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Show THE MONDAY, APRIL 22 Evans Sisters Instrumental Trio. Columbia Broadcasting Company presenting7 Vitaphone Jubilee, featuring Jack Nor worth, for many years Broadway's favorite gagster, songster. Studio Program with Popular Arm. 8:00p. 7 7 :00p. m. :30 p. m. 9 :00 p. m. 9 :30 p. m. tists. Hawaiian Musical presented thru courtesy of Royal Cleaning Company. Fight Broadcast, Blow by Blow, 10:00 p. m. Metro ' 10:30 p.m. 11:00 p.m. 12:00 Mid. 1 :00 a. m. by John Driscoll. A. B. C. Chain Broadcast A. B. C. Chain Broadcast of Pacific String Quartet. A. B. C. Chain Broadcast Hour on Broadway, with the Pacific Salon Orchestra, conducted by Liborius Hauptmann. A. B. C. Chain Broadcast of the Golden Gate Gypsies. Signing off and Time Report. Nathaniel Baldwin Incorporated 7:30 p.m. 8:00 p.m. Question: What is the advantage of the condenser speaker? What are 'its disadvantages? Do you think they will supercede the dynamic? Answer: The advantage of the condenser speaker lies in the absence of a number of parts and the extreme lightness of diaphragm possible. The disadvantages are:, (a) High polarizing voltage needed; (b) Insulation losses ; (c) Diaphragm trou- :00 p. m. :00 p. m. . Broadcasting System presenting Brown University Glee Studio Program, Dress Parade, with Johnny Rosell s Orchestra, presented through courtesy of Parvers Day and Night Clothes . :00 p. m. :30 p. m. :00 p. m. :30 p. m. :00 p.m. :00 mid. Shop. Studio Program with Popular A. B. C. Chain Broadcast, ' Ar-tist-s. Metro What is meant by moment of enertia? Answer: This is a measure of the eff ectiveness of mass in rotation. In the rotation of a rigid body not only the body's mass, but the distribution of the mass about the axis of rotation determines the change in the angular velocity resulting from the action of a given torque for a given time. Moment of inertia in rotation is analogous to mass (inertia) in simple translation. Question: and Cosmo. A. B. C. Chain Broadcast of Pacific Artists Trio. A. B. C. Chain Broadcast of Ken-i- n Novelties. j B. C. Chain Broadcast, Berof Sleepy Time Program, ceuse Classics. A. B. C. Chain Broadcast of GolA. den Gate Gypsies. Signing off and Time Report. THURSDAY, APRIL 25 m. Studio Program with Deauville :00 a. m. :00 p. Club Entertainers. Popular Local Artists. Orchestra. Niel Williams Dance A. B. C. Chain Broadcast Chronicles of Katz. featuring Jack .30 p. m. . 01d xime Reque8t gedlandj Numbers. Chain Broadcast of Am- C. B. A. :00p.m. erican Opera Company, directed by Jacques Jou Jerville, presenting Rose Marie. Nite A. B. C. Chain Broadcast :00 :30 p. m. :00 p.m. :00 p. m. p.m. : 30 p. m. :45 p. m. :00 mid :00 a. :00 p. :45 p. :00 p. Club Skit. C. Cham Broadcast of NovHill elty Piano Duos by Helene and Aubrey Knoff. A. B. C. Chain Broadcast of Sextette in Brass Novel- A. B. Sax-opho- AB. ne C. Chain Broadcast of Vic Meyers Orchestra. m. Signing off and Time Report. FRIDAY, APRIL 26 m. Studio Program with Popular A tists. m. Broadcast of Kat Kabaret. stem m. Columbia B roadcastin g Sy Fro presenting Eastman Kodak 8 :30 p. m. Columbia Broadcasting System Paste presenting Dr. Wests Tooth Program. 9:00 p.m. Studio Program with Johanna Lees String puartet. 10:00 p. in. A. B. C. Chain Broadcast Metro and Cosmo. B. C. Cham Broadcast of 10:30 p.m.-- A. Woodwind Ensemble. Danc11 :00 p. m. A. B. C. Chain Broadcast, ing Strings. respond properly. We disconnect all plate leads and grid leads and leave filiment switch closed. The tube is flashed at 15 volts for 40 seconds after which we drop the voltage .through the rheostat to 7 volts and age for about five minutes. If the tube does not show signs of life after this treatment it is ready push the dynamic out of the field as yet. Difficulties that at present are very discouraging present themselves. The development of a very high insulating material would help the condenser speak. I might add that the condenser speaker has a very good high frequency response and that speech has a clarity and crispness that is refreshing. Club from Providence. 8:30 p.m. Plate voltage 90 Grid voltage 4 We assume that the tube does not I do not think the condenser will Ar-tist- s. . Question: What is a dry rectifier ? Answer: A dry rectifier is one whose action depends upon the unidirectional phenomena of copper oxide and lead. The successful advent of these rectifiers was preceded by much intensive research before economical and efficient results were obtained. Question: What are other recti fiers? Answer: There are several types, the most prominent being the: Thermionic, or vacuum tube; Mercury arc; Motor generator; and Electrolytic. Question: ate a tube? How do you rejuven . A bles. APRIL 24 Studio Program with Popular Evans Sisters Instrumental Trio. Columbia . Conducted by E. L. YEATES 23 Matson, Soloists! 10:00 p.m. A. B. C. Chain Broadcast of Enchanters Male Quartet. 10:30 p.m. A. B. C. Chain Broadcast of Histories of Paul Bunyan. A. B. C. Chain Broadcast of Am11 :00 p. m. erican Philharmonic Orchestra, with Francesco Longo, director, and Veona Socolofsky, Soloist. 12:00 mid. A. B. C. Chain Broadcast of Vic Meyers Orchestra. 1 :00 a. m. Signing off and Time Report. 7 Answer: If a thoriated filiment tube has had too much plate voltage on the plate or the filiment-ha- s been too hot while in use or if it is old it can be rejuvenated for Several more hours of usefulness. . The tube without plate or grid voltage (free) is subjected to, a flash voltage on the filiment and then an ageing voltage. Here is the general instructions for all such tubes. The filiment is flashed for 40 seconds with three times the rated voltage and then aged for about five minutes at 50 per cent higher voltage than the rated potential. Example: Type of tube 201-Filiment voltage 5 This is The Citizen's tuning in place for radio questions. All questions will be answered briefly and accurately. Address your query to Radio Editor, The Citizen, 420 Ness Building, Salt Lake City. and Cosmo. WEDNESDAY, 13 Dadio Questions - TUESDAY, APRIL Columbia Broadcasting System presenting Old Gold Program with Paul Whitemans Orchestra. 8 :00 p. m. Columbia Broadcasting System presenting Voice of Columbia, with Ise Briselli, Violinist; Benjamin Grobani, Baritone; Edna Rochstetter, Lyric Soprano. Broadcast from Kat Kabaret. 9 :00 p. m. 9:15 p. m Johanna Lee and String Trio, with Hyrum Christiansen and Myrtice 7 CITIZEN for the bone pile. -- Question: Is a 7 tube set better than a 6 tube, and is an 8 tube better than the 7 ? . , Answer: As a rule the 7 tube set has one extra R F stage which allows high gain and better selectivity than the 6 tube set. The 8 tube is varusually of the iety as more tubes than 7 in a tuned R F. system leads to complications. It is quite impossible to say which is best as the design and quality of materials determine this more than the number of tubes. super-heterody- ne Question: Mr. P. R. N. writes: Will a dynamic speaker improve my battery set? I use all U. V. 199 tubes. Mine is a 5 tube set. Answer: It is doubtful whether the addition of a dynamic speaker would be worth the expense. The better the speaker reproduces the more noticeable becomes the distortubes and tion caused by transformers. Then again, the dynamic is not noticeably better on low power than the other types of reproducers. The superiority of the dynamic lies greatly in its ability to reproduce accurately the low bass notes and these notes require a great deal of power. over-load- ed |