JEWELL Pattern 444 Service Manual

e..A.DIO SERVICE ILLIŒAL
e
Its
The Most Complete
Set Tester Ever BO
The Jewell Pattern 444 Set Analyzer tests every circuit in eny
set, including those using variable mu, and output and radio e-
quency pentode tubes.
Pattern 444 Set Analyzer, complete with all
accessories. Jewell Data Service and data pad.
List Price $ 112.00 Servicemen's Price $84.00
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An improved switching system for selecting circuit tests separates
all A.C. and D.C. tests. This speeds testing and greatly reduces>
the possibility of securing incorrect readings.
In addition to all the voltage and current measuring ranges beg
available at time saving pin jack terminals, a triple range output
meter circuit and a triple range ohmmeter are provided for use i.
set servicing. A.C. current ranges up to 8 amperes are provided it
for servicing other household appliances such as vacuum cleaners,
oil burners, and electric refrigerators.
Every possible feature has been incorporated that will reduce
wear and make the instrument more sturdy. The elimination of
binding posts which loosen and break, non-shatterable glass scaie
covers, and a test plug and cable that are separable from the ana-
lyzer by a multi- plug at the instrument panel are typical examples.
The Jewell Analyzer Data Service is more complete than ever
this season, and adds greatly to the value of this instrument.
A Portable Oscillator That's Reliable!
Pattern 560 Test Oscillatoi, complete with
two 230 tubes, batteries, and portable triple-
range output meter.
List Price $ 102.00
Servicemen's Price $ 76.50
Pattern 560 Test Oscillator without output
mete,
List Price $82.00
Servicemen's Price $ 61.50
Pattern 559 Output Meter only.
List Price $ 15.00
Servicemen's Price $ 15.00
Radio frequency circuits, whether in a tuned- radio- frequency or
super- heterodyne receiver, must be accurately adjusted to obtain
the greatest sensitivity and selectivity.
The Jewell Pattern 560 Test Oscillator and 559 Output Meter
are designed and built to meet the needs of the radio servicemen.
The simplicity of operation, hair line accuracy, and assured relia-
bility are unequalled features of this portable test oscillator.
The Jewell Pattern 560 Portable Test Oscillator covers the com-
plete broadcast band from 550 to 1500 K.C., and the complete
intermediate frequency band from 125 to 185 K.C. The Jewell
Test Oscillator is adequate for testing and adjusting every super- het
receiver built today and provides for future design in that it covers
the band from 125 to 185 K.C.
Write for a bulletin describing the
complete Jewell Radio Service Instru-
ment Line. You can pay for them
from your extra profits.
sZi
Jewell Electrical Instrument Co.,
1642-V Walnut St., Chicagoei
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