From 1950, Rife had a close associate by the name of John Crane. Crane built instruments for Rife and was partnered with him until his death. After which, Crane attempted in earnest to build modern Rife instruments, and to debunk some of the wild speculation about the circumstances of Rife's demise. Crane produced the first full function, transistorized frequency instruments, and the first to be digitally controlled. But Crane did not perform adequate tests. He assumed that transistors would be better, and that digital would be more accurate. He was wrong. Crane's attempts were failures, producing only about 20 percent of the effects expected. Many charlatans copied Crane, and for this reason, accused Crane of lying about the frequencies used in the therapy.
    By the time Wright Laboratories was inducted into this story, the Rife technique was at an all time low. John Crane had been arrested for mail fraud. The few makers who stubbornly remained, Bob Beck, Don Tunney, and a handful of others, were making feeble machines, barely able to function at all, and persecution of users by federal authorities in plain violation of the US Constitution, was rampant.
     Since paranoia was common among promoters, and transactions were typically conducted in secret by operatives in parking lots from the trunk of a car, John Wright did not have access to the people who used the machines he made. There was reason to fear. Fear that users would not be successful without any customer support of any kind. Wright Labs began to produce a book called THE FREQUENCY INSTRUMENT, which was a compilation of applications used by Rife and Crane for many years. Wright Labs also increased the power and accuracy of their instruments to such a degree that it would be very difficult for users to be unsuccessful if they used them with any regularity.