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RADIO BROADCAST ADVERTISER
325
Sheet Copper Sor Shielding
Shielding
Prevents aerial radiation and feedback.
Insulates against interference from adjoining circuits.
Improves efficiency, selectivity and tone quality.
USE SHEET COPPER
because it combines low resistance with easy working qualities.
COPPER & BRASS
RESEARCH ASSOCIATION 25 Broadway — New York
RAYTHEON
For pliable cRgception *
BIG NEW 1927 CATALOG-FREE
Dealers, Agents, Set Builders — get our
big 1927 Catalog — 225 nationally advertised lines. Lowest prices in America! Largest, most complete stock. Radio's latest developments. It's FREE— send for your copy now. AMERICAN AUTO & RADIO MFC. CO., Inc. M, McGee Street, Kansas City, Mo.
Stop It /
Complete 'Hwith tube
Last quarter — eight minutes to play — score tied — your favorite has the ball on opponent's twenty yard line — first down — ten yards to go — looks like a touchdown —
Broadcasting coming in fine — play by play — and then, — it fades away. Tubes are not lit — "A" Battery is out — rundown.
This cannot happen to those who use the
CHARGER
This device keeps the "A" Battery fully charged at all times
An absolute necessity — fool proof and dependable in every respect. Equipped with a Tungar Rectifying Tube which supplies a steady charging current to the "A" Battery when the set in not in use. When the radio is in operation the charger is disconnected by means of an automatic relay.
No Liquids Used Eliminator Connection
Sold by Authorized Freshman Dealers Only ^l.
Write for our new 48-page book illustrating and describing the entire line of Freshman Masterpiece Receivers and other apparatus
GHAS. FRESHMAN CO., Inc.
Freshman Bldg., NEW YORK— 2626 W. Washington Bldg., Chicago
•jr Examined and approved by Radio Broadcast -jc