Word: radioed
(lookup in dictionary)
(lookup stats)
Dates: during 1920-1929
Sort By: most recent first
(reverse)
After preliminary experiments it was found that the hour from nine to ten o'clock in the evening was on the whole best suited for determining the strength of the radio signals each night. The broadcasting station, WBBM of Chicago, maintained reliable consistency in power which it transmitted and communicated with the Astronomical Laboratory concerning any departures from normal conditions. The intensity of the signal strength measured is that of the carrier wave which is not apparently affected by the modulations of the program broadcasted...
...proven that a definite correlation exists between radio reception and sunspot activity by comparing graphs made of the results of the various experiments...
...quantitive measurement of the radio reception intensities was begun at the private laboratory of Mr. G. W. Pickard in Newton Centre. Last year a duplicate outfit was then installed at the Astronomical Laboratory in Cambridge and the measurements carried on there under the direction of Professor Stetson. For a few weeks simultaneous records were kept in the two places until a satisfactory reduction factor was obtained whereby the two series of data could be rendered comparable...
Another important result of the study of the radio reception is to show completely how unfounded is the popular impression that radio reception is universally poor in summer and good in winter. Generally speaking, reception should be better in the winter months on account of the shortened days and decreased daylight. On the other hand, the sunspots and radio curves show that the increased solar activity actually gave much poorer reception in the winter months of both 1926 and 1927 than during the summers of the same years. With the recent decrease in spots on the sun, radio reception during...
While it has been evident that increasing sunspot activity has been accompanied in general with a decrease in intensity of radio signal strengths received, exceptions occur from time to time due, in part, to atmospheric and possible meterological changes. It has furthermore been possible to obtain a degree of correlation between barometric gradients and the intensity of reception received. It is by taking moving averages of several days data that the sunspot intensity correlation becomes markedly apparent...