Newspapers / The Johnstonian-Sun (Selma, N.C.) / June 12, 1930, edition 1 / Page 2
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1 HE JOHNSTONIAN—SUN, SELMA, N. C. Radio Theory And Practice (By J. J. Stancil, Kadio Technician, Member Radio Association of Ameri ca, Member Co-Operative Radio Doc tors, Inc., Custom Set Builder, Grad uate National Radio Institute, Grad uate Radio Training Institute and al lied courses.) Push Pull Power Amplification (By J. J. Stancil, Radio technician, Member Radio Association of Ameri ca, Member Co-Operative Radio Doc tors, Inc. Custom Set Builder, Grad uate National Radio Institute, Grad uate Radio Training Institute and Allied Courses) In the modem radio of the present time, practically all use push-pull audio amplification with some of the KENLY FOUR OAKS (By MELBA WATSON) (By MRS. ALTON MASSENGILL) are mostly in favor of push pull audio amplification, there is some points against its use which might be incorporated in this article. Any tube of the power tube family, when properly wired in to a circuit, will give APPARENTLY the same re sults as when used in push pull ar rangement. I miiean by this, that it will give ample volume, distinct and readable’ signals and only those who have a good ear for distinction can readily appreciate a very grant difference between the quality of the two signal outputs. Another feature that might be called favorable to the straight audio - system is, it requires less .expensive units and is easily a cheaper system to build and saves the price of one tube. I have built The Junior Sunday School class of Mr. Jesse Kieene, of McCo , . ., the P. W. B. Church enjoyed a pic- is spending some tirfie here wRh rel- nic at Holt Lake Thursday. They motored there in the afternoon, leav ing Kenly about 3:00 o’clock. In higher powered power tubes hooked up in a kind of semi-parallel manner. ■ now for my personal use, a super The claims for this kind of audio hook-up are great and varied, i^iost of which is merited. I find it rather hard to explain some of the tech nics of radio so that those who have never made a very extensive study of radio may understand the theory and principles involved and at times I find it necessary to vary a little the true schematic arrangements to be able to present the matter in a little clearer light. In radio there are harmonics, those that are de sirable. In audio amplification these harmonics play a vital part in the quality of the reception which ema nates from the speaker. In push pull audio the hook-up is such that these harmonics are taken care of in the correct manner and the re sultant output i.s of the very best. The action of tubes in push pull arrangement is in this manner: There is introducedin—to the audio tubes two harmonics—or kinds of harmon ics, evien harmonics and odd har monics. In the old conventional type of audio amplification, both these harmonics passed on through the en tire audio system and often a blurred or distorted signal emanated from the speaker. In push pull audio these harmonics do not all go gal loping all the way through the audio •system but all the even harmonics are acted upon in such a manner that they are neutralized—balanced out. This action is caused because in each tube these even harmonics are present and they being even in nature, these even harmonics in each tube act upon each other and being heterodyne receiver which' uses one 250 power tube in the last stage and is an eight tube receiver. While I get very nice and sweet music from this receiver, it incorporates certain features which would not Lend it so admirably to the average person. I use a loop for an aerial and get more distant stations than many of the high priced receivers will pull in. To do this, I built in to this receiver Certain features not found in any other receiver at ■ this time. I used two 122 shield plate (screen grid) tubes and I ‘doubt if any re ceiver near here uses exactly this type of screen grid tube. It will be well for any one who has push audio in their receivers to look well after their tubes when the signal fails to be clear and a faithful reproduction of the original broad cast. The fact that the tubes light and seem normal is not absolute