CA2036788A1 - Radio receiver operational checking method and system - Google Patents
Radio receiver operational checking method and systemInfo
- Publication number
- CA2036788A1 CA2036788A1 CA2036788A CA2036788A CA2036788A1 CA 2036788 A1 CA2036788 A1 CA 2036788A1 CA 2036788 A CA2036788 A CA 2036788A CA 2036788 A CA2036788 A CA 2036788A CA 2036788 A1 CA2036788 A1 CA 2036788A1
- Authority
- CA
- Canada
- Prior art keywords
- radio
- squelch
- radio receiver
- pulse source
- radios
- 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.)
- Granted
Links
Landscapes
- Monitoring And Testing Of Transmission In General (AREA)
- Circuits Of Receivers In General (AREA)
Abstract
A clock-driven pulse source is used to apply repetitive short pulses to the squelch control connection point of the squelch circuitry of a radio receiver to deactivate momentarily the squelch circuitry at regular intervals. This provides periodic noise bursts of "de-squelch" pulses on an otherwise silent radio in order to inform the radio operator that the radio is live and that the volume is adequate. A light may also be connected to the system to provide a second, visual, indicator of the operational status of the radio.
This radio receiver operational checking system may also be utilized where there are two or more radios in use by providing an additional clock-driven pulse source for each radio in use. The system may be arranged so that the status of individual radios may be quickly ascertained by sound and/or by light indicators.
This radio receiver operational checking system may also be utilized where there are two or more radios in use by providing an additional clock-driven pulse source for each radio in use. The system may be arranged so that the status of individual radios may be quickly ascertained by sound and/or by light indicators.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA 2036788 CA2036788C (en) | 1991-02-21 | 1991-02-21 | Radio receiver operational checking method and system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA 2036788 CA2036788C (en) | 1991-02-21 | 1991-02-21 | Radio receiver operational checking method and system |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2036788A1 true CA2036788A1 (en) | 1992-08-22 |
CA2036788C CA2036788C (en) | 1999-02-16 |
Family
ID=4147027
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA 2036788 Expired - Fee Related CA2036788C (en) | 1991-02-21 | 1991-02-21 | Radio receiver operational checking method and system |
Country Status (1)
Country | Link |
---|---|
CA (1) | CA2036788C (en) |
-
1991
- 1991-02-21 CA CA 2036788 patent/CA2036788C/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
CA2036788C (en) | 1999-02-16 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
EEER | Examination request | ||
MKLA | Lapsed |