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RADIO BROADCAST ADVERTISER
ROBERTS
(TRADE MARK)
The only coils endorsed by WALTER VAN B. ROBERTS, E. E., Ph. D,
for the
ROBERTS CIRCUIT
Real Low Loss — For Two Threeor Four Tube Receivers. Silk Wire wound on Celoron Bakelite forms. Neutralizer included — mountings mechanically perfect. Complete instructions.
SPECIAL TYPE FOR PHONOGRAPH CABINET
Avoid disappointment, insist on the genuine
571 Hudson St. J. NAZELEY CO.
\ftrs.
NEW YORK
Wmm for joining
radio antenna and lead-in wires in one minute without solder, tape or tools.
Many other uses. A million perfect joints have already
been made with these new Wire -Nuts.
Listed by Underwriters' Laboratories. Booklet free.
Ask your dealer for Wire-Nuts. We will send 3 Wire-Nuts post paid on receipt of 25c. B. TORK COMPANY, 8 W. 40 St., New York
IIP*"
RADIO
Storage "B" Battery
Lasts Indefinitely— Pays for Itself
Volts
Economy and performance unheard of before. Recharged at a negligible cost. Approved and listed as Standard by eading Radio Authorities, including Pop. Radio Laboratories, Pop. Sci. Inst. Standards, Radio News Lab., Lefax, Inc., and other imporranl institutions. Equipped with Solid Rubber Case, an insurance against acid and leakage. Extra heavy glass jars. Heavy, rugged plates. Order yours today!
SEND NO MONEY JSSSJfSSiT^Mf Sg^
order is received. Extra Offer: 4 batteries in series (96 volts, , $12 .75. Pay expressman after examining batteries. 5 per cent discount for cash with order. Mail your order now!
WORLD BATTERY COMPANY 1219 So. Wabash Ave., Dept. 78, Chicago, 111.
Makers of the Famous World Radio "A" Storage Battery Prices 6-volt, 100 Amp. $12.25: 120 Amp. SU.25: U0 Amp. $15.00 All equipped with Solid Rubber Case.
World ftf
STORAGE BATTERIES HAPjP ,
tMDKA * WEAF> W6N * WJS g KHJ^KGO * KFAF^ WJY^WP]
(LOOK FOR THE NAME)
Greater distance and clearer recep' tion are insured by PYREX An' tenna Insulators because they stop leakage and conserve energy. Used by U. S. Gov' ernment. 45c each at all good dealers. Insist on PYREX
CORNING GLASS WORKS
Industrial and Equipment Division Corning New York
Let the non-directional
nrfirtt4 Speaker Lamp
JL J.XV/.L [Patents Pending]
bring in your Radio programs and furnish light at the same time. Many models — many styles — parchment or any color silk shades. Table lamp models $35. At your dealers — or delivered.
* THOR Radio Division
of the Golden Gate Brass Manufacturing Co. 1239-1243 Sutter St., San Francisco, Cal. (125)
Tested and approved by Radio Broadcast if