FR679528A - Device for the transmission or reception of short waves - Google Patents

Device for the transmission or reception of short waves

Info

Publication number
FR679528A
FR679528A FR679528DA FR679528A FR 679528 A FR679528 A FR 679528A FR 679528D A FR679528D A FR 679528DA FR 679528 A FR679528 A FR 679528A
Authority
FR
France
Prior art keywords
reception
transmission
short waves
waves
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
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.)
Telefunken AG
Original Assignee
Telefunken AG
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 AG, Telefunken Gesellschaft fuer Drahtlose Telegraphie mbH filed Critical Telefunken AG
Application granted granted Critical
Publication of FR679528A publication Critical patent/FR679528A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
    • H03B5/00—Generation of oscillations using amplifier with regenerative feedback from output to input
    • H03B5/30—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator
    • H03B5/32—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator being a piezoelectric resonator
    • H03B5/34—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator being a piezoelectric resonator active element in amplifier being vacuum tube
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
    • H03B21/00—Generation of oscillations by combining unmodulated signals of different frequencies
    • H03B21/01—Generation of oscillations by combining unmodulated signals of different frequencies by beating unmodulated signals of different frequencies
FR679528D 1928-09-10 1929-07-30 Device for the transmission or reception of short waves Expired FR679528A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1901043X 1928-09-10

Publications (1)

Publication Number Publication Date
FR679528A true FR679528A (en) 1930-04-14

Family

ID=7748386

Family Applications (1)

Application Number Title Priority Date Filing Date
FR679528D Expired FR679528A (en) 1928-09-10 1929-07-30 Device for the transmission or reception of short waves

Country Status (2)

Country Link
US (1) US1901043A (en)
FR (1) FR679528A (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2457134A (en) * 1944-02-28 1948-12-28 Collins Radio Co Radio system for transmission and reception on the same frequency
CH246545A (en) * 1945-07-26 1947-01-15 Patelhold Patentverwertung Device for generating at least one integral multiple of a basic frequency.
US2557817A (en) * 1948-09-30 1951-06-19 Rca Corp Alternating current frequency measuring
US2666140A (en) * 1949-11-16 1954-01-12 Wallace Marcel Beat frequency oscillator
US2760074A (en) * 1951-12-20 1956-08-21 Itt Frequency generator

Also Published As

Publication number Publication date
US1901043A (en) 1933-03-14

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