Commission on Communications: Hearings Seventy-first Congress, First and Second Session, Հատոր 2,Հատոր 1-9U.S. Government Printing Office, 1929 - 2392 էջ |
From inside the book
Արդյունքներ 71–ի 1-ից 5-ը:
Էջ 26
... kilocycles a second , which is about four to eight trillion actual vibrations . We do not know very much about waves in the interim between what we now call radio waves and what we call infra - red rays . Since these radio waves travel ...
... kilocycles a second , which is about four to eight trillion actual vibrations . We do not know very much about waves in the interim between what we now call radio waves and what we call infra - red rays . Since these radio waves travel ...
Էջ 27
... kilocycles ) . To get down to terms with which you are more familiar : If you have a station that is on a wave length of 300 meters , it necessarily has a frequency ( or rapidity of alternation ) of 1,000 kilocycles ( one million times ...
... kilocycles ) . To get down to terms with which you are more familiar : If you have a station that is on a wave length of 300 meters , it necessarily has a frequency ( or rapidity of alternation ) of 1,000 kilocycles ( one million times ...
Էջ 28
... kilocycles to 65,000 kilocycles has been divided up . broadly speaking , into three major bands of frequencies : The first band extends from 10 kilocycles to 550 kilocycles , and is usually referred to as the low - frequency ( or long ...
... kilocycles to 65,000 kilocycles has been divided up . broadly speaking , into three major bands of frequencies : The first band extends from 10 kilocycles to 550 kilocycles , and is usually referred to as the low - frequency ( or long ...
Էջ 29
... kilocycles to , for practical purposes at the present time , 23,000 kilocycles . There are fair prospects that in the future , not too remote , that will extend to 65,000 kilocycles . Senator DILL . Those are what are commonly called ...
... kilocycles to , for practical purposes at the present time , 23,000 kilocycles . There are fair prospects that in the future , not too remote , that will extend to 65,000 kilocycles . Senator DILL . Those are what are commonly called ...
Էջ 30
... kilocycles , ( 2 ) a wave of 1,001 kilo- cycles , and ( 3 ) a wave of 999 kilocycles . These last as long as the note is being carried , and are called the side bands . It is one thing , however , to send a telegraphic signal , which ...
... kilocycles , ( 2 ) a wave of 1,001 kilo- cycles , and ( 3 ) a wave of 999 kilocycles . These last as long as the note is being carried , and are called the side bands . It is one thing , however , to send a telegraphic signal , which ...
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Common terms and phrases
agreement Alaska America Cables American company apparatus application assigned Assistant Secretary CASTLE authority broadcast band broadcasting stations CALDWELL Captain HOOPER carrier carrier wave cent CHAIRMAN channels charged circuits Commissioner ROBINSON committee communications company company or concern Congress connecting contract Cuba Federal Radio Commission filed foreign countries foreign government frequencies granted hereby interest interference Interstate Commerce Interstate Commerce Commission kilocycles kilowatts land and operate license Lieutenant Commander CRAVEN lines Major General GIBBS Major General SQUIER matter ment messages officers Ordinary telegrams parties patents Postal Telegraph-Cable Co President privileges question radio communication Radio Corporation radio stations rates regulation Senator BROOKHART Senator DILL Senator HOWELL Senator KEAN Senator PITTMAN Senator WATSON ship submarine cable telephone territory thereof tion traffic transmission transmitted United WARREN G wave lengths Western Union Western Union Telegraph wire wireless York