GB370351A - A method of radio transmission on ultra-short waves - Google Patents

A method of radio transmission on ultra-short waves

Info

Publication number
GB370351A
GB370351A GB32358/31A GB3235831A GB370351A GB 370351 A GB370351 A GB 370351A GB 32358/31 A GB32358/31 A GB 32358/31A GB 3235831 A GB3235831 A GB 3235831A GB 370351 A GB370351 A GB 370351A
Authority
GB
United Kingdom
Prior art keywords
frequencies
frequency
ultra
wave
short
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB32358/31A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of GB370351A publication Critical patent/GB370351A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J1/00—Frequency-division multiplex systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B14/00—Transmission systems not characterised by the medium used for transmission
    • H04B14/08—Transmission systems not characterised by the medium used for transmission characterised by the use of a sub-carrier
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/12—Frequency diversity

Abstract

370,351. Wireless transmitting systems. ARDENNE, M. VON, 19, Jungfernstieg, Lichterfelde, Berlin. Nov. 23, 1931, No. 32358. Convention date, Nov. 22, 1930. [Class 40 (v).] In order to provide an ultra-short-wave broadcasting service over a comparatively large district, a plurality of spaced transmitters is employed, each transmitter operating on a different wave-length (corresponding say to frequencies s1, s2, s3) and each modulated by a series of high frequencies (l1 .. l9) carrying the respective programmes. Thus if there are three programmes, the first is modulated on the waves l1, l2, l3, the second on l4, l5, l6 and the third on l7, l8, l9, assuming l1, . . l9 to be arranged in ascending or descending order of frequency. The ultra-short wave of frequency s1 is then modulated by l1, l4, and l7, that of frequency s2 by l2, l5, and l8, and that of frequency s3 by l3, l6, and l9. The frequencies l1 . . l9 should all lie within a single octave, and the frequencies s1, s2, s3 should be so chosen that their differences do not lie within this octave. At the receiver, programme selection is effected by tuning an ordinary broadcast receiver to the frequencies l1 .. l9, which should lie within the broadcasting band. The short-wave adapter interposed between the aerial and the receiving set may then be untuned.
GB32358/31A 1930-11-23 1931-11-23 A method of radio transmission on ultra-short waves Expired GB370351A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE682789T 1930-11-23

Publications (1)

Publication Number Publication Date
GB370351A true GB370351A (en) 1932-04-07

Family

ID=6320309

Family Applications (1)

Application Number Title Priority Date Filing Date
GB32358/31A Expired GB370351A (en) 1930-11-23 1931-11-23 A method of radio transmission on ultra-short waves

Country Status (5)

Country Link
US (1) US1982771A (en)
BE (1) BE384321A (en)
DE (1) DE682789C (en)
GB (1) GB370351A (en)
NL (1) NL37403C (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2532719A (en) * 1944-10-16 1950-12-05 John H Homrighous Dimensional radio communication system
US2979706A (en) * 1956-07-02 1961-04-11 Avery H Simon Radio warning system
US3462688A (en) * 1967-04-10 1969-08-19 William E Abel Communication system for classroom use and the like

Also Published As

Publication number Publication date
NL37403C (en)
DE682789C (en) 1939-10-21
BE384321A (en)
US1982771A (en) 1934-12-04

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