CH372350A - Empfangseinrichtung für Tonfrequenzsignale - Google Patents
Empfangseinrichtung für TonfrequenzsignaleInfo
- Publication number
- CH372350A CH372350A CH6230758A CH6230758A CH372350A CH 372350 A CH372350 A CH 372350A CH 6230758 A CH6230758 A CH 6230758A CH 6230758 A CH6230758 A CH 6230758A CH 372350 A CH372350 A CH 372350A
- Authority
- CH
- Switzerland
- Prior art keywords
- receiving device
- audio frequency
- frequency signals
- signals
- audio
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q1/00—Details of selecting apparatus or arrangements
- H04Q1/18—Electrical details
- H04Q1/30—Signalling arrangements; Manipulation of signalling currents
- H04Q1/44—Signalling arrangements; Manipulation of signalling currents using alternate current
- H04Q1/444—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies
- H04Q1/446—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using one signalling frequency
- H04Q1/4465—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using one signalling frequency the same frequency being used for all signalling information, e.g. A.C. nr.9 system
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL219653 | 1957-08-06 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH372350A true CH372350A (de) | 1963-10-15 |
Family
ID=29244857
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH6230758A CH372350A (de) | 1957-08-06 | 1958-07-28 | Empfangseinrichtung für Tonfrequenzsignale |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH372350A (de) |
-
1958
- 1958-07-28 CH CH6230758A patent/CH372350A/de unknown
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