Radio Communication Frequency Change Control
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Solution Overview
Problem
Conventional radio communication devices often change the voice communication frequency to a QSY frequency without ensuring that voice transmission or reception is possible, leading to difficulties in reverting to the original frequency when conditions are not met.
Innovation Solution
A radio communication device with a determiner to assess whether the voice communication frequency can be changed to a QSY frequency based on predetermined conditions, and a frequency change controller to either change or maintain the frequency accordingly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the voice communication frequency is changed to the QSY frequency without checking conditions, then the adaptability of the radio communication device is improved, but the reliability of voice transmission and reception deteriorates
Solution Approach 1:
The system performs preliminary checks of predetermined conditions (distance, communication environment, signal strength) before changing the voice communication frequency to the QSY frequency. This ensures that frequency changes only occur when communication reliability can be maintained, resolving the contradiction between adaptability and reliability.
2Ease of operation
If the voice communication frequency is changed without condition verification, then the ease of operation is improved, but the difficulty of returning to the original frequency increases
Solution Approach 1:
The system provides feedback by monitoring whether predetermined conditions are satisfied before allowing frequency changes. This feedback mechanism prevents unnecessary or inappropriate frequency changes, simplifying frequency management while maintaining operational ease. The automatic condition checking eliminates the need for manual verification and complex user decisions.
3Reliability
If condition checking is added before frequency change, then the reliability of voice communication is improved, but the device complexity increases
Solution Approach 1:
The radio communication device performs self-service by automatically checking predetermined conditions (distance, signal strength, communication environment) and making decisions about frequency changes without requiring complex external control systems or user intervention. This self-service approach maintains reliability while minimizing the added complexity to the control system.
Data Source
AI summary
A determiner determines that the voice communication frequency of the voice band to be used by a subject station for a voice communication with a distant station is permitted to be changed to the voice communication frequency of a selected distant station, the voice communication frequency of the selected distant station being included in predetermined information disclosed by the selected distant station, when the predetermined information satisfies a predetermined condition set in the subject station. When an instruction to change the voice communication frequency to the voice communication frequency of the selected distant station is issued, a frequency change controller performs a control to change the voice communication frequency if the determiner determines that the voice communication frequency is permitted to be changed.