gamma radiations..
UHF (Ultra High Frequency)
The energy of EM radiation depends on its frequency, and the lowest frequency corresponds to the lowest energy. Radio waves are at the low end of the energy and frequency spectrum.
The range of the visible spectrum is 400THz - 789THz.
Band spectrum is the spectrum given by the molecules. It consists of series of closely spaced lines known as bands separated by the dark spaces.
gamma radiations..
That's the portion of the spectrum that we call "gamma rays".
That would be sound waves, or the audio spectrum.
The lowest frequency is effectively zero and this would be in the extremely low frequency (ELF) band in the sub-radio range of the electromagnetic spectrum.
UHF (Ultra High Frequency)
A band plan is a plan for distributing or allocating bandwidth within a frequency spectrum.
The Ku band of microwave frequencies ranges from 12 to 18 GHz. A frequency of 1GHz is not in the Ku band. There is no correspondence. Is the 1GHz setting on the spectrum analyzer a center frequency? Or is it one of the ends of the spectrum analyzed? Is it the width of the spectrum being analyzed? And if it is the latter, what is its center? Knowing these things will still not change the answer given, but may help to "sort out" a possible problem with the question the way it is written.
Gamma rays
The radio band is the least energetic section of the electromagnetic spectrum.
Scroll down to related links and look at "Frequency spectrum - Wikipedia"
Photons with higher energy correspond to electromagnetic radiation with higher frequency/shorter wavelength. In the visible band, the color with the highest frequency is the last one you can see on the VIOLET end of the spectrum.
Spectrum - band - ended in 1973.