Garod Radio Corp. 1039 Schematic

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Product Information:
Model:1039
Manufacturer:Garod Radio Corp.

Schematics Content:

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Page 1:

GAROD PAGE 11 9
GAROD RADIO CORP. Schmatif ' 049
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(C)John F. Rider, Publisher

Page 2:

GAROD PAGE 12-13
MODELS 599, 4990;
GAROD RADIO CORP
GAROD MODELS 599,4990| 1059,1049; 15403 5109; 4125; 4124; 4410
ALIGNMENT
It is important to remember that ln receivers of this klnd which are equipped with automatic volume
control it is necessary to use the minimum possible signal from the signal generator, otherwise the
A V C action wlll tend to nullify the variations in output as the trimmers are adjusted
I F Adjustment The signal generator is set at(R)455 kc and is connected through a 5 mmfd condenser
to the grid of the first detector (SKB) with the hand switch set on Broadcast", the pointer set
at 550 kc and the receiver volume control at its maximum position, the I F trimmers are adjusted
for maximum output These trimmers may be found on tops of the I F transformer
g fl Adjustment Turn the dlal control knob so that the condenser plates are
Set the band switch to ba.nd #1 The signal generator should be connected to the
post through the dummy antenna consisting of a 250 mmfd mica condenser and a 400
resistor The oscll tor trimmer condenser should be opened to minimum capacity
shield cans
entirely out of mesh.
short antenna binding
ohm non inductive
and the signal gene
rator then set to 2 gacycles The oscillator trimmer is then increased ln capacity until maximum
response is obtained 'mo responses are possible and it is important that the high f quency res
ponse (oscillator trimmer low capacity) be used The signal generator is then set tc?9 MC d the
variable condenser turned until a response is obtained The pointer should coincide with Q39 PIC
mark on the dial The antenna preselector and first detector trimmers are then adjusted in the order
named, for maximum output The variable cond ser should be rocked slightly during this last adjust
ment The signal generator is now set at 7 c and the signal tuned in on the dial he
padder condenser for this band is adjusted for maximum reading of the output meter while the gene
rator runing condenser ls rocked slightly to right and left The high frequency adjustment should
tnen be rechecked
and #2 The band selector switch is set ln position for operation on short wave band #2 The varl
able condenser is opened so that the plates are completely unme ed and the oscillator trimmer is
opened to m1nlm1m1 capacity The signal generator is set to 7 c and the oscillator trimmer condense
is increased in capacity until a response is heard Two responses are possible and it is important
that the higher frequency response (osclllator trimmer low capac1ty)`ce used Set the signal generator
at 7 mc and turn the tuning control until a response is indicated on the output meter The pointer
should now coincide with the '7 mc marker on the dial The antenna pr#-selector and first detector
trimmers are then adjusted in the order named for maximum output After high frequency adjustments
have been made set the signal generator at 2 5 mc and turn the variable gang condenser until a res
ponse is observed Adjust the padding condenser for this band for maximum gain while rocking the
tuning condenser slightly to the right and the left The higher frequency adjustment should then be
rechecked
mmm f this band should consist of a 250 mmfd condenser only
Broadcast Band The d ig? 2 the band switch set at broadcast position The variable condenser
or is set at
should be opened so that the
for maximum response on that
receiver til a response is
the dial
The signal generator ls then
The padder condenser is then
plates are entirely out of mesh The oscillator trimmer is then adjusted
frequency (l620kc Set the signal generator at 1500 kc and tune the
indicated The dial pointer should coincide with the 1500 kc mark on
set at 600 Kc and the receiver tuned untxl a response is indicated
adjusted for maximmn gain while the tuning gang condenser is rocked
slightly to the left and right The 1500 kc adjustment should then be rechecked
worms 1049, 1540, 4124, 4410 me 4990 (cum)
3 ave Band, The band selector switch is set in position for operation on the long wave band
The receiver and generator are both tuned to 300 kc and the oscillator trimmer 15 S<13"St9d f??` maximum
response. The antenna and first detector trimmers are adjusted in the order named for maximum output.
50 k d the si nal ls tuned ln The long wave padder condenser
l t is then set at 1 c a.n 8
?sleai?5;:edg?;l;r;a;1?mlm response while the gang tuning condenser is rocked slightly to the left and
right The 300 kc adjustment should then be rechecked
THIS NOTE REFERS '10 MODELS 399,499O, 1059 1049, 1540; and 3109
S T0 MODELS 1039 1049; 1540: 3109.
(R)pR}i;FrxE1;djust the antenna and detector trimmers in the order indicated for maximum output
and : A V
(C)John F. Rider, Publisher

Page 3:

MODELS 599, 1039, 1049,
4990; 4123, 4124; 4410 GAROD RADIO CORP.
Sm' 1 _5zo>>vc>>1sr Fannie
V 5 '"'_"" 55593 moons J_9s,4s.9o
(C)J'ohn F. Rider, Publisher

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