Until Radio Reference came along, Bob Grove was the "go to" source for technical advance relating to monitoring, scanners and antennas. He would always answer his phone during business hours.
Oh, those days were good, and I miss them dearly; diving into the articles and reviews in the latest issues of Monitoring Times and Pop Comm, and drooling over the ads for radios I could never afford. Priceless!
The Electronics Communications Privacy Act (ECPA) was passed in 1986 and made it illegal to listen to any part of a telephone conversation that was carried over radio waves (i.e. cordless and cellular telephones). But, it was still fairly easy to do so with most scanners, often after a simple hardware modification. Congress followed up with the Telephone Disclosure and Dispute Resolution (TDDRA) in 1992. Bob Grove wanted to testify before the U.S. House of Representatives committee that was handling the TDDRA to explain that the TDDRA didn't go far enough to protect cellphone users. Grove did prepare a statement which can be found online with some digging. The purpose of Grove's statement was to show how easy it was to monitor cellular phone calls and to put the responsibility on the cellular phone companies to make it harder to monitor their systems rather than restrict the ability of scanner listeners to listen to signals. In the end, the TDDRA was was revised in 1994 to ban the manufacture, importation, or sale of scanners or receivers that could be readily altered to receive cellular telephone frequencies. This is one of the reasons why just about any frequency agile VHF-UHF receiver made today has to be FCC Part 15 certified, even amateur radio equipment.I remember when Congress had an issue with him selling cellular capable scanners and had him come to the Congressional bldg and tried to show him how easy it was to monitor cell phone signals.
Grove basically got duped into making scanner listeners look bad.
I also remember seeing Bob Grove in a national TV news story about scanners. It may have been around the time the TDDRA was being hashed out. There was video in the story of Grove sitting in his car near a fast-food restaurant listening to the drive-up order system. I'm sure that Mr. Grove wanted to expose just how easy it is to monitor various signals, but the news story made him look like a snoop and a voyeur, which, of course, was the narrative coming from the cellular telephone industry regarding scanners. Grove basically got duped into making scanner listeners look bad.
I know that Bill Cheek provided instructions for connecting data slicers to