Ameco PT Anleitung Handbuch - Seite 2

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Ameco PT Anleitung Handbuch
INSTALLAT
ION
To
install
the
Model
PT,
it is
necessary
that
observed.
the following
steps
be
carefully
DO NOT PLUG
THE
PT
INTO THE
AC
OUTLET
UNTIL
INSTRUCTED
TO
DO
SO
IN
STEP
4.
1.
Remove
the
power
plug
of
the transceiver
power
supply from the
wall
socket.
and
plug
it
into
the
AC
outlet
(marked
TRANSCEIVER)
on
the
rear
of
the
PT.
FAILURE
TO
USE
THIS
OUTLET
AS
DIRECTED CAN CAUSE
DAMAGE
TO THE AUXILIARY RECEIVER.
SEE
PARAGRAPH
4. lf
an
electric
clock
is
used
in
the
station,
it
may
be plugged
into
the clock
outlet.
(rHe cuocr
oUTLET
ls
tilRED
BEFoRE
THE
swlTcH, s0
THAT
lT
1s
ALWAYS
ENERGIZED.)
An
additional
outlet also
is
provided
for
the
second
receiver.
An
outlet
marked
SPARE
may
be used
for
a rotator;
however, under no circumstances
should
a
linear amplifier
be
powered
through
the
PT.
THE LINEAR AMPLIFIER
SHOULD
BE
PLUGGED
DIRECTLY INTO THE WALL OUTLET
BECAUSE
OF THE HIGH
CURRENT
DRAIN.
2.
Remove
the coaxial
antenna
line
from
the transceiver
and
connect
it to
the jack
marked
ANTENNA
on
the
rear
of
the
PT. The
coaxial
cable
comlng
out
of the
rear
of
the
PT,
terminating
in
a coaxial
connector, should then
be connected
to
the
transceiver
antenna
jack.
ln
those
installations
employing
a Iinear amplifier
and
the transceiver, the
PT
is
inserted
between
the linear amplifier
and
the transceiver (llOf
AETWEEN THE
AI+TENNA
AND
THE LINEAR
AMPLIFTER)
Another cable
coming
out
of
the rear
of
the
PT
is
terminated
in
an
RCA-type
phono
connector.
This
should be plugged
into the linear amplifier control circuItry
of
the transceiver and,
in turn,
the cable normally
coming
from
the linear to
the
transceiver
should then be plugged
into
the jack
marked
LINEAR KEY
on
the rear
of
the
PT
(in
those.installations
employing
a linear). ln
some
transceivers
(such
as
Swan),
a set of
terminals on
the
rear
of
the chassis
is
connected
to
relay
con-
tacts.
(Refer
to
the transceiver lnstruction
Manual.)
Remove
the
RCA-type
phono
connector from
the
control
cable
(2-conductor
zip
cord)
coming
out
of
the
rear
of
the
PT, connect
the
leads
to
the
normally-open
(during
standby)
contacts,
as
referenced
in
the transceiver lnstruction
Manual.
Some
transceivers
may
require
modification
for
external Iinear amplifier
control.
The PT
is
designed
to
work
with
the
control circuitry
employed
by most popular
linear amplifiers, that is,
the linear is controlled
by contacts normally open,
when
the transceiver
is
in
a
standby
position.
Some
of
the
more
popular
amplifiers,
employing
this
control
circuitry,
are the
Henry 2K
series, Collins
30L1,
Hammarlund
HXL-I, and so
forth.
At this point,
the
PT
unit
may now
be plugged
into
the
AC
outlet.
The
switch
on
the
front
panel
will control
not only the
power
to
the
PT,
but also
all
items
plugged
into
the rear
outlets.
This provides
for simplification of station
opera-
tion
and insures
that the
relay control
circultry will
be energized whenever the
transceiver
is in
use.
FAILURE
T0
D0
THIS WILL
CAUSE
THE TRANSMITTEB,
P0WER
T0
BE
FED
T0
THE
SEC0ND
RECEIVER, WHICH MIGHT CAUSE EqUIPMENT DAMAGE.
A resistor/fuse,
located on the underside
of
the chassis
of
the
PT,
is also
incorporated
to
pro-
tect
the
second
receiver against
such
failureg
however,
the
proper
use
of
the
PT
will
minimize
risk of
damage.
3.
4.