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US2044229A - Ultra-short wave auxiliary apparatus for radio receivers - Google Patents

Ultra-short wave auxiliary apparatus for radio receivers Download PDF

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Publication number
US2044229A
US2044229A US700283A US70028333A US2044229A US 2044229 A US2044229 A US 2044229A US 700283 A US700283 A US 700283A US 70028333 A US70028333 A US 70028333A US 2044229 A US2044229 A US 2044229A
Authority
US
United States
Prior art keywords
tube
ultra
aerial
condenser
circuit
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 - Lifetime
Application number
US700283A
Other languages
English (en)
Inventor
Schlesinger Kurt
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
Application granted granted Critical
Publication of US2044229A publication Critical patent/US2044229A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B15/00—Suppression or limitation of noise or interference
    • H04B15/02—Reducing interference from electric apparatus by means located at or near the interfering apparatus
    • H04B15/04—Reducing interference from electric apparatus by means located at or near the interfering apparatus the interference being caused by substantially sinusoidal oscillations, e.g. in a receiver or in a tape-recorder
    • H04B15/06—Reducing interference from electric apparatus by means located at or near the interfering apparatus the interference being caused by substantially sinusoidal oscillations, e.g. in a receiver or in a tape-recorder by local oscillators of receivers
    • 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
    • H03D7/08—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 the same two electrodes

Definitions

  • the secondary coil (approximately 100 windings) is preferably encompassed by the primary coil (approximately 400 windings), and a tight coupling is thus obtained. It has been found convenient to select the average coil diameter at approximately mm. The diameter of the wire amounts in the case of the primary coil to .1 'mm.', whilst in the case of 'thesecondary coil it is .3 mm.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Circuits Of Receivers In General (AREA)
  • Superheterodyne Receivers (AREA)
  • Amplifiers (AREA)
  • Microwave Amplifiers (AREA)
US700283A 1932-12-03 1933-11-29 Ultra-short wave auxiliary apparatus for radio receivers Expired - Lifetime US2044229A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DER102329D DE714587C (de) 1932-12-03 1932-12-03 Ultrakurzwellenvorsatzgeraet

Publications (1)

Publication Number Publication Date
US2044229A true US2044229A (en) 1936-06-16

Family

ID=6477603

Family Applications (1)

Application Number Title Priority Date Filing Date
US700283A Expired - Lifetime US2044229A (en) 1932-12-03 1933-11-29 Ultra-short wave auxiliary apparatus for radio receivers

Country Status (5)

Country Link
US (1) US2044229A (fr)
BE (1) BE400079A (fr)
DE (1) DE714587C (fr)
FR (1) FR764942A (fr)
GB (2) GB429419A (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE880326C (de) * 1948-10-02 1953-06-22 Telefunken Gmbh Gemeinschafts-Rundfunk-Empfangsanlage
NL148283B (nl) * 1949-03-03 Grove Mfg Co Meerdelige, hydraulisch telescopeerbare kraanarm.

Also Published As

Publication number Publication date
GB413195A (en) 1934-07-12
FR764942A (fr) 1934-05-30
BE400079A (fr) 1934-01-31
GB429419A (en) 1935-05-29
DE714587C (de) 1941-12-03

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