Radios and transmitters include all those devices which convert information, whether a voice or digital data, into an electromagnetic wave which is transmitted into the air via an antenna. These devices operate in reverse at the opposite end, picking up a radio wave from an antenna and converting it back to voice or data.
The most familiar type of radio transmitter is your classic UHF handheld "walkie-talkie", but in fact radios form an integral part of just about every wireless technology. We'll keep to the more conventional fixed/handheld two-way radios in this category, along with transponders and other special purpose transmitters. You'll find equipment for 27 MHz CB, VHF, UHF, and military bands in this section.
When evaluating between two-way radio models, frequency band is crucial, as it determines the radio's ability to communicate over desired distances and through various terrains. UHF radios, for instance, are typically better for urban environments with obstacles, while VHF radios excel in less populated, rural areas. Of course, paying attention to what bands you are legally permitted to operate on is a must. Consideration should also be given to the radio's durability and resistance to environmental factors such as water, dust, and shock, which is particularly important for outdoor or industrial use.
As for technical parameters, Receive Sensitivity determines the radio's ability to pick up weak signals; higher sensitivity allows for clearer communication over longer distances or in challenging environments. Transmit Power is another important parameter, influencing the range and clarity of the transmission; higher power typically extends the communication range but may also increase battery consumption. Frequency Stability is essential for maintaining consistent communication without drift, especially in environments with varying temperatures or when precise frequency adherence is required. Compatibility with existing systems should be assessed to ensure the chosen model not only meets operational demands but integrates seamlessly into current communication networks.
