JPS57178439A - Radio communication device - Google Patents
Radio communication deviceInfo
- Publication number
- JPS57178439A JPS57178439A JP6491181A JP6491181A JPS57178439A JP S57178439 A JPS57178439 A JP S57178439A JP 6491181 A JP6491181 A JP 6491181A JP 6491181 A JP6491181 A JP 6491181A JP S57178439 A JPS57178439 A JP S57178439A
- Authority
- JP
- Japan
- Prior art keywords
- receiver
- signal
- antenna
- transmitter
- received
- 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.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/145—Passive relay systems
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Radio Relay Systems (AREA)
Abstract
PURPOSE:To increase the communication distance of a wireless interphone by improving reception sensitivity, by supplying a signal from a transmitter to a receiver by the antenna of a TV community device. CONSTITUTION:A signal from an outdoor transmitter 11 is emitted from an antenna 12 and then received by an antenna 2. THis received signal from a line 3 is amplified by a booster 4 an then led from a distributor 5 to branching devices 8 and 9 through lines 6 and 7, and a signal from the branching device 8 is received by a TV receiver 10. Thus, a TV community receiver is onstituted. The transmission freuquency of the transmitter 11 is equal to the reception frequency of a receiver 14, and the frequency is set to a value other than frequencies used for TV broadcasting.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6491181A JPS57178439A (en) | 1981-04-27 | 1981-04-27 | Radio communication device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6491181A JPS57178439A (en) | 1981-04-27 | 1981-04-27 | Radio communication device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS57178439A true JPS57178439A (en) | 1982-11-02 |
Family
ID=13271696
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6491181A Pending JPS57178439A (en) | 1981-04-27 | 1981-04-27 | Radio communication device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57178439A (en) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS545610A (en) * | 1977-06-15 | 1979-01-17 | Matsushita Electric Works Ltd | Wireless apparatus |
JPS545611A (en) * | 1977-06-15 | 1979-01-17 | Matsushita Electric Works Ltd | Wireless apparatus |
-
1981
- 1981-04-27 JP JP6491181A patent/JPS57178439A/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS545610A (en) * | 1977-06-15 | 1979-01-17 | Matsushita Electric Works Ltd | Wireless apparatus |
JPS545611A (en) * | 1977-06-15 | 1979-01-17 | Matsushita Electric Works Ltd | Wireless apparatus |
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