Radio Broadcast (Nov 1924-Apr 1925)

Record Details:

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RADIO BROADCAST ADVERTISER 849 For Distance <— ' the tube is important Radio reception is not only a question of power, but of sensitivity to weak signals — and clear amplifi* cation. Radiotrons WD11 and WD12 are sensitive to the extremely feeble signals from distant stations — are silent in operation — and economical. They are famous for radio frequency amplification as for audio frequency — and detection. Get genuine WD41's or WD-12's. Look for the name Radiotron and the RCA mark. Radio Corporation of America Sales Offices: 233 Broadway, New York 10 So. La Salle St., Chicago, III. 28 Geary St., San Francisco, Cal. Radiotron REG. U, S. PAT. O.FF. Radiotrons WD-11 and WD-12 are the same except lor the base. Radiotron WD-12 has a standard navy type base. Use it to change your set to dry battery operation. Ask your dealer toda''. This symbol of quality is your protection tAc Tested and approved by Radio Broadcast if