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RADIO BROADCAST ADVERTISER
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All tubes look alike more or less — they are easily disqualified in handling.
You are told "this" is better or "that" is better — Perhaps it is true — Perhaps not.
Supertrons
are different
You see a re-inforced interior construction.
You see the most expensive and best material — Isolantite.
You see DEFINITE QUALITY.
You are told SUPERTRON is the best — it's truth — It's Visible Truth.
Guaranteed by Serial Number.
SUPERTRON MFG. CO., Inc.
Hoboken, New Jersey
Branch Office — 30 JV7. Dearborn St., Chicago Export Dept. — 220 Broadway, X[ew Tor\ City
SOIPEIRTIRON
Vibrationless, Uniform, and Good
oAU Types oAt Public Demand Prices
SX 201 A #2.00
SX 199 2.25
SV 199 small 2.25
SV 199 large 2.25
SX 112 5.00
SX 120 2.50
SX HiMu 3.00
SUPERTHEON Half. 4.00 SUPERTHEON Full. . 5.00
In Canada slightly higher.
The loremost IndependentlUbe In {America.
K ESTER
Rosin Core
Sure $ is Safe and Simple '[_
Approved by Radio Engineers |
A Genuine Solder =
Chicago Solder Compan y 1
4222 WrightwoodAve., Chicago, U. S. A.
Originators and World's Largest Manufacturers of Self Fluxing Solder
YOUR DEALER CAN SUPPLY YOU
;i BracQeyleak jj
5: THE PERFECT GRID LEAK ^
Provides a noiseless range ^ of grid leak resistance from % 1 4 to 10 megohms. Assures % most effective grid JJ leak resistance % value for all tubes. V Small grid conden ? ser(O.O0O25)issep ^ arate. Metal parts % nickel plated. One ^ hole mounting. \
Electric Controlling Apparatus Ti J» 278 Greenfield Avenue Milwaukee, Wis. Jj
%V.V.V.W.V.VAV.V.,,W.Vi\
"A Tested and approved bv Radio Broadcast