proof that they are functioning prop erly. A splendid means of trying out the tubes is to pull out one audio tube at a time while the signal is comi.ng in, first one and then the other. In either of thesis two trials of letting one tube amplify at a time, the signal should sound with the same clearness and volume for each tube. Of course in this ar rangement, the volume will fall off greatly but it should still be audible. Those desiring information relative to their radio receivers may have a free treatise as to possible cause of trouble if they will address their communication in care of The John- stonian-Sun, Selma, N. C., inclosing of equal strength—even, they bal- i self-addressed envelope and 2c stamp, lance each other out but with the giving kind and model of receiver, odd harmonics the action is different, length of aerial, kind of ground con- the.se harmonics being odd—in vari ance with each other, their action is different in that being.odd in respect to each other, they will not balance against each other and hence they pass on through the tube and we get the one kind of harmonic, not a com bination of harmonics and hence the output is smooth and clear. In a. c. sets-where push pull audio is used, there is another distinct advantage in that any stray noise that may be introduced into the signal by this audio (push pull) tubes is also bal anced out by these tubes in a similar manner to that in handling the har monics. A. c hum is lessened by the usis of push audio amplification. With the use of power detection as used in most present day receivers, the push system has a. large power handling capadty and this makes for smoother and (juieter opieration. Now for some of the types of power tubes that are desirable for use in the audio system. In most later models of receivers the use is made of the 245 power tube and justly so because two of these tubes will handle nearly as much power as one 250 power tube which is the largest and most powerful of all audio tubes. The 250 power tube reeprires 450 volts plate pressure which means that a powierful step-up transformer must be used to convert the 110 volts from the electric light lines to the necessary 450 volts for the plate of this tube. These high voltages are 'a little dangerous in the hands of the novice in as much' as they act upon a very delicate and intricate electrical and mechanical system. The 245 tube only requires 250 volts maximum upon its plate and may be worked satisfactorily quite a bit be low this point and hence the need for such a powerful step-up transformer is necessary. The 210 power tube is a step in-between the 250 and th(e 245 power tubes but requires practically the same voltages as does the 250 tube. Next below the 245 is th,e 171 power tube which gives very good results with a maximum plate voltage of T80 volts and its close completitor, the 112A is not (]uite as powerful but gives a better quality of output with practically the same voltage on its plate as those used for the 171. While as a whole, the advantages nection used a and general descrip tion of symptoms etc., as to how the receiver functions. RADIO SERVICE AFFECTED BY SOIL AROUND STATION Placing a radio station seems ut terly different from planting com or cotton, but the two have one point in common. The right kind of soil is important to the corn or cotton crop, and the right kind of soils is important to the most effective oper ation of the radio .station. This fact came out w'hen a representative of a large concern manufacturing radio transmitting apparatus visited the United States Department of Agri culture and asked to examine soil- survey reports and maps as a guide to the placement of radio stations in the middle West and Southwest. This use of the soil-survey records was new to the soil specialists of the department. The radio expert explained that engineers have found that radio transmission is better over soils which are retentive of moisture than over drier soils. They believe this is because the drier soils absorbe tfle radio waves to a greater degree than do the moist soils. He said that the soil maps and the detailed descriptions of' the structure, the texture, and the arrangement of the lay-eers of soils