Technical information
AIRLINE
62.89
Insensitive
Last
i.f. transformer
defective.
Replace
with
part
#P5127;
other
transformers
unsatisfactory.
AIRLINE
62.99
Iuoperative
Poor
32 oscillator
tube.
Try several
tubes.
A slight
re-
adjustnrent
of
plate
attd
screett
voltages
is
sontetirttes
helPful.
A|RLINE
62-103
Weak,
low
volume
shorted
or
open
screen
bypass
or
open screen
-re-
sistor.
Inoperative
open
415
ohm
flexible
wire-wound
resistor,
shorted
screen
bypass
on
6D6
r.f. and
det'
stages.
AtRLINE
62-13.{
Internrittent
high
pitched
lvhistling
tlefective
oscillator
gricl leak
This
is
a
100,000
ohur
resistor'
AIRLINE
62-l't9
Distortion
usuallY
caused
bY
i.f.
oscillation.
Adjust
i.f.
trimmer
for sensitivity
and
stability
rather
than
any
specific
itequency.
Shielding
grid
leads
on 32
and
34
ttrbes
may
Prove
beneficial.
Generally
better
results
are
obtained
when
the
34 second
detector
is
re-
olaced
bv
a 32
or
lB4-
When
this
is
done
the
"C"
bias
aPPlied
to
the
de-
tector
should
be
reduced
to
6 volts.
AIRLINE
62,
!23,
131,
133,
L42'
L44.
Failure
to operate
when
new
and
in
use
only
a short
time
. .
. .
Most
likely
trou-
ble-
is defective
two-section
armored
wire-wound
resistor.
Replace
with
a
l-watt,
25,000-ohm
and
a
z-watt,
16,000-
ohm
type.
(LF.
456 kc.)
A|RLiNE
62-t77
Dead . . .
check
for shorted
.01
mfd.
coupling
condenser
between
687
plate
and 6F6
grid.
Loud volume
with double
humP
reso'
nanc€ curve
.
rePlace
300,000
ohrn
resistor
between screen
grid
of
6F6
and
687
tube.
AIRLINE
62-293
Intermittent
.
. . .
replace
black and
white
striped
u'ire connected
between
terminal
8 of the
6C5
nearest
{ront
of
set
and terminal
of band
srvitch.
AIRLINE
62-25,1
Intelr-nittent,
"B"
batteries
discharge
rapidly
. .
. .
inspect
speaker
leads
for
shbrt
to
frame.
Unsolder
leads
and
cover
l'ith
spaghetti
tubing.
AtRLtNE
62-307
Intermittent,
noisY
rePlace
meg
volume
control
part
#101-46.
Os-
cillator
dead
.
rePlace
mica
con-
denser
from
grid of 6C5
oscillator
to
coil
terminai.
z
RADto
RETAILING'5
ttSerrorioe
Rider
Manuals?
TellYou..."
t'Bo"*
in the
earlv
dals ol
simple
re{enerative
sets
there
was no
need
for
Ri<ler Manuals.
But
when
reflex
cir-
cuits,
stabilized
T'F:R'
stages'
super'
hets
and
compact
construction
appeared,
the
serviceman
needed
more
than
just
a diaAram
to
do
profitable
work.
Then,
",
to"dry,
he
needed
the
comPlete
ser-
vicin(
information
that
only
Rider
Man-
uals
could
give
him.
He
needed
com'
olete
and
dependable
data on
aliAnment,
i-F
peaks,
parts lists
and
parts
values,
voltage
ratin{s
of
condensers.
wattage
ratinf,s
of
resistors,
coil
resistance
data,
and
ill the
other
information
which
is
vital
if
you
are
to
know
iust
what,the
manufaciurer
put
in that
receiver.
No'
where
efse
can
you frnd
all
in
one
lluce
the
essential
servicin{
information
con'
tained
in
the
eleven
volumes
of
Rider
Manuals.
Nowhere
else
can
You
so
easilv
and
so
quickly
{ind
just
what
vou
need.
Take
the
index
-
it's separate
la.d
eten
cross-indexed
so
you
can
find
thinAs
{aster.
"I'm
tellin{,
You,
there
never
was a
service
that
compared
in
completeness'
clearness
and
value
with
Rider
Mah-
uals.
And.
with
the
complicated
sets
they're
turninE
out
today,
there
never
was a time
when
thev
were
so-just
plain
necessary.
Proof
is
that
1'ou
will
hnd
practically every
successlul
service'
man in
the
country
has
a
complete
set
of
Rid"t
Manuals-
Take
mY
advice-
.lont,
,r,
to
'{et
bv'
with
just
a
few
of
them.
bet
them
all.
Remember'
har''
inE
tt
"
information
vou'll
do
better
work-do
it
faster-and
make
more
money."
YOU
NEED
Att
RIDER
MANUATS
Volume
XI
X
IX
vill
vil
VI
IV
Price
Covering
$
10.00
up
to Moy'40
$10.00
1939-40
| 0.00
I 938-39
10.00
1937-38
10.00
1936-37
7.50
1935-36
7.50
I 934-3s
7.50
| 933-34
7.50
1932-33
7.50
|93l-32
7.50
|
920-3
|
ill
tl
I
voL:^;;;
I
#ffi
r r ..1
-u.i$91
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