Controlaire SH-100 Operating Instructions Manual
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OPERATING
INSTRUCTIONS
MADE
IN
U. S. A.
SH-100
Single
Channel
SuPerhet
aNr.
-
30"lo/'/c
/1tX€P
EIACK
YELL
OI,/
Voltage
measursnents
taken
wjth
Heathkit lM-13'
V.T.V.M.
5
voll,
minus DC
scale. Conmon
lead to
plus
3 volts
re-
ceiver
battery.
Receiver
idling'
No
signai
from trans-
mitter.
Note'divided circles
on diagram,
top
no voltage
measured,
lower
No is circuit
board
hole that
identifies
copper
iind to
which
place
DC
probe.
Normal neasurement
can
vary
plus
or
rninus 20%
due
to component
tolerances.
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BATTERIFS
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CONTROLAIRE SH-1OO
OPE
RATING INSTRUC
TIONS
The SH-100 is an
all-transistorized
superhet receiver
with its
output terminated in the
use
of a
S.P.D.T.
relay,
This feature allows
for
simple application to
pulse
or
escapement
type
of control
systems. Unlike
earlier
single
channel
superhet
receivers, the SH-100 exhibits acertain
immunity
to
the R.F. noise
interference
generated
bythe
electrical control
system
of
your
aircraft.
This is
accomplished by
a design
feature that allows extreme
signal clipping
to take
place
within the receivers I.F.
section. By this elipping
action
noise
of reasonable
amplitude is eliminated from
appearing
in the I.F.
carrier.
If
noise
does not appear, it
cannot
be detected
as an interference signal to
actuate
the
receivers
relay.
No
superhet
can reject
any and all
conditions of noise
interference,
holever,
the SH-100
presents
a definite
improvement. Other design features include temperature
compensation
from
0
degrees to 130 degrees F.,
a
strong
protective
metal case
and
3 volt
operation.
Receivers are
available in
any
of
the following frequencies.
26.995mc, 27.045me, 27,095me, 27.L45mc, 27,L95mc.
Special
units
on 6 meters
at
52 and 53mc are available by
special order.
TRANSMITTER REQUIREMENTS
Due to the extreme clipping
action
that takes
place
within
the receivers I.F. section, the
SH-100 must
be operated
with a companion transmitter of
high modulation
per-
centage. Minimum is
90/o
and the best 100/0. If trans-
mitters
of
less
than
90/o
are
used
you
may find a nulling
or no
signal
condition exhibited by the receiver at
varied
distances
from
the
transmitter. For this reason
do
not attempt to operate
the SH-100
with
either
the
Controlaire multi
or single channel
"MuIe"
transmitters.
These units,
while
perfect
for other Controlaire re-
ceivers,
have 85/o modulation and, in most cases, will
not
operate the special
purpose
SH-100. For
bestresults
we recommend
the
new
Controlaire "Mark
II Mule".
This
is
an
all-transistor unit
and
has been
designed
specifically
for
the SH-f00. Other transmitter require-
ments
ate
a
radiated
RF
output
in excess of 75
milla-
watts and a
tone frequency falling
between 400 to 1200
C.P.S.
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