FR868642A - Mounting of trunk stations for long distance lines with wire end mounting for carrier frequency - Google Patents
Mounting of trunk stations for long distance lines with wire end mounting for carrier frequencyInfo
- Publication number
- FR868642A FR868642A FR868642DA FR868642A FR 868642 A FR868642 A FR 868642A FR 868642D A FR868642D A FR 868642DA FR 868642 A FR868642 A FR 868642A
- Authority
- FR
- France
- Prior art keywords
- mounting
- carrier frequency
- long distance
- wire end
- distance lines
- 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
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/78—Circuit arrangements in which low-frequency speech signals proceed in one direction on the line, while speech signals proceeding in the other direction on the line are modulated on a high-frequency carrier signal
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE216070X | 1939-12-08 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR868642A true FR868642A (en) | 1942-01-09 |
Family
ID=5827288
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR868642D Expired FR868642A (en) | 1939-12-08 | 1940-12-30 | Mounting of trunk stations for long distance lines with wire end mounting for carrier frequency |
Country Status (4)
Country | Link |
---|---|
US (1) | US2280538A (en) |
BE (1) | BE439775A (en) |
CH (1) | CH216070A (en) |
FR (1) | FR868642A (en) |
-
0
- BE BE439775D patent/BE439775A/xx unknown
-
1940
- 1940-11-04 CH CH216070D patent/CH216070A/en unknown
- 1940-11-27 US US367416A patent/US2280538A/en not_active Expired - Lifetime
- 1940-12-30 FR FR868642D patent/FR868642A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
BE439775A (en) | |
US2280538A (en) | 1942-04-21 |
CH216070A (en) | 1941-07-31 |
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