GB301070A - - Google Patents

Info

Publication number
GB301070A
GB301070A GB32047/28A GB3204728A GB301070A GB 301070 A GB301070 A GB 301070A GB 32047/28 A GB32047/28 A GB 32047/28A GB 3204728 A GB3204728 A GB 3204728A GB 301070 A GB301070 A GB 301070A
Authority
GB
United Kingdom
Prior art keywords
valves
fed
generators
waves
source
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
GB32047/28A
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.)
Telefunken AG
Original Assignee
Telefunken Gesellschaft fuer Drahtlose Telegraphie mbH
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 Telefunken Gesellschaft fuer Drahtlose Telegraphie mbH filed Critical Telefunken Gesellschaft fuer Drahtlose Telegraphie mbH
Publication of GB301070A publication Critical patent/GB301070A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/02—Transmitters
    • H04B1/04—Circuits
    • 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

301,070. Telefunken Ges. f³r Drahtlose Telegraphie. Nov. 24, 1927, [Convention date]. Void [Published under Sect. 91 of the Acts]. Fading, preventing; thermionic generators.- A transmitter operating on short waves produces two waves by two valves fed from an alternating-current source in opposite phase. The Figure shows valves E, E2 feeding aerials A1 A2, each tuned to a different frequency by circuits S1, S1, and S2, S,. The plate supply from a source I is fed through a transformer T with the mid-point of the secondary winding connected to both filament systems so that the valves E1 E2, function alternately. The valves instead of being generators may be independently-excited amplifiers.
GB32047/28A 1927-11-24 1928-11-03 Expired GB301070A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE301070T 1927-11-24

Publications (1)

Publication Number Publication Date
GB301070A true GB301070A (en) 1929-07-11

Family

ID=31894287

Family Applications (2)

Application Number Title Priority Date Filing Date
GB32047/28A Expired GB301070A (en) 1927-11-24 1928-11-03
GB34782/28A Expired GB301326A (en) 1927-11-24 1928-11-26 Improvements in or relating to radio transmitters

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB34782/28A Expired GB301326A (en) 1927-11-24 1928-11-26 Improvements in or relating to radio transmitters

Country Status (2)

Country Link
US (1) US1805918A (en)
GB (2) GB301070A (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2549423A (en) * 1943-09-22 1951-04-17 Rca Corp Reduction of selective fading distortion
US2465925A (en) * 1944-05-18 1949-03-29 Rca Corp Radio control system
US2722606A (en) * 1946-08-02 1955-11-01 Ollie J Allen Audio frequency pulse generator
US2568408A (en) * 1947-05-17 1951-09-18 Rca Corp Frequency shift diversity transmission system
US2767258A (en) * 1952-10-10 1956-10-16 North American Aviation Inc Voltage doubling demodulator
US3806925A (en) * 1961-01-26 1974-04-23 Us Navy Countermeasures system
US5303259A (en) * 1991-11-07 1994-04-12 Loveall Peter S Frequency-hopped electronic signal transmitter

Also Published As

Publication number Publication date
US1805918A (en) 1931-05-19
GB301326A (en) 1929-03-28

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