Radio broadcast .. (1922-30)

452 RADIO BROADCAST ADVERTISER AT LAST/ A Real Radiophone Transmitter a reasonable price! Employs Low Power Surprisingly Long Range Easy to Build Easy to Operate For All Low Wave Work The Aero Radiophone Transmitter — Ready to Plug into Electric Light Socket Here is a low power radiophone transmitter that every true radio fan will want to own. An extremely efficient circuit, designed by some of the best known parts manufacturers, that is producing wonderful records on the government licensed low wave bands. Simple to operate, easy to build, its cost is no more than"that of a good broadcast receiver! 500 to 1000 Miles on Phone — Several Thousand Miles on Code The New Aero Radiophone is a thoroughly tried and proved transmitter. As installed at station 9DBM, Chicago, the results on 20 meters have been re- markably good. Reports varying from R-5 to R-7 have been regularly re- ceived from these typical stations: 1BBM, North Harwich, Mass.; 1ASF, Medford, Mass.; 1SW, Andover, Mass., 2BSC, Glen Head, N. Y.; 3AKS, Philadelphia, 3CE, Baltimore; 4MI, Asheville, N. C.; and 8CVJ, Auburn, N. Y. In every instance the quality of speech has been reported to be very fine. Adapted to code work, the Aero Radiophone Transmitter has produced out- standing results. From a location not of the best, all U. S. districts have been worked with CW on the 40 meter band, as well as NC5ZZ, Vancouver, B. C. Outstanding Performance Assured By Carefully Selected Parts Only the best quality parts have been incorporated into the Aero Radio- phone Transmitter. Products of the following manufacturers—all with a national reputation—are specified exclusively! Aero Products, Inc. Chicago, 111. Allen D. Cardwell Co. Brooklyn, N. Y. Herbert H. Frost, Inc. Klkhart, Ind. Polymet Mfg. Co. New York, N. Y. Silver-Marshall, Inc. Chicago, 111. Tobe Deutschmann Co. Cambridge, Mass. Yaxley Mfg. Co. Chicago, 111. Westinghouse.Micatta Chicago, 111. INVESTIGATE NOW Write for FREE BOOKLET The Aero Radiophone Transmitter is worthy of your careful investigation. Send your name and address at once for complete illustrated descriptive literature showing sche- matics, and listing parts, prices, etc. Simply ask for Supplement A. Do it today, and learn how easily you can get into the fascinating field of radiophone transmission. Address AERO PRODUCTS, Inc. Dept. 109-R, 1772 Wilson Ave. Chicago, 111. MOTP • The parts for the aAero 'Radiophone Transmitter are standard parts and are available at all [* v/ •*• •*• ,;,.,./,.,-, when completed is ready toplug into your electric light socket. All have been care fully chosen to give the maximum in transmitter performance. Complete drilled and engraved foundation units are also available. BANDBOX 1 Single Unit AC Bandbox 7O4, $95. •*•• Genuine neutrodyne fully shielded- selective. O Dry cell operated Bandbox Junior, #35. ~* Loud speaker volume—most economical. 2 Bandbox 601, #55. Operates from bat- -^ • teries or power supply units. 4 Double Unit AC Bandbox, #90 for console • installation. Adaptable to any installation. 5 New Type—D Musicone, #15. Loud speaker • leadership in popular price field since 1925. Write Dept. 20 for descriptive information. THE CROSLEY RADIO CORPORATION Powel Crosley, Jr., Pres. Cincinnati, O. Cronlfy in licensed only for Radio Amateur. Ksperimental and Broadcast Receptwn. Prices aliglilly higher in far Western *tatt*. RADIO CONDENSERS B-BLOCKS VER1TAS RESISTORS Universally accepted as standard for the construction of Radio Receiving iSets, Resistance and Power Oupply Amplifiers and Power Supply Units. Send 25$ for new Power Supply Handbook Tooe Deutschmann Co. Cambridge, .Mass. ACME WIRE CO. CJELATSIT for RADIO WIRING Flexible stranded Celatsite composed of fine, tinned cop- ; per wires with non-inflammable Celatsite covering in 9 bright colors. Strips clean, solders readily. Sold only in 25' coils, in cartons colored to match contents. Solid Celatsite has same col- ored covering, but over bus har wir«. ACME SOLID CELATSITE is a tinned copper bus bar hook-up wire with non-inflammable Celat- site insulation, in nine colors. Sizes, 14, 16, 18, 19, 30" lengths. Write for folder. The Acme Wire Co., Dept. B, New Haven, Conn.