Standard frequency radio emissions

• Publisher: Elsevier Science
• Year: 1935
• Tongue: English
• Weight: 110 KB
• Volume: 219
• Category: Article
• ISSN: 0016-0032
• DOI: 10.1016/s0016-0032(35)91524-1

✦ Synopsis

The Bureau hereby announces changes in its schedule of standard frequency radio emissions from its station WWV, Beltsville, Md., near Washington, D. C. The changes will substantially increase the service available to transmitting stations for adjusting their transmitters to exact frequency, and to the public for calibrating frequency standards and transmitting and receiving apparatus.

The emissions will be on two days a week instead of one day as formerly, and will be on the three frequencies, 5,000, IO,OOO, and 15,ooo kilocycles per second, instead of the single frequency 5,000. The changes are the result of experimental emissions made by the Bureau on IO,OOO and 15,ooo kc., with the aid of a large number of organizations and persons who observed the received signals at various places. These tests showed that service could be rendered at all distances in the daytime by the use of the three frequencies. With the use of 5,000 kc. alone it was necessary to have emissions at night in order to give service at distances greater than a few hundred miles from Washington. With the use of the three frequencies no night emissions will be necessary.

Of the emissions now scheduled, those on 5,000 kc. are particularly useful at distances within a few hundred miles from Washington, those on IO,OOO kc. are useful for the rest of the United States, and those on 15,ooo kc. are useful in the United States and other parts of the world as well.

Beginning February I, 1935, and continuing each Tuesday and Friday thereafter (except legal holidays) until further notice, three frequencies will be transmitted as follows: noon to I P.M., Eastern Standard Time, 15,ooo kc.; I:15 to 2:15