Radio Kits, Inc. 3W10A Schematic

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Product Information:
Model:3W10A
Manufacturer:Radio Kits, Inc.

Schematics Content:

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PAGE 19-4 RAmo Kms _ _ _ _
MODEL 3W10A RADIO KITS, INC.
(C)John F. Rider

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___ RADIO KITS PAGE 19-
RADIO KITS, INC. MODEL 3WlOA
(C)John F. Rider

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RADIO KITS, INC.
wig d : - ug.: '|
||~|I| IU! ill =f ~= I >>; 1
(C)John F. Rider

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RADIO KITS PAGE 19-7
RADIO KITS, INC. MODEL 3N1OA
SERVICING NOTES
All specifications and meeeuremants based on 117 volts, 50 cycles, and all readings based an a
20,000 ohms per volt meter. All readings are taken with vvlume control (switch No. 2) in maximum
clockwise position. Apply the lowest signallevel from the signal gmerutor.
Output: 50 mv into a 5.2 ohm voice coil impedance.
Approximate reading 0.4 volt.
LF. ALIGNMENTx With signal gmerator, set a 455 KC, apply sigxal through a .1 'AFD condenser dummy
to R.F. grid of convertor (lR5) or the stator of RF section of the variable condenser (condenser must
be fully mashed). Peak LF. trimmers l,2,F,4, (tcp view diagram) to give maximum reading on output
meter connected across voice coil. (Note: If for am possible reason the signal does not come through
indicating the receiver is wav out of alignment., apply _the signal to the grid of the LF. Amplifier (1T4)
and tune signal in by trimmers 5,4 of second IF. transformer. Peak for maximum and once this stage is
tuned, repeat above procedure) .
R.F. ALIC-NP|E!I'l': With sigxal generator, set at 1400 KC, apnly signal through a dummy antenna (200 mmf
condenser) to the antenna loop mire. Set dial of receiver to 1400 KC and peak trimmers 5 & 6 to give
maximm reading of output meter. Then set signal generator at 600 KC end tune receiver tc *SOO KC mark
un dial: This setting should fall on calibrated point.
Generator mmap Freq . Adj. utput Sensi tiviiq
Connection Ant. Trimmers uv.
smwr 101-gs .1 urn 455 no 1,2,s,4, nu. 120 -me
section -
"mg ?P?? ??"d' -4 use Purnsvs
mama zoo mmf' 1400 xc 5 e 0 max. so
loop wire cond.
Antmne Variable
loop wire 200 mm! 600 K0 plates Max. 150
sammy Conplsmmm 2-4% Volt "A" Batteries co e u
EVGPORW Nu. 746 or equivalent PULUEV _?*
2-45 Volt "B" Batteries
VOLTAGE HEASUREGENT
All reading in AC-DC position of power selector svdtch with 20,000 ohms per meter. Readings takm are
referred to ground.
'?T'i? AC nc nzsxsmucn IN onus
FIN' nc RESISTANCE IN onus PIN no RESISTANCE IN mms
$13! DC m;s1s'u.Nc1-1 IN onus PIII DC B.ES1bTANCE in or-ns
(C)John F. Rider

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