Emergency Alarm Function: In an emergency situation, simply pressing the dedicated alarm key causes the two-way radio to emit an audible alarm at maximum volume or transmit a pre-configured alarm code to other handheld units or base stations, thereby ensuring a timely response.
Carrier Wave: A carrier wave serves as the transmission medium for useful signals-such as voice, digital data, and signaling information. It utilizes high-frequency electromagnetic waves, which facilitate the efficient transmission of signals over long distances. During the modulation process, the required information is encoded onto the carrier wave by altering its specific parameters-such as its amplitude (AM), frequency (FM), or phase (PM).
Channel Spacing: In the context of telecommunications, a "channel" refers to the specific frequency range occupied during the transmission and reception of signals. The frequency difference between adjacent channels is known as "channel spacing," a parameter critical to both the stability and efficiency of communication. Common standards for channel spacing include 25 kHz (wideband) as well as 20 kHz and 12.5 kHz (narrowband).
Scrambling Function: Scrambling is a voice encryption technology designed to ensure the security and privacy of conversations. Typically, both parties involved in a call will enable the scrambling function to prevent potential eavesdropping by other two-way radios operating on the same frequency.
