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Comparisons: Choosing the Right Machine

Most people who are looking to purchase a frequency generator have in some way or another heard of the work of doctors using them for research back in the 1930's and 1940s. They also want to purchase a frequency generator that can output the frequencies which were discovered back then. The GB-4000 can output all of Dr. Rife's original frequencies. But what most people do not understand is almost all of the frequency generators on the market today, that claim to be of the design and specifications of that era, cannot output any of those higher frequencies. On some of the earlier lab notes from the 1920’s there are frequencies in the 17 million Hertz or cycles per second range. The 1930’s frequencies ranged from 139,200 Hertz or cycles per second to 1,607,450 Hertz. In 1936 those frequencies were multiplied up in harmonic steps to the 3 million Hertz range. This was done because the original 1930’s frequencies were in the AM radio band of frequencies and could interfere with AM radio stations.

Woman making a decision

You would think that if a company was going to call their machine after a prominent frequency researcher of his day they would at least be able to output the original frequencies he discovered. But this is not the case; most of the instruments sold today only output low audio frequencies below 22,000 Hertz. Because the 1930’s/1950’s original instruments also used low audio frequencies, many manufacturers only use these low audio frequencies without also using the high RF carrier frequency in the 3 million Hertz range. These low audio frequencies were modulated or piggy-backed onto this high RF carrier frequency. When these two frequencies were modulated together they produce many other frequencies known as sideband frequencies. These sideband frequencies were also in the 3 million Hertz range and one of these sideband frequencies would line up with one of the original researched frequencies. It is the combination of the low audio frequency and the high RF carrier frequency that was needed to produce the high RF frequencies.


Because many manufacturers do not understand what we have explained they are only using the low audio frequencies, incorrectly believing they are the researcher's original frequencies. This is why the majority of the machine manufacturers claim they are using the original frequencies when they actually are only using one half of the needed two frequency combination required to produce high RF frequencies.


The GB-4000 is a 20 million Hertz or cycles per second frequency generator which CAN output all of Dr. Rife’s original frequencies including those in the 17 million Hertz range. It can use a 3.1 million Hertz high RF carrier frequency with the low audio frequencies so that the correct sideband frequencies can be produced. It is the only frequency generator capable of outputting 8 audio frequencies simultaneously which makes it 8 times faster to use than any other frequency generator. As a stand-alone machine it has a power output of 4.7-watts and if you purchase the optional SR-4 15-watt amplifier it amplifies the 4.7-watts to 15-watts. Also available is an optional 190-watt ray tube amplifier. The M.O.P.A. amplifier has a variable RF carrier frequency range from 2.2 to 3.8 million Hertz. With sideband its frequency range goes from 1.7 to 4.3 million Hertz. It can output all of the frequencies in the 3 million Hertz range and is a replica of the original 1936-39 equipment. The original 1930's/1940's ray tube instrument used a minimum of 50 to 100 watts because anything less than this was considered  to be underpowered and not capable of doing the job.


Many frequency technology devices on the market have a frequency range of 100,000 Hertz or less. They do not use any RF carrier frequency. They cannot output any of Dr. Rife’s original frequencies, whereas the GB-4000 can. They are also not capable of using the sideband method used in the original 1930’s equipment so they cannot output any of the sideband frequencies in the 3 million Hertz range.

Usually it is only after people have purchased these other devices that they learn these important facts. At that time, it is usually too late to return the device in order to choose a different one with more capabilities.

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A corroborative group of researchers have contributed to the writing of a series of papers and reports about  scientific and comparative differences between the more popular frequency instruments available in the marketplace today.

Get honest answers to your questions. Compare and contrast features, specifications and factual information regarding popular frequency instruments. Reports are informative and easily readable for non-scientists and also contain well-researched analytical data, citations, graphs, references, and one even has web links to videoed laboratory tests comparing two instruments side-by-side. Read one of the FREE comparison reports today!

These information packed reports are not published online. However, if you're interested in these topics and desire to further educate yourself about the differences and specifications between the varied frequency generator systems, please contact our office. One of our own researchers will help you decide which report(s) may be beneficial to guide your investigation into finding a machine that will help you get the answers you are seeking. We'll further assist you in getting your questions answered with information you'll need to make an informed decision.


Our company owns nearly all of the top frequency equipment that one can find online with vendors. With some equipment we have multiples of the same devices to do our own independent research. In the recent past, we have hired independent graduate students at a top university, who hold doctorates (Eng.D) in Electrical Engineering, to give us their candid feedback and written reports after investigating these popular plasma tube devices. Questions were answered about how they operate, including data on specifications and how these function generators, plasma ray tubes, amplifiers and contact electrodes really work. Don't buy blind. Get the researched facts today!

To receive a comparative paper or report, please contact our office.

Comparison papers and reports will be emailed to you in .pdf format.

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“The truth, I was ultimately to learn, is the most dangerous thing …  Nothing is more difficult to report than the truth, and few, indeed, are those who want to read the tough, harsh words of reality.”

–Harrison Salisbury, The New York Times

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