DC-to-Daylight Monitoring

Technical References

ELF Extremely Low Frequency 3-30 Hz
ULF Ultra Low Frequency 30-300 Hz
VLF Very Low Frequency 3-30 KHz
LF Low Frequency 30-300 KHz
MF Medium Frequency 300-3000 KHz
HF High Frequency 3-30 MHz
VHF Very High Frequency 30-300 MHz
UHF Ultra High Frequency 300-3000 MHz
SHF Super High Frequency 3-30 GHz
EHF Extra High Frequency 30-300 GHz

HF Radio Handbook

VHF/UHF Handbook