The Voice-Activated Transmission (VOX) function is a feature found in many two-way radios that enables hands-free operation. When the VOX feature is activated, the radio automatically transmits your voice without the need to press any buttons. This allows you to communicate freely and conveniently, especially in situations where manual operation may be cumbersome or impractical.
Here's how the VOX function typically works:
Activation Sensitivity: The VOX feature allows you to adjust the sensitivity level to control when the radio starts transmitting. Higher sensitivity settings mean the radio is more likely to detect even low-volume sounds and begin transmitting, while lower sensitivity settings require louder sounds to trigger transmission.
Microphone Detection: Two-way radios with VOX employ a built-in microphone that senses sound waves. When you speak into the microphone, the radio detects the audio signal and initiates transmission.
Hands-Free Operation: With VOX enabled, you don't need to press and hold a push-to-talk (PTT) button to transmit your voice. The radio automatically switches to transmit mode as soon as it detects your voice, allowing you to communicate without physically interacting with the radio.
Transmission Threshold: To avoid unnecessary transmission triggered by background noise or unintended sounds, two-way radios with VOX typically include a transmission threshold. This threshold establishes a minimum sound level required to activate transmission. It ensures that only deliberate and audible speech triggers the radio to transmit, reducing unintentional transmissions.
The VOX function is particularly valuable in situations where your hands are occupied or when manual operation of the radio may be inconvenient, such as when hiking, climbing, or participating in hands-on activities. It allows for seamless and uninterrupted communication by eliminating the need to press a button each time you want to transmit.
It's important to note that when using VOX, you should be mindful of your surroundings and the potential for unintended audio triggering transmission. Loud background noises, wind, or other participants' conversations may activate the VOX feature unintentionally, leading to interference or disrupted communication. Adjusting the sensitivity level to an appropriate setting and periodically testing the VOX function in your specific environment can help optimize its performance and minimize unintended transmissions.
