BE476953A - - Google Patents
Info
- Publication number
- BE476953A BE476953A BE476953DA BE476953A BE 476953 A BE476953 A BE 476953A BE 476953D A BE476953D A BE 476953DA BE 476953 A BE476953 A BE 476953A
- Authority
- BE
- Belgium
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/40—Circuits
- H04B1/54—Circuits using the same frequency for two directions of communication
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/40—Circuits
- H04B1/44—Transmit/receive switching
- H04B1/46—Transmit/receive switching by voice-frequency signals; by pilot signals
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Selective Calling Equipment (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US450499A US2330593A (en) | 1942-07-11 | 1942-07-11 | High frequency communication system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE476953A true BE476953A (en:Method) |
Family
ID=23788338
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE476953D BE476953A (en:Method) | 1942-07-11 |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US2330593A (en:Method) |
| BE (1) | BE476953A (en:Method) |
| FR (1) | FR950377A (en:Method) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR959684A (en:Method) * | 1941-04-11 | 1950-03-31 | ||
| US2516361A (en) * | 1945-08-21 | 1950-07-25 | Gen Railway Signal Co | Voice frequency signal device |
-
0
- BE BE476953D patent/BE476953A/xx unknown
-
1942
- 1942-07-11 US US450499A patent/US2330593A/en not_active Expired - Lifetime
-
1947
- 1947-07-21 FR FR950377D patent/FR950377A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR950377A (fr) | 1949-09-26 |
| US2330593A (en) | 1943-09-28 |