)
GROUND
^ CLAMPS
a.
Use No. 10 AWG
copper or No. 8 AWG
aluminum or No. 17 AWG
copper-clad steel or bronze wire, or larger as ground wires for both mast
and lead-in.
c.
Mount
antenna
discharge unit as closely as possible to where lead-
in enters house.
—
SUITABLE GROUNDING
ELECTRODE
DRIVEN
8' INTO THE EARTH
(244 METERS)
SWITCHES AND CONTROLS
(1) Power Button
position,
interstation
noise
generated
when
tuning in an FM station will be reduced.
(4) Signal Strength Indicator
The
5
LEDs show incoming signal strength;
the
receiving
condition
is optimal
when
all
This button
turns on the unit. The LED indi-
cator above it will glow when
the power is on.
Press the button a second time to turn off the
power.
(2) Dial Scale
The
dial
pointer
LED
indicates
tuning
fre-
quency.
(3) Stereo Indicator
Glows when stereo broadcasting signal is tuned
in.
Note
that
when
stereo
signal is very weak,
the unit
will not give stereo
reproduction,
and
the indicator will not light up
5
LEDs are illuminated.
(5) AM/FM Selector
Push to either AM or FM position depending of
which broadcasting you wish to listen. (In case
of FM/MW/LW
version
model,
push
LW/MW
button to select either LW or MW broadcasting.)
(6) FM Mute Off/Mono Button
When
this button
is pressed
to ON, any FM
broadcast
is received
monaurally.
Be sure to
leave the button in the released (OFF) position
during normal stereo FM reception. In the OFF
ROTEL
Avem STERFO TUNER
AT-B30
"ou
BOD ano
1009
WUD
400
600
(7) AM Filter Button
(8) Tuning Knob
AM
TUNING
BAND
MOOR
FILTER
FM
sTEDFO
ore
a
000
MONO
AM (MUTE OFF
ON
æ
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