which are included in the department’s soil-survey re ports have already proved useful in locating stations. Soil-survey reports are in demand by settlers in search of productive lands, by farmiers seeking to make the best use of their fields, by en gineers in building roads, by bank .and mortgage concerns in estimating the loan value of farms. These uses are familiar, but it will be news to most soil surveyors that their work also locates the spots on the earth which provide the best sounding board for radio transmis- Last year 1,876,000 persons moved from farms to cities, and 1,257,000 moved from cities to farms, a move ment away from farms of 619,000, according to U. S. Bureau of Agri cultural Economis figures. The popu lation is' now the smallest in 30 years. various ways they amused themselves while there, bathing, boat-ridiilg and otherwise; until about dark when they spread and ate the appetizing lunches which they had prepared. Later in this evening they returned home. Mrs. Ad Mitchell, of Live Oak section, was buried in the Kirby burying ground near Kenly, Satur day, midst the presence of many friends and relatives. Messrs. P. D. Grady, L. C. Wilkin son, J. F. Grumpier, and W. T. Kirby made a business trip to Nash ville, Tennessee last week, leaving Kenly Sunday and returning Tues day. Mrs. L. A. Johnston and daughter. Pearl, of Rocky Mount, spent last week with Mrs. J. R. Johnston. Misses Eva Pittman and Melba Watson spent Thursday night and Friday in Princeton, guests of Miss Beulah Worley. Mrs. Cecil Davis of Smithfield vi.sited his cousin, Mr. Vonnie Pitt man, Saturday night and Sunday. Rev. Kirby, of South Carolina, was the w,eek-iend guests of Mr. and Mrs. W. T. Kirby. An announcement party was given at Mr. P. D. Grady’s, announcing the marriage of his daughter, Eloise. The couple had been married since last September. Miss Hazel Phillips visited rela tives in Smithfield the past week. Mr. Thad Harris, of Enfield, visited in Kenly Wednesday afternoon and night. Miss Beaulah Worley, of Prince ton, was the week-end guest of Miss Melba Watson. Messrs. E. J. High, Jr., and Ron ald Griffin, of Bailey, visited in Ken ly Sunday night. Mr. Joe Pittman, of Enfield, spent Sunday in Kenly with his parents, Mr. and Mrs. R. L. Pittman. Mr. and Mrs. Luther Pittman, of Micro visited Mr. and Mrs. E. G Pittman Friday night. Messrs. William Godwin, Lester Watson and Velma Atkinson, who have been in Atlanta, Ga., quite a while, returned to tbsir respective home in Kenly last week. Misses Lois Barnes and Clarence Pittman visited Mr. and Mrs. P. A. Talton and family; of near Prince ton, Thursday night and Friday. Mary, the baby daughter of Mr. and Mrs. James Bunn, of near Kenly, died Friday. She was buried in the Bunn burying ground Saturday. Mr. Larry Raper spent Saturday night with his brother, Robert, of the Hickory Cross section. Misses Grace Watson and Leora Cooke made a busines.s trip to Princeton Friday. Mr. and Mrs. H. R. Renfrew and family visited Mr. J. R. Hinnant, of Raleigh, Sunday. Mr. and Mrs. P. D. Grady and Mr. and Mrs. L. C. Wilkinson left Monday for Canada. Miss Maud Edwards, of Princeton, visited Miss Eva Pittman the past week-end. Mr. Justice Hai-dison, of New York, is spending some time in Kenly with his parents. , Mr. and Mrs. Jack Ballanoa and Messrs. Cecil Pavis, Vonnie Pittman, and R. L. Pittman carried Mr. and Mrs. Ballance’s son, Wallace, to the State Sanitorium at Aberdeen Mon day for examination. The announcement of the marriage of Miss Eloise Grady, of Kenly, to Elbert Stanford Eskridge, of Shelby, which was made public at a party given at the home of the bride’s parents last Thursday evening, came as a complete surprise to friends and relatives. The couple had been mar ried since September 13th, 1929. They w’ill be at home in Winston- Salem aftern July 15th. Miss Eva Pittman shopped in Smithfield Tuesday. Messrs. Walter and Hoyle Stin son, of Raleigh, visited their brother, Bernice, Sunday. Mr. Bernard Ferrell spent Monday night and Tuesday with Mr. Nathan Talton, of Princeton. Friday in Oxford with relatives. Mr. and Mrs. R. B. Strickland spent Wednesday in Fayetteville. Miss Luma Lewis and Mr. C. G. Grady visited friends in Raleigh