Technics ST-8080

In general, an antenna which has more elements
will have better directional characteristics and
signal sensitivity, and ‘‘multi-path’” reception and
other radio interference problems will be reduced.
In order to obtain the finest tone quality when listening to Note concerning multi-path reception:
FM broadcasts, an antenna which is most suitable for the Multi-path reception is the reception of two or more
broadcast signals in your area is necessary. signais from the same broadcasting station: one
To
obtain
the
best
possible
performance
from
this
unit,
received
directly
from
the
station,
and
the
other(s)
select
the
best
antenna
for
your
reception
conditions
after
received
indirectly
after
reflecting
off
nearby
studying the following information. mountains or buildings. This reflected signa! causes
MABOUT THE FM ANTENNA WHICH IS distortion in the sound by interfering with the
direct signal.
Note concerning ignition noise:
Ignition noise is noise in the broadcast which is
caused by the electric interference of the motors of
nearby automobiles or motorcycles.
INCLUDED:
If this unit is used in a place which is near the broad-
casting station and the signals are powerful enough, or
in a place such as the outskirts of a city, where inter-
ference noise is comparatively slight, the antenna which
is included with this unit may be used to obtain a certain (B) A place far from the broadcasting station where
degree
of
reception.
signals
are
weak
and
reception
is
difficult
(such
as
Connection
and
installation:
near
mountains,
large
buildings,
or
similar
ob-
Connect the ends of the antenna (the ends which have the stacles): ;
U-shaped terminals) to the FM antenna terminals of this In such a location as described above, an FM
unit. Then, with the other end of the antenna held by both antenna consisting of 5 elements.or more should be
hands in the shape of the letter ‘‘T,"” move the antenna installed: ;
around and up and down, while listening to an FM broad- Note: 19 actual number of elements required for
cast, and, when the position is found at which best recep- reception in your area will depend upon the
tion can be obtained, fasten the antenna to a wall by actual surrounding conditions. For expert
advice, consult with the store where this unit
using cellophane tape or thumbtacks.
2 P 7 was purchased.
°
Extend antenna toa ‘‘T” @ Concerning antenna connection wires and imped-
shape and fasten with cello- ance matching
ee ee (A) Antenna connection wiring
u a ’
fasten
the
antenna
as
This
unit
has
two
types
of
antenna
connection
shown
in
the
illustration
at
terminals:
300-ohm
and
75-ohm
terminals.
This
the
left.
means
that
you
can
connect
either
the
300-ohm
type
of
antenna,
or
a
75-ohm
coaxial
cable.
It
is
re-
U-shaped
terminal
commended,
however,
that
a
75-ohm
coaxial
Terminal
screws
for
cable
be
used,
rather
than
the
300-ohm
antenna,
in
Thumbtack
connection
of
included
areas where there is a large amount of automobile
antenna
traffic, near industrial plants, or near high-voltage
transmission lines, in order to lessen the effect of
these potential sources of interference noise.
Special FM antenna
(optional)
300-ohm antenna wire
or 75-ohm coaxial cable
Note: (optional)
lf terminals are short-circuited, similar condition to that .
where the antenna is not connected is established. (B) Impedance matching
MEUSE OF A SPECIAL FM ANTENNA If a 75-ohm coaxial cable is used, a matching
(SOLD SEPARATELY) transformer should be used between this unit and
@ How to select a special FM antenna the antenna, in order to convert the impedance.
(A) A place near the broadcasting station, where Note, however, that some antennas already have 7
signals are strong (within sight of the broadcasting built-in matching transformer, thereby making it
station transmission antenna): unnecessary to use another one.
If this unit is used in a place which is near the
broadcasting station, the antenna included can be
used to obtain a certain degree of reception, al- A
though it may easily be affected by automobile —— 300-ohm antenna wire
ignition noise or ‘‘multi-path’’ reception problems. _.__ Matching transformer
A special FM antenna consisting of 3, 4 or 5 ($00 ohm—-75~ohm)
elements is, therefore, recommended in order to ———-75-ohm coaxial cable Buln
obtain best reception quality. .