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RADIO BROADCAST ADVERTISER
For Good Summer Radio Reception use
JEFFERSON*
TUBE REJUVENATOR
keeps tubes like NEW
DON'T blame the weather for all summer radio troubles. . . . How are the tubes? All tubes, remember, grow weak with use — especially in summer when operated at higher voltage. Bring them back to full efficiency with the Jefferson Tube Rejuvenator! Takes only 10 minutes; attach to a convenient electric light socket. Used once a month, it doubles and trebles the life of tubes! Quickly pays for itself in saving of tubes and batteries. It's wasteful to be without one; it's economy to own one. Fully guaranteed. At leading stores selling radio supplies. If your dealer can't supply you, send $7.50 to
Jefferson Electric Mfg. Co., 501 So. Green Street, Chicago, I1L
Makers of Jefferson Radio, Bell Ringing and Toy Transformers; Jefferson Spark Coils for Automobile, Stationary and Marine Engines; Jefferson Oil Burner Ignition Coils and Transformers.
For Home Use
Takes large or small tubes — 201.A, 301-A, UV-199, C-299
$3,000 ^10,000 a year I
Want to make big, easy money? Learn how to install, operate, repair, construct and sell Radios. Write now for facts about the amazing opportunities for Radio experts, and our special offer of a FREE 1000-mile receiving set, and how you can quickly train at home by mail.
Be a Radio Expert
No previous experience necessary. Anyone with ordinary education can now learn Radio ickly under our simplified home-study plan, e need men right now to represent our Association. Be the Radio expert in your neighborhood. Get your share of the big profits. Hundreds about you want Radios and advice how to operate. You can earn enough money right from the start to pay for course.
Nothing difficult about it. Low cost and easy terms.
FREE
l.OOO-MILE
Receiving Set
Don't miss this big special offer to supply FREE all parts necessary to construct a high-grade 1000-mile receiving set. You can sell this set alone for practically the entire cost of the course. Send for the facts now. Find out all about this big-pay field. Address Radio Association of America' 4513 Ravenswood Ave., Dept. B-7 Chicago, III*
Send for my big FREE RADIO BOOK right now! See how many wonderful money making opportunities are waiting for you as a Trained Expert in the livest, fastest growing Big Pay field in the world-BADIO!
Super d on Radio Set FREE
Long distance super-powerful selective radio set FREE to every student > who acts now! Not a cent extra charge. Write Today for full particulars and . proof that you can succeed quickly in the big pay business of Radio; also how to get i wonderful Twin Superdon set without Write at once— Now 1 No obligation. ' I. J. Mendels, American Radio Engineers '646 N.Michigan Ave., Dept. 80 Chicago
ON ONE TUBE
BIG FREE BOOKLET tells the story. California users of CROSS COUNTRY CIRCUIT hear Atlantic Coast, Canada. Cuba, Mexico, and Hawaii. Atlantic Coast users hear England to California. Our new plan makes this set easiest and cheapest to build. One hour puts in operation. One tuning control. No soldering. Any Novice can do it. BIG BOOKLET FREE or complete instructions for 25c stamps or coin. VESCO RADIO CO. Box RB-117 Oakland, California
^ Tested and approved by Radio Broadcast if