JPH0446729U - - Google Patents
Info
- Publication number
- JPH0446729U JPH0446729U JP1990088712U JP8871290U JPH0446729U JP H0446729 U JPH0446729 U JP H0446729U JP 1990088712 U JP1990088712 U JP 1990088712U JP 8871290 U JP8871290 U JP 8871290U JP H0446729 U JPH0446729 U JP H0446729U
- Authority
- JP
- Japan
- Prior art keywords
- door
- circuit
- receiving
- inspection
- checks
- 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
- 238000007689 inspection Methods 0.000 claims description 3
- 230000002265 prevention Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
- 239000000470 constituent Substances 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
Landscapes
- Monitoring And Testing Of Transmission In General (AREA)
- Circuits Of Receivers In General (AREA)
Description
第１図は本考案の一実施例を示すブロツク図で
あり、第２図はこの考案の他の実施例を示すブロ
ツク図、第３図は従来の受信機（戸別受信機）の
一実施例を示すブロツク図である。なお各図とも
構成要素の符号と名称は同一である。
図において、１は空中線、２は受信回路、３は
局部発振回路、４は増幅器、５は選択呼出受信回
路、６はスピーカ、７は点検回路、８は送信回路
、９は空中線を示す。なお図中、同一符号は同一
、または相当部分を示す
Fig. 1 is a block diagram showing one embodiment of the present invention, Fig. 2 is a block diagram showing another embodiment of this invention, and Fig. 3 is an embodiment of a conventional receiver (house-to-house receiver). FIG. Note that the symbols and names of the constituent elements are the same in each figure. In the figure, 1 is an antenna, 2 is a receiving circuit, 3 is a local oscillation circuit, 4 is an amplifier, 5 is a selective call receiving circuit, 6 is a speaker, 7 is an inspection circuit, 8 is a transmitting circuit, and 9 is an antenna. In the figures, the same symbols indicate the same or equivalent parts.
Claims (1)
て、外部からの無線制御信号を受けて、自己の受
信機能を点検する点検回路と、点検結果を送信す
るための微弱な送信回路とを備えた受信機。 A door-to-door receiver used for municipal disaster prevention radio, etc., which is equipped with an inspection circuit that checks its own receiving function upon receiving a wireless control signal from the outside, and a weak transmitter circuit that transmits the inspection results. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990088712U JPH0446729U (en) | 1990-08-24 | 1990-08-24 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990088712U JPH0446729U (en) | 1990-08-24 | 1990-08-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0446729U true JPH0446729U (en) | 1992-04-21 |
Family
ID=31822170
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1990088712U Pending JPH0446729U (en) | 1990-08-24 | 1990-08-24 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0446729U (en) |
-
1990
- 1990-08-24 JP JP1990088712U patent/JPH0446729U/ja active Pending
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