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RADIO BROADCAST ADVERTISER
717
For 'Better <Rjidio Reproduction
Hear this
World-Wide
Favorite
Creation of Alfred Graham & Co., England, 38 years experienced in producing loud speaking devices, Amplions lead in sales throughout the world. Hear an
Amplion— in comparison! Six models.includ
i ng phonograph units, equipped with cords and plugs, $12 up. Write for Amplion
Pedigree."
THE AMPLION CORPORATION; OF AMERICA
Suite L, 280 Madison Avenue, New York
Chicago Branch: 27-29 No. Morgan St.
Burndept of Canada. Ltd. , Toronto
Radio's Newest
'on need thil big FREE book. I
BARAWIKCO.
102-109 S. Canal St., Chicago I
Pocket Meters
Hoyt Type 51 Pocket Meter
The indispensable pocket instrument for Dealers and Radio-Owners for checking the condition of A
s up 1 and'a
peres. All scales are hand -co. libra led, resistance of meter is unusually high for this type, accuracy does not vary in extreme heat or cold.
Finished in polished nickel, of small size, convenient for handling. .^fc Price, complete with lead #3.00 ^^
BURTON-ROGERS CO.
26 Brighton Ave. Boston, Mass. National Distributors
HOYT makes a complete line of Radio Meters. Send for booklet "HOTT Meters for Radio"
and Volume Control
ESSENTIAL to thoroughly enjoy present day broadcasting. New high-priced sets feature tone control as their greatest improvement. You can have this new feature in your old set by attaching a Centralab Modulator Plug in place of the old phone plug. Takes a moment — no tools required.
Gives any degree of tone volume from a whisper to maximum by simply turning the small knob on plug. Static interference is reduced and programs come in clear and true with just the volume you most enjoy.
Order from your dealer, or mailed direct on receipt of the price $2.50,
CENTRAL RADIO LABORATORIES
22 Keefe Ave. Milwaukee, Wisconsin
Centralab Radiohms or Modulators
are standard controls on sixty 'Six
well-known sets.
Gentmlab
DIAMOND-WEAVE
(TRADE-MARK REGISTERED Aug. 4, 1925)
SICKLES COILS
Sickles Coil Set No ISA for Roberts Circuit, containing our new centertapped N-P Coil. Price $8.00.
Sickles Coils for the "Aristocrat"
Circuit, designed upon new scientific
discoveries, set highest standards of
efficiency.
COIL PRICES
No. ISA Roberts Circuit $ 8.00 set
No. 24 Browning-Drake 7.50 set
Craig Circuit 4.50 set
Acme Reflex 4.50 set
Knockout Reflex 4.00 set
Hoyt Circuit 10.00 set "Aristocrat" Circuit 8.00 set
No. 20 No. 19 No. 8 No. 21 No. 25
For the "Aristocrat," Browning-Drake, Roberts, Craig, and Hoyt Circuits
(Patented Aug. 21, 1923)
Our Coil Set No. 25 is specifically designed for the new "Aristocrat" Circuit, already very popular. Compactness of form, rigidity of construction, and the supremely efficient Diamond-Weave method of winding are well-known characteristics of Sickles Coils.
These refinements of design and construction result in low distributed capacity, low dielectric losses and large range of frequency with small variable capacity.
There are Sickles Diamond Weave Coils for all leading circuits.
Send for descriptive catalog
The F. W. Sickles Co.
132 Union Street SPRINGFIELD, MASS.
Tested and approved by RADIO BROADCAST