FR720342A - Improvements to frequency changers for radio signaling - Google Patents

Improvements to frequency changers for radio signaling

Info

Publication number
FR720342A
FR720342A FR720342DA FR720342A FR 720342 A FR720342 A FR 720342A FR 720342D A FR720342D A FR 720342DA FR 720342 A FR720342 A FR 720342A
Authority
FR
France
Prior art keywords
radio signaling
frequency changers
changers
frequency
signaling
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
Other languages
French (fr)
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.)
DUCRETET SOC D Ets
Original Assignee
DUCRETET SOC D Ets
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 DUCRETET SOC D Ets filed Critical DUCRETET SOC D Ets
Application granted granted Critical
Publication of FR720342A publication Critical patent/FR720342A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D7/00—Transference of modulation from one carrier to another, e.g. frequency-changing
    • H03D7/06—Transference of modulation from one carrier to another, e.g. frequency-changing by means of discharge tubes having more than two electrodes
    • H03D7/10—Transference of modulation from one carrier to another, e.g. frequency-changing by means of discharge tubes having more than two electrodes the signals to be mixed being applied between different pairs of electrodes

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
FR720342D 1930-10-21 1930-10-21 Improvements to frequency changers for radio signaling Expired FR720342A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR720342T 1930-10-21

Publications (1)

Publication Number Publication Date
FR720342A true FR720342A (en) 1932-02-18

Family

ID=9092858

Family Applications (1)

Application Number Title Priority Date Filing Date
FR720342D Expired FR720342A (en) 1930-10-21 1930-10-21 Improvements to frequency changers for radio signaling

Country Status (2)

Country Link
BE (1) BE383548A (en)
FR (1) FR720342A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2581177A (en) * 1948-05-11 1952-01-01 Gen Electric Frequency conversion system for superheterodyne radio receivers
US2695952A (en) * 1950-10-31 1954-11-30 Rca Corp Frequency modulation converter circuit

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2581177A (en) * 1948-05-11 1952-01-01 Gen Electric Frequency conversion system for superheterodyne radio receivers
US2695952A (en) * 1950-10-31 1954-11-30 Rca Corp Frequency modulation converter circuit

Also Published As

Publication number Publication date
BE383548A (en)

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