ES454180A1 - Perfeccionamientos en los sistemas para la emision subacuati-ca de oscilaciones moduladas en frecuencia. - Google Patents

Perfeccionamientos en los sistemas para la emision subacuati-ca de oscilaciones moduladas en frecuencia.

Info

Publication number
ES454180A1
ES454180A1 ES454180A ES454180A ES454180A1 ES 454180 A1 ES454180 A1 ES 454180A1 ES 454180 A ES454180 A ES 454180A ES 454180 A ES454180 A ES 454180A ES 454180 A1 ES454180 A1 ES 454180A1
Authority
ES
Spain
Prior art keywords
multivibrator
systems
modulated oscillations
frequency modulated
underwater emission
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
ES454180A
Other languages
English (en)
Spanish (es)
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.)
Efa Elektrofunkgeraete
Original Assignee
Efa Elektrofunkgeraete
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 Efa Elektrofunkgeraete filed Critical Efa Elektrofunkgeraete
Publication of ES454180A1 publication Critical patent/ES454180A1/es
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B11/00—Transmission systems employing sonic, ultrasonic or infrasonic waves

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physical Water Treatments (AREA)
  • Transducers For Ultrasonic Waves (AREA)
  • Magnetic Resonance Imaging Apparatus (AREA)
  • Water Treatment By Electricity Or Magnetism (AREA)
ES454180A 1975-12-17 1976-12-13 Perfeccionamientos en los sistemas para la emision subacuati-ca de oscilaciones moduladas en frecuencia. Expired ES454180A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1634875A CH588789A5 (cs) 1975-12-17 1975-12-17

Publications (1)

Publication Number Publication Date
ES454180A1 true ES454180A1 (es) 1977-12-01

Family

ID=4416556

Family Applications (1)

Application Number Title Priority Date Filing Date
ES454180A Expired ES454180A1 (es) 1975-12-17 1976-12-13 Perfeccionamientos en los sistemas para la emision subacuati-ca de oscilaciones moduladas en frecuencia.

Country Status (13)

Country Link
JP (1) JPS5286761A (cs)
AU (1) AU504754B2 (cs)
BR (1) BR7608462A (cs)
CH (1) CH588789A5 (cs)
DE (1) DE2656969A1 (cs)
DK (1) DK565876A (cs)
ES (1) ES454180A1 (cs)
FI (1) FI763585A7 (cs)
FR (1) FR2336006A1 (cs)
GB (1) GB1513200A (cs)
NL (1) NL7613846A (cs)
NO (1) NO764241L (cs)
ZA (1) ZA767342B (cs)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5413748U (cs) * 1977-06-30 1979-01-29
GB2119980B (en) * 1982-05-11 1985-10-16 Madelyn Carrol Freeman A device for use by a diver to give a signal
DE59103450D1 (de) * 1991-01-04 1994-12-08 Joergen Brosow Verfahren und vorrichtung zum übertragen eines informationssignals.

Also Published As

Publication number Publication date
DE2656969A1 (de) 1977-07-07
NL7613846A (nl) 1977-06-21
AU2046476A (en) 1978-06-15
BR7608462A (pt) 1977-11-29
FR2336006A1 (fr) 1977-07-15
DK565876A (da) 1977-06-18
FI763585A7 (cs) 1977-06-18
GB1513200A (en) 1978-06-07
NO764241L (cs) 1977-06-20
JPS5286761A (en) 1977-07-19
ZA767342B (en) 1977-11-30
AU504754B2 (en) 1979-10-25
FR2336006B3 (cs) 1979-01-19
CH588789A5 (cs) 1977-06-15

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