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RADIO BROADCAST ADVERTISER
The Radio Broadcast Knockout Four-Tube Roberts Receiver
is completely described in
Radio Broadcast's blue sprints with 16 page instruction booklet
Here are just a few reports received from, constructors who have used our
booklet and blue-printss
I enthusiastically endorse everything good said of the Roberts. It's a whiz. — Mr. J. W. Wons, 1116 Edson Avenue, Johnstown, Pennsylvania.
The purpose of this letter is to report results on the remarkably efficient Roberts Knockout receiver. This is the second one I have built, both of which contain the most efficient hookup of the kind that I have ever seen. I can best explain what I think of the Roberts by saying that I also have a very good nine-tube super-heterodyne which has been idle ever since I built the wonderful Roberts. Mr. Roberts and your magazine deserve credit and thanks of the public for presenting them with such a remarkably efficient set.— Mr. I. T. Suggs, 618 Humbolt Avenue, St. Paul, Minnesota.
Stations received on two-tube Roberts — for one month: — KRE, KLS, KZM, KLX, KGO, KPO, KUO, KFRC, KFUQ, KFNV, KFNZ, KFUU, KFUS, KWG, KFQV, KDZB, KFON, KNX, KFI, KHJ, KJS, KFSG, KFQG, KFWB, KPPC, KGW, KFOA, KFAE, KFCF, KJR, KFQW, KFAU, KDYL, KFPT, KOA, KFKX, KFRU, KOB, KLZ, KYW, KDKA, WOAW, WDAF, WBAP, WFAA, WCC, WHAA, WEBH, WQJ, WWJ, WLW, WHB, WOS, WJZ, WCAL, WCBD, WTAS, WHO, WTAM, WGY, WGR, WCX, WCCO, WMC, WSAI, CFCT, CKCD, CNRC, CFCN, CKCX, CFAC— Mr. AUan Browne, 1525 Milva St., Berkeley, California.
Interference, caused by radiating receivers, is an unnecessary evil and can be eliminated. That is one of the chief reasons why we have consistently advocated the construction of our Radio Broadcast Knockout Four-Tube Receiver. For distance and quality reception we offer to you a receiver combining the advantageous features of 1 — non-radiation by means of neutralized radio-frequency amplification; 2 — pushpull audio-frequency amplification; 3 — reflexing; and 4— regeneration. All in four tubes ! Our blue-prints with complete instruction booklet show you how to construct it. The coupon below and a dollar brings them to you.
DEALERS! We have a most attractive proposition for you. Will you let us aid you in selling stock parts for this Receiver? Make sales that stay sold.
DOUBLEDAY, PAGE & CO. Garden City, New York
Enclosed find my dollar for the blue-prints and sixteen-page Instruction Book for building Radio Broadcast's FourTube Knockout. It is understood that my dollar will be returned if the material sent me does not come up to my expectations.
Name
Address
KB — 5