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May 16, 1931
CHANGE TUBES ONCE A YEAR
Commissioner Harold A. Laf ount , speakingVto a group of radio listeners this week, urged that receiving set tubes be replaced once a year. He said:
’’Many set owners pay too little attention to the hearts of receivers.
The tubes do the real work, but like most mechanical devices they will wear
out. An automobile, no matter how perfectly constructed, would not travel a
great distance without oil. Manufacturers tell us to change the oil every five hundred miles; not because it has disappeared, but because it has lost its efficiency. Many of its virtues and characteristics have disappeared, although the fluid itself still exists. This to a great extent is true with the tubes in your radio set. People often complain that reception is not sat¬ isfactory, when perhaps they are using tubes from one to three years old. For efficiency you should replace all your radio tubes once a year.
'•Unsatisfactory reception is also often produced by replacing a burned out tube. The now tube is so much more efficient than those remaining in the set it causes distortion. I may compare this with the placing of a new string in your piano, and then failing to tune the piano, or blend all of the strings.
"If you expect the reproduction of all sounds and the harmony which is transmitted, it is wise to replace all the tubes, even though they have not com¬ pletely burned out. Depreciation of tubes is gradual consequently unnoticeable. If your old tubes are all replaced with new ones, you would notice a marked improvement, in fact the old receiving set would surprise you."
YOST RECOMMENDS STATION MOVE
The recommendation originally made in Examiner's Report 18 was upheld by Examiner Yost this week, in Report 158 (Dockets 952 and 958) covering a rehear¬ ing of additional evidence in the applications of James A. Matthews and Charles Huber, Aberdeen, S. D. for authority to erect a new station on 1270 kc with 100 watts and daylight operation; end of Station KGFX, Equity Union Creameries, Inc. to move a station from Pierre to Aberdeen, reducing the power on the present station assignment of 580 kc to 100 watts with daylight operation. The Exam¬ iner held that it would be in the public interest to deny the application for the new station on 1270 kc , and recommended the granting of the request of station KGFX to move the station to Aberdeen, The testimony at the hearing indicated "all protests made against the removal of Station KGFX from Pierre to Aberdeen have been withdrawn," and that Aberdeen and the surroiinding area is now without dependable daytime reception. Station WNAX, Yankton, S. D, a res¬ pondent at the hearing, introduced testimony to the effect that Pierre and Aber¬ deen are now served by this station. The summarized recommendation of the Examiner in granting the request of station KGFX to move provided that the ap¬ plicant install modern equipment and that the transmitter be located in "a sparsely settled area" to reduce "blanketing," It was further recommended that the pending application for assignment of license from Dana McNeil to the Equity Union Creameries, Inc. be granted by the Commission without further hear¬ ing.