Sun day. . Mrs. Reid Adams spent last week in Knightdale as the guest of her sister Mrs. Robert Wilder. The Granny Creech Circle met on Tuesday evening at the home of (By ALICE HINNANT) SUNNYSIDE , , . ,. I (The sixth m a senes of ten talks I by Welby R. Stevens, assistant fore-' ■ I caster, U. S. Weather Bureau, de- ! livened through WRC and 32 other Mrs. Bud Evans and daughter stations associated with the Nation-; Mildred spent Sunday -with Mr. and al Broadcasting Company, at 1:10 atives. Mrs. Eddie West, of Brodgen. p. m, Eastern Standard Time, Thurs- Miss Mildred Lassiter spent last Mj-s. Atsy Peel and children and day, January 16, 1930.) week in Benson with friends. i father Mr. George Durham, of nearj Last week 'wie said that the most Mr. and Mrs. Bert Lassiter andij^gniy^ spent the week-end with Mr. important feature on the wea.ther little daughter spent Thursday and and Mrs. W. A. Grumpier. ’ ' chart was the isobars. These lines. Miss Alice Hinnant spnt the week- located the high and low pressure end with her sister Mrs. L. M. areas, which are roughly elliptical m Barnes of Batten’s X Roads. ;form. It is absolutely necessary for Miss Hazel Crumplei; spent Thurs- the forecaster to know where the day with her aunt Mrs. Wiley Wiggs HIGHS and LOWS are located, be- of Fitzgerald section. | cause the ceasless changias in our Miss Esther Braswell spent the weather are due almost entirely to week-,end with Miss Ethel Batten, of ^ their approach and pa.s?age and the near Micro. winds which attend them. Mr. and Mrs. L. M. Barnes and | The meteorologist used a variety children, of Batten’s X Roads, spent, of terms to designate a low pressure Mrs. R. C. Cannaday. The meeting I g^nday with Mr. and Mrs. Theo Hin- area, such as LOW, depression, dis- was opened with prayer by Mrs. B.^nant. i turbance, or cyclone. Contrary to B. Creech, after which the roll was I Mieses Daisy and Allie Evans popular public opinion cyclone is called and minutes of last meeting' spent Supday with Mr. and Mrs. not the proper name for a .s|=vere read. After a brief business session, ’ Evans, of Batten’s X Roads, wind storm and is often used to the Circle continued the study of j Mrs. Will Martin and children and indicate a tornado. Only rarely are the mission book, “Ann of Ava.”. i\jr Oscar Evans and children and the winds in a cyclone destructive. During the social hour the hostess, ]\lrs. Salmon spent Sunday afternoon "while in a toraado they are alvi ays served a frozen fruit salad course | with Mrs. Jack Martin, of Pleasant destructive. with- iced tea. | Plain. i cyelonie or LOW is of wide ex- Mr. and Mrs. L. M. Eldridge, of' Mr. and Mrs. Gernie Price and tnet. On the average they have di- Benson, visited Mr. and Mrs. W. P. Massengill Sunday. Mr. Herman Berkshotz, of Rich mond, is spending several days, here as the guest of Mr. and Mrs. N. H. Keene. Dr. and Mrs. W. T. Witte, of Rich mond, are the guests of Mr. and Mrs. S. E. Sherrill. Mrs. Jack Stallings and son, of Charlotte, spent Friday and Satur day here as the guests of her sister Mrs. Carl Lewis. children, of Pine Level, spent Sun- ameters between 600 and 1000 miles, day afternoon with Mr. and Mrs. but sometimes they may be as large Fletcher House. 2000 miles in diameter. They Mr. and Mrs. Eddie West and usually move from some westerly to children,, of Brodgen, spent Wednes-1 some easterly point. Except in a day night with Mr. and Mrs. Bud Evans. Mr. and Mrs. C. V. Evans and children, of Goldsboro, spent Wed nesday night with Mr. and Mrs. Tom Evans. Mr. and Mrs. Monroe Braswell and children spent Sunday afternoon with Miss Katie Allen, member of the j Mr. Braswell’s mother Mrs. Braswell, Micro school faculty, has returned home. She will leave next week for of Royal section. Mr. and Mrs. Raymond Sutton and Lke Sunday. Mr. and’ MrS. W. M. Pace and children -visited Mr. and Mrs. Baimie Brown Sunday afternoon. MAKING RELIGION A REALITY Greenville, where she will attend-Miss Myrtle Barnes went to White summer school. Rev. Ordell E. Bryant and Mrs. Bryant, of Clinton, visited Mrs. B. A. Rich Thursday. Mrs. J. E. Lassiter and Mrs. Martha Lassiter shopped in Smith- field Thursday morning. Mrs. Garland Adams, of Greens boro, is spending sometime here with her parents Mr. and Mrs. B. B. Adams. Mrs. Katherine Adams and son Billy left Thursday afternoon for Greenville, where they -will spend the. summer. , Mr. Herman Creech and family, of Tarboro, spent Sunday here with Mr. and Mrs. J. B. Crisech. Mr. Charles Lee, Jr., spent Mon day in Smithfield with relatives. Mr. and Mrs. Dalma Upchurch, (By D. M. SHARPE) W-e never get very far in enjoy ing our religion until it becomes a reality in our lives. Just to talk about being good does not amount to anything in our lives if we continue to sin and -violate every command of God. There is no need to try to carry religion along as an emergency measure. We should get away from the “spare-tire” idea and make our religion a thing of vital importance to real life. Men do live in skeptical attitude, Men live in Mr. and Mrs. Elton Strickland, Mrs. Evelyn Strickland and Miss Margaret I Strickland spent, Sunday m Coats, the guests of Mr. and Mrs. W. M. Keene. Mr. and Mrs. Ham Johnson and Mr.s. Alton Massengill spent -Friday in Raleigh. Miss Ro.ss Worley, of Selma, spent a short time in town Friday. 3Ir. and Mrs. C. H. Gibson, of Rocky Mount, spent Friday night j certain portion of the distuibance, the wind does not blow in the same direction that the LOW is moving. This is dfie to the fact that the surface winds circulate around the LOW. The circulation is counter clockwise in the Northern Hemis phere and clockwise in the Southern, with the winds blo-iving spirally in ward tow-ard the center. In the Northern Hemisphere the tempera ture to the south and east of the LOW is comparatively high because in those portions the -winds are from some southerly quarter. On the west side the 'temperature is comparatively low for the wind is from some northerly direction. Clouds alia almost entirely lacking on the west .side but generally ex tend far out to the east. Rain is usually associated -with LOWS; most of it occurs in the eastern half. Just as two valleys are an im possibility without a hill or ridge of land between them, in he same way two areas of low pressure can not exist without a region of higher pressure between. These regions of high pressure in many ways stand in sharp contrast with the LOWs and have many characteristics which are exactly opposite. The wind circulation around a women and children, but not for men. Just so long- as a man thinks he can live as he pleases, run his business as he pleases, deny the command of God, in the Decalogue or in the Sermon on the mount, we -will have uncertain condition.^-, and uncertain loyalties in men. The business man , . , , . , ,, may defy me or any other preacher, here with their parents Mr. and Mrs. i. . ., • • i ^ , „ „ , I but there is a sure judgment. It I has been with other men, and will sooner or later be brought to you. J. B. Creech, Mr. and Mrs. John Massengill, and Mrs. Thomas Speare, of Golds boro, were here for a short time Sunday eveni-ng. Miss Lucile Strickland spent the week-end near Smithfield with Mrs H. G. Johnson. Mr. and, Mrs, Horace Smith and children, of Newport News, Va., are spending some time here with their parents Mr. and Mrs. Jas. A. Creech. Mr. Hubert Allen, of Wilson, spent the week-end here with relatives. Mr. Hoyt Massengill, of Richmond, HIGH is clockwise in the Northern Hemisphere and just the reverse in attitude that religion is good for „ .A • , ,, the Southern, with the winds blow ing spirally outward. In them but few clouds are to be seen and precip itation is usually lacking. With the advance of a HIGH there is a de cided drop in temperature in the eastern portion where, in the North ern Hemisphere, the winds are from the north. After the center of the HIGH has passed there is a decided rise in temperature on the western side where the winds are southerly. There is a very definite relation between pressure and wind direction, which was formulated into a law al most a century ago. This law proved to be very valuable to mariners in avoiding dangerous storms. It states: If you stand with your back to the wind, the region of low pressure will be to the left in the Northern Hem isphere and to the right in the Southern. It must be liemembered that the statements''- -we have made in con nection with HIGHS and LOWS ap- Why should you think you can vio late the laws of right and get -by with it ? All we have' to do is to look back through history as far as we like or can and ws will find that “the man that sinneth shall surely die.” The nation who rejects the Lord it shall die. This is being demonstrated everyday. Thi.s is not because there is an angry God oPt yonder some where who is mad with you, but it The severity of cutting or length of the cutting season and the treat ment of asparagus after the cutting season determine to a great extent the quality and quantity of the next year’s crop. Cutting too late ex hausts the plants. After ridges have been leveled and the beds have been cultivated thoroughly, broadcast and work in a god high-grade, complete fertilizer at the rate of 1,000 to 1,500 pounds, per acre. Give the bed flat culture for the remainder of the growing season. . , . , ,is because there is an unerring law Va, IS home for awhile, , recuper- , ,. ’ , i • a jud,ges you. If you .stick your, , . , . ™ ^ttack of influenza. I burned, i ^ Each in Mrs. W. M Keene and children, of | men, .play with hell i ^OW has its own lats, visited friends m town Thurs-,.^ ^ou can not blame | f ^^^teristics a.nd it is a I problem for the forecaster to decide how each onie is going to behave. Next week w,e shall tell vou more Coats day afternoon. Mr. and Mr.s. Jesse Coats, of Smithfield, visited their brother Mr. J. D. Upchurch Friday. any one for it except yourself. This , is the very reason I preach so earn-, estiy that men should repent and do i , , ,, , God’s will. I want to be .sure that the characteristics and import- Mi-s. Alderman, of Raleigh, visited'^^en you'sometime wake up \vhenj'‘“‘'® HIGHS and LOWS. Mrs. C. H. Wello,ns Sunday after- Many dairymen believe that cows should always be milked regularly, it i.s. too late you will bs able to | ~ say, “You did not tell me the truth' mosquitoes come around: about God and religion.” torm.ent us again, it may he well We have in business, homes, state and nation tried everything else. but tests at the U. S. Bureau of (Would it not be-a splendid thing to Dairy Industry Experiment Farm at [ try religion a while. Christianity Beltsville, Md., show 'that an aver- I has not failed. The church of Christ age to good cows can be milked I has not failed, but we have failed at irregular hours -without any ma terial effect on milk production. Ap parently cows are more sensitive to changes in feeding routine than to variation in the hours of milking. Pick mushrooms when they are “buttons”—that is, before the mem brane or veil extending from the margin of the cap to the stem has broken. At this stage they com mand a better price than when larg er. Mushrooms may he picked by twisting the base of the stem. Take care to press the soil over any holes made in picking. to put them to the test. I am as sure that wrong -vill not ..^atisfy man’s soul as I am that the sun will rise and set tomorrow. I have no doubt about the matter. Yet in the face of it all, men refuse to believe what is the truth beyond all doubt. Currituck potato grov/ers are in terested in a plan whereby hogs will be used to glean the fields after the sweet potatoes are harvested. Some tests will be made to determine the value of these gleanings both alone and in combination with other feed. to have a copy of Farmer.s’ Bulle tin 1570-F, Mosquito Remedies and Preventives. This bulletin can be secured free from the U. S. Depart- ' ment of Agriculture, Washington, ton, D. C. ' The Rats Around ]My Place W^ere Wise,” Says John Tuthill. “Tried everything to kill them. Mixed poison with meal, meat, cheese, etc. Wouldn’t touch it. Tried- RAT-SNAP. Inside of ten days got rid of all rats.” You don’t have to mix RAT-SNAP with food. Saves fussing, bother. Break a cake of RAT-SNAP, lay it where rats scamper. You will see ,no more. Three ,sizes, 35c, 6oc, $1.25. Sold , and guaranteed by E. V. Woodard, Druggist, Selma, N. G.; Godwin Drug Co.; Pine Level, N. C.; A. P. Holt & Sons, Princeton, N. C. Adv- i
The Johnstonian-Sun (Selma, N.C.)
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June 12, 1930, edition 1
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