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Philco 16 - Adjusting the Philco Model 16 Receiver

Philco 16
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No.
165-B
PH I LCO
Service
Bulletin
Page 3
ANTENNll.
GROUND
Fir.
3-Bottom
View
of
Chassis,
Showin,i
Parts,
and
Position
of
Compensatin&
Condensers
Located
Under
Chassis
~A.
'""·~""-W/1.VE TRAP
IST I.F.
IITI.F.
~~l'IARY
@@5
.
2••1.R~2•0l.F.
SECONDARY
~
@
PRIMARY
3"DI.F.
)RD
I.F.
SfCONDAA~PRll'IAIW
VOLUME
CONTROL.
AND"
ON·OFF"SWITCH
4
~
3
~
2
~
l
STATION
SELECTOR
H.F.ANT.
L.F.ANT.
RANGE
2.
TOME
CONTROL
Fir.
4-Position
of
CompenutinR
Condensers
Located
Abov"
Chusis
NOTE:
DO
NOT
ATTEMPT
TO
ADJUST
the
compensating
condensers
mounted
upon
sections
3
and
'I
of
the
tuning
condenser.
These
com pcnsatinrr
condensers
are
carefully
adjuste<I,
and
scaled
at
the
factory.
Inability
of
a suitable
radio
receiver
to pick
up
signals
upon
the
shorter
waves
(higher
frequencies)
frequently
can
be
traced
to
the
aerial
itself.
A
relatively
short,
but
efficiently
designed,
aerial
will
give
better
results
on
the
short
wo.ves
than
one
which
has
a Jong
and
involved
lead-in.
Extreme
care
should
be
exercised
in
the
installation
of
the
Model
16,
that
it
may
have
every
opportunity
to
bring
in
all
the
frequencies.
Instruction
should be
given
the
customer
in
tuning
in
the
shorter
waves,
which
are
characteristically
difficult
for
a novice.
Attention
should
be called
to
the
time-difference
existing,
that the listener
may
not
listen
at
such
hours
as a
desired
station
is
n-ot
transmitting.
Much
good will be accomplished
by
a
thorough
instruction
of
the
customer.
Philco
distributors
are
prepared
to
supply
special
aerial
equipment,
especially
designed
for
reception
of
the
short
waves.
ADJUSTING MODEL
16
(Refer
to
Service
Bulletin
No.
16S-A)
These
receivers
are
adjusted
accurately
at
the
factory
prior to shipment.
Under
normal conditions
it
is
not
neccs·
sary
to
readjust
the
compensating
condensers.
If
such
adjustment
becomes
necessary,
it
should
not
be
attempted
without
first
making
sure
that
proper
instructions
and
suitable
equipment
are
at
hand.
Philco
distributors
arc
in
•
position
to
supply
both.
The
Philco Model 048
All-
p,.rpose
Set
Tester
contains
a
variable-frequency
signal
generator
covering
all
frequencies
between 105
K.
C ..
and
2000 K. C.,
nnd
is
highly
recommended
for
the
adjust-
ment
of
the intermediate
frequency
compen~atin.R:
con·
<lensers,
and
for the
adjustment
of
those
compensating
condensers
in
the
lower
frequency
circuits. Tlte Philco
Model
091
Siona/
Ge1<erator is recommended
for
the
higher
frequencies.
Refer
to
Service
Bulletin
No.
165-A
for
full-
instructions
upon
the
adjustment
of
Model
16
series.
CAUTION:
The
I.
F.
and
low
frequency
compensating
condensers only should he adjusted in emergencies.
Ex·
treme
care
should be exercised in ~djnsting the JI.
F.
circuits.

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