JPH0436334U - - Google Patents
Info
- Publication number
- JPH0436334U JPH0436334U JP1990077444U JP7744490U JPH0436334U JP H0436334 U JPH0436334 U JP H0436334U JP 1990077444 U JP1990077444 U JP 1990077444U JP 7744490 U JP7744490 U JP 7744490U JP H0436334 U JPH0436334 U JP H0436334U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- squelch
- tone
- low frequency
- tone squelch
- 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
- 230000003321 amplification Effects 0.000 claims description 5
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 5
- 238000000034 method Methods 0.000 claims 1
- 238000012544 monitoring process Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Transceivers (AREA)
- Noise Elimination (AREA)
Description
第１図は本考案の一実施例を示すブロツク図、
第２図は従来の実施例を示す。
１……第２混合、中間周波増幅復調、スケルチ
用多機能ＩＣ、２……低周波増幅部、３……ボリ
ユーム、４，５……抵抗、６，１２……トランジ
スタ、７……低周波電力増幅ＩＣ、８……スピー
カ、９……スイツチ回路、１０……モニタランプ
、１１……トーンスケルチ回路。
FIG. 1 is a block diagram showing an embodiment of the present invention.
FIG. 2 shows a conventional embodiment. 1... Multi-function IC for second mixing, intermediate frequency amplification and demodulation, squelch, 2... Low frequency amplification section, 3... Volume, 4, 5... Resistor, 6, 12... Transistor, 7... Low frequency Power amplification IC, 8...Speaker, 9...Switch circuit, 10...Monitor lamp, 11...Tone squelch circuit.
Claims (1)
御される着信表示回路、抵抗とトランジスタから
なる減衰回路、低周波電力増幅部、ノイズスケル
チ電圧で着信表示回路および低周波電力増幅部を
制御するスイツチ回路、およびトーンスケルチ回
路とから構成されるトーンスケルチ付携帯無線機
において、トーンスケルケ回路制御出力と低周波
電力増幅部制御端子間にスイツチ回路を設け本ス
イツチの制御によりトーンスケルチのモニタ方式
を切換えることを特徴としたトーンスケルチ回路
。 A noise squelch circuit, an incoming call display circuit controlled by the noise squelch voltage, an attenuation circuit consisting of a resistor and a transistor, a low frequency power amplification section, a switch circuit that controls the incoming call display circuit and low frequency power amplification section by the noise squelch voltage, and a tone squelch. A tone squelch circuit comprising a tone squelch portable radio device comprising a tone squelch circuit, characterized in that a switch circuit is provided between a tone squelch circuit control output and a low frequency power amplifier control terminal, and a tone squelch monitoring method is switched by controlling the switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990077444U JPH0436334U (en) | 1990-07-23 | 1990-07-23 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990077444U JPH0436334U (en) | 1990-07-23 | 1990-07-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0436334U true JPH0436334U (en) | 1992-03-26 |
Family
ID=31619839
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1990077444U Pending JPH0436334U (en) | 1990-07-23 | 1990-07-23 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0436334U (en) |
-
1990
- 1990-07-23 JP JP1990077444U patent/JPH0436334U/ja active Pending
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