CH538784A - Receiving station for VHF audio broadcast signals - Google Patents

Receiving station for VHF audio broadcast signals

Info

Publication number: CH538784A
Authority: CH; Switzerland
Prior art keywords: receiving station; broadcast signals; audio broadcast; vhf; vhf audio
Prior art date: 1971-08-13

Application number

Other languages

German (de)

Inventor

Ludwig Otto

Schalamon Friedrich

Original Assignee

Siemens Ag

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.)

1971-08-13

Filing date

1972-04-26

Publication date

1973-08-15

1971-08-13 Priority claimed from DE19712140680 external-priority patent/DE2140680C3/en

1972-04-26 Application filed by Siemens Ag filed Critical Siemens Ag

1973-08-15 Publication of CH538784A publication Critical patent/CH538784A/en

Classifications

- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G3/00—Gain control in amplifiers or frequency changers
- H03G3/20—Automatic control
- H03G3/30—Automatic control in amplifiers having semiconductor devices
- H03G3/3052—Automatic control in amplifiers having semiconductor devices in bandpass amplifiers (H.F. or I.F.) or in frequency-changers used in a (super)heterodyne receiver
- 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
- H03D7/16—Multiple-frequency-changing
- H03D7/161—Multiple-frequency-changing all the frequency changers being connected in cascade
- H03D7/163—Multiple-frequency-changing all the frequency changers being connected in cascade the local oscillations of at least two of the frequency changers being derived from a single oscillator
- 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
- H03D7/18—Modifications of frequency-changers for eliminating image frequencies

Landscapes

Engineering & Computer Science (AREA)
Power Engineering (AREA)
Superheterodyne Receivers (AREA)
Transmitters (AREA)
Stereo-Broadcasting Methods (AREA)

CH538784D 1971-08-13 1972-04-26 Receiving station for VHF audio broadcast signals CH538784A (en)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
DE19712140680 DE2140680C3 (en)		1971-08-13	Receiving station for VHF audio broadcast signals
DE19792902650 DE2902650A1 (en)	1971-08-13	1979-01-24	RECEIVING CENTER FOR VHF SOUND BROADCAST SIGNALS

Publications (1)

Publication Number	Publication Date
CH538784A true CH538784A (en)	1973-08-15

Family

ID=25761597

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
CH538784D CH538784A (en)	1971-08-13	1972-04-26	Receiving station for VHF audio broadcast signals

Country Status (4)

Country	Link
CH (1)	CH538784A (en)
DE (1)	DE2902650A1 (en)
GB (1)	GB1324679A (en)
NL (2)	NL175867C (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US6115363A (en) *	1997-02-19	2000-09-05	Nortel Networks Corporation	Transceiver bandwidth extension using double mixing
EP1710907A1 (en) *	2005-04-05	2006-10-11	Siemens Schweiz AG	System for power optimized audio signals reproduction

1972
- 1972-04-26 CH CH538784D patent/CH538784A/en not_active IP Right Cessation
- 1972-06-20 NL NL7208423A patent/NL175867C/en not_active IP Right Cessation
- 1972-07-05 GB GB3136972A patent/GB1324679A/en not_active Expired
1979
- 1979-01-24 DE DE19792902650 patent/DE2902650A1/en not_active Ceased
1980
- 1980-01-24 NL NL8000468A patent/NL8000468A/en not_active Application Discontinuation

Also Published As

Publication number	Publication date
NL175867B (en)	1984-08-01
DE2140680A1 (en)	1973-02-22
NL8000468A (en)	1980-07-28
DE2902650A1 (en)	1980-07-31
NL7208423A (en)	1973-02-15
GB1324679A (en)	1973-07-25
NL175867C (en)	1985-01-02
DE2140680B2 (en)	1976-04-08

Similar Documents

Publication	Publication Date	Title
CA1008571A (en)	1977-04-12	Electronic tuner for broadcast receiver
AT300894B (en)	1972-08-10	Radio receiver for single sideband reception
CA961184A (en)	1975-01-14	Audio multifrequency signal receiver
CA929606A (en)	1973-07-03	Fm stereophonic receiver
ZA7593B (en)	1976-04-28	Audio frequency squelch system
CH538784A (en)	1973-08-15	Receiving station for VHF audio broadcast signals
AT321380B (en)	1975-03-25	Receiver for video signals
CA972816A (en)	1975-08-12	Radio receivers
CH530122A (en)	1972-10-31	Audio frequency filter for ripple control receivers
IT964197B (en)	1974-01-21	TUNING INDICATOR FOR RADIO FREQUENCY RECEIVERS
KR780000452B1 (en)	1978-10-23	Four channel stereophonic system
AU473231B2 (en)	1976-06-17	Horiszontal defelction circuit for television receivers
CA970845A (en)	1975-07-08	Tuner for television broadcast receiver
ZA718603B (en)	1973-05-30	Broadcast antenna assembly
CA956005A (en)	1974-10-08	Fm stereo receiver
CA934455A (en)	1973-09-25	Radio tuning apparatus
AU6280073A (en)	1975-05-22	Wide band antennas for high frequencies
AU3819272A (en)	1973-07-26	Signal booster for radio receiver
CA866433A (en)	1971-03-16	Audio squelch circuit for time division diplexed television
IT963841B (en)	1974-01-21	RECEIVING STATION FOR ULTRA-SHORT WAVE BROADCAST SIGNALS
SE397461B (en)	1977-10-31	FREQUENCY SELECTIVE SIGNAL RECEIVER FOR TELECOMMUNICATIONS
AT321989B (en)	1975-04-25	BACK PANEL FOR TELEVISION OR BROADCAST RECEIVER HOUSING
CA1015476A (en)	1977-08-09	Electronic tuner for broadcast receiver
CA1016281A (en)	1977-08-23	Electronic tuner for broadcast receiver
CA941907A (en)	1974-02-12	Stereophonic fm receivers having decoders employing field effect transistors

Legal Events

Date	Code	Title	Description
1985-12-31	PL	Patent ceased