What is a Radio RF Carrier wave?

"RF carrier: This wave is necessary in order to deliver the frequency wave deeper in to the body."
https://www.agentnateur.com/blogs/agent-tips/benefits-of-the-royal-rife

"Radio RF Carrier wave is necessary in order to piggyback the frequency wave deeper in to the body. The most important feature to look for in a quality Rife machine is a RF carrier (Radio Frequency). Royal Rife and Hoyland used RF which was a big part of their success."
http://rifemachineblog.net/buyers-guide-to-rife-generators/

"Rife utilized a radio frequency generator that produced between 100 and 150 Watts of power with a carrier frequency between 3.1 Mhz and 35 Mhz."
https://robertcathey.wordpress.com/royal-rife-revisited-reconstruction-of-the-original-rife-ray-tube/

"He discovered that he needed two different frequencies at the same time. With a combination of a higher and a lower frequency at the 11th harmonic, the higher one is 11 times the frequency of the lower one. He realized that adding frequencies so that multiple waves were hitting the cancer cells would be like increasing the power of the signal.

After adding the 11th frequency to the test on cancer cells, he noticed a strange phenomenon. The cells looked like they had been shattered, like a high note shattering a crystal glass. The outer wall of the cancer cell broke and the contents of the cell spilled out."
https://www.powerofpositivity.com/sound-technology-kills-cancer-cells-without-chemo-radiation/

"Most of the frequency generators that these companies build use only "Low Audio Frequencies" without any RF carrier frequency capability. They use the low audio frequencies which were used in the 1936/1939 Rife Ray #5 or Beam Ray Clinical Rife Machine and the 1953 AZ-58 instrument. But they ignore and do not recognize the importance of the RF carrier frequency Dr. Rife's machines used which had to be combined with the low audio frequencies to produce higher harmonics of Dr. Rife's original frequencies. Without the specific carrier frequency matched to the audio frequency Dr. Rife's higher RF frequency is not produced. (These "Low Audio Frequencies" will be discussed later)."

"The idea that high RF frequencies or a carrier wave is un-necessary would eliminate the whole method Dr. Rife used to devitalize microorganisms"
https://www.rifevideos.com/chapter_4_are_dr_rifes_rf_frequencies_safe_to_use.html