GB393147A - Improvements in or relating to apparatus for the transmission and reception of wireless messages and the like - Google Patents

Improvements in or relating to apparatus for the transmission and reception of wireless messages and the like

Info

Publication number
GB393147A
GB393147A GB2574032A GB2574032A GB393147A GB 393147 A GB393147 A GB 393147A GB 2574032 A GB2574032 A GB 2574032A GB 2574032 A GB2574032 A GB 2574032A GB 393147 A GB393147 A GB 393147A
Authority
GB
United Kingdom
Prior art keywords
loud
speaker
note
reception
frequency
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
GB2574032A
Other languages
English (en)
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
Priority to BE398641D priority Critical patent/BE398641A/xx
Application filed by Individual filed Critical Individual
Priority to GB2574032A priority patent/GB393147A/en
Publication of GB393147A publication Critical patent/GB393147A/en
Priority to FR760906D priority patent/FR760906A/fr
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Optical Communication System (AREA)
GB2574032A 1932-09-16 1932-09-16 Improvements in or relating to apparatus for the transmission and reception of wireless messages and the like Expired GB393147A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
BE398641D BE398641A (fr) 1932-09-16
GB2574032A GB393147A (en) 1932-09-16 1932-09-16 Improvements in or relating to apparatus for the transmission and reception of wireless messages and the like
FR760906D FR760906A (fr) 1932-09-16 1933-09-15 Améliorations relatives aux appareils de transmission et de réception de communications télégraphiques sans fil et autres similaires

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2574032A GB393147A (en) 1932-09-16 1932-09-16 Improvements in or relating to apparatus for the transmission and reception of wireless messages and the like

Publications (1)

Publication Number Publication Date
GB393147A true GB393147A (en) 1933-06-01

Family

ID=10232501

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2574032A Expired GB393147A (en) 1932-09-16 1932-09-16 Improvements in or relating to apparatus for the transmission and reception of wireless messages and the like

Country Status (3)

Country Link
BE (1) BE398641A (fr)
FR (1) FR760906A (fr)
GB (1) GB393147A (fr)

Also Published As

Publication number Publication date
FR760906A (fr) 1934-03-06
BE398641A (fr)

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