CH227037A - Two-way amplifier in a carrier frequency overhead line system. - Google Patents
Two-way amplifier in a carrier frequency overhead line system.Info
- Publication number
- CH227037A CH227037A CH227037DA CH227037A CH 227037 A CH227037 A CH 227037A CH 227037D A CH227037D A CH 227037DA CH 227037 A CH227037 A CH 227037A
- Authority
- CH
- Switzerland
- Prior art keywords
- carrier frequency
- line system
- overhead line
- way amplifier
- frequency overhead
- Prior art date
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
- F02M59/44—Details, components parts, or accessories not provided for in, or of interest apart from, the apparatus of groups F02M59/02 - F02M59/42; Pumps having transducers, e.g. to measure displacement of pump rack or piston
- F02M59/46—Valves
- F02M59/462—Delivery valves
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B3/00—Line transmission systems
- H04B3/02—Details
- H04B3/36—Repeater circuits
- H04B3/38—Repeater circuits for signals in two different frequency ranges transmitted in opposite directions over the same transmission path
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J1/00—Frequency-division multiplex systems
- H04J1/02—Details
- H04J1/10—Intermediate station arrangements, e.g. for branching, for tapping-off
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Amplifiers (AREA)
- Radio Relay Systems (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DES132926D DE722561C (en) | 1938-07-10 | 1938-07-10 | Amplifier for overhead lines running between remote offices |
DES143413D DE738068C (en) | 1938-07-10 | 1940-12-22 | Amplifier for overhead lines running between remote offices |
Publications (1)
Publication Number | Publication Date |
---|---|
CH227037A true CH227037A (en) | 1943-05-15 |
Family
ID=42224776
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH227037D CH227037A (en) | 1938-07-10 | 1941-12-31 | Two-way amplifier in a carrier frequency overhead line system. |
Country Status (3)
Country | Link |
---|---|
CH (1) | CH227037A (en) |
DE (2) | DE722561C (en) |
FR (2) | FR857472A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1997018642A1 (en) * | 1995-11-14 | 1997-05-22 | Allen Telecom Inc. | Bi-directional amplifiers and signal channels for frequency division duplex communications |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE960550C (en) * | 1942-02-01 | 1957-03-21 | Siemens Ag | Carrier-frequency message transmission system |
US4392220A (en) * | 1980-05-30 | 1983-07-05 | Nippon Electric Co., Ltd. | Modem to be coupled to a directional transmission line of an SS multiplex communication network |
-
1938
- 1938-07-10 DE DES132926D patent/DE722561C/en not_active Expired
-
1939
- 1939-07-07 FR FR857472D patent/FR857472A/en not_active Expired
-
1940
- 1940-12-22 DE DES143413D patent/DE738068C/en not_active Expired
-
1941
- 1941-12-17 FR FR51876D patent/FR51876E/en not_active Expired
- 1941-12-31 CH CH227037D patent/CH227037A/en unknown
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1997018642A1 (en) * | 1995-11-14 | 1997-05-22 | Allen Telecom Inc. | Bi-directional amplifiers and signal channels for frequency division duplex communications |
Also Published As
Publication number | Publication date |
---|---|
DE738068C (en) | 1943-08-02 |
FR51876E (en) | 1943-05-24 |
DE722561C (en) | 1942-07-13 |
FR857472A (en) | 1940-09-14 |
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