UHF, VHF, HF and LF

In amateur radio, also known as ham radio, UHF (ultra-high-frequency), VHF (very-high-frequency), HF (high-frequency), and LF (low-frequency) refer to different radio frequency bands that are used for communication.

UHF bands are radio frequencies that range from 300 MHz to 3 GHz, and they are often used for local or regional communication. UHF bands are popular among hams because they can provide good coverage over short to medium distances, and they are often less crowded than some of the other frequency bands.

VHF bands are radio frequencies that range from 30-300 MHz, and they are often used for local or regional communication. VHF bands are popular among hams because they can provide good coverage over short to medium distances, and they are often less crowded than some of the other frequency bands.

HF bands are radio frequencies that range from 3-30 MHz, and they are used for long-distance communication, often across continents or even around the globe. HF bands are popular among hams because they can be used to communicate with other hams around the world, and they can often be used to bypass local interference or other obstacles.

LF bands are radio frequencies that range from 30-300 kHz, and they are used for very long-distance communication, often across continents or even around the globe. LF bands are less commonly used than HF bands in ham radio, as they can be more challenging to work with due to atmospheric conditions and other factors. However, they can be useful for certain types of communication, such as during emergencies or when other modes are not available.

In general, hams use a variety of frequency bands and modes to communicate with each other, and the choice of frequency band and mode will depend on the specific needs and goals of the communication. Some hams may prefer to use UHF or VHF bands for local communication, while others may use HF (high-frequency) or LF (low-frequency) bands for long-distance communication.