. QST . RCA INSTITUTES, INC. A Service of Radio Corporation of America350 West 4tli St., New York 14, N. Y. OFFERS COURSES IN ALL TECHNICAL PHASES OF RADIO, TELEVISION, ELECTRONICS Approved for Veterans Write Depl. ST for Catalog. for everything In Eleclronlcsl 1440 page MASTER • Oetoiled specs • 85,000 ilems • Full descriptions 8,500 illusFully indexWgt. 6 lbs List $ low OS $ at distributon UNITED CATALOG PUBLISHERS, INC., 110 Lofayelt* St., N. Y. (. 13 WESTERN DISTRIBUTORS SALINA, KANSAS Crossroads of the Nation •^ A complete and prompt ham sup-ply house. ■^ Nationally accepted br
. QST . RCA INSTITUTES, INC. A Service of Radio Corporation of America350 West 4tli St., New York 14, N. Y. OFFERS COURSES IN ALL TECHNICAL PHASES OF RADIO, TELEVISION, ELECTRONICS Approved for Veterans Write Depl. ST for Catalog. for everything In Eleclronlcsl 1440 page MASTER • Oetoiled specs • 85,000 ilems • Full descriptions 8,500 illusFully indexWgt. 6 lbs List $ low OS $ at distributon UNITED CATALOG PUBLISHERS, INC., 110 Lofayelt* St., N. Y. (. 13 WESTERN DISTRIBUTORS SALINA, KANSAS Crossroads of the Nation •^ A complete and prompt ham sup-ply house. ■^ Nationally accepted brands ofparts, tubes and equipment. ■^ Trade-in — liberal time and downpayment plan. HAM STAFFED: W0MBH W0LXA W0ILB RED ROOM DISPLAY COACH K0AST New Apparatus Radioteletype Filter Set One of the stumbling blocks to RTTY opera-tion has been the receiver-converter filters used toseparate the mark and space signals, andamateur scrounging of one type or another hasusually been the only recourse. This situation hasbeen improved by the recent availability of theBF-Ml and BF-Sl Radioteletype Filters. Thesecompact {4% by 2^ by 2>2 inches high) unitshave the characteristics shown in the manufac- 605S5045403530252015
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectradio, bookyear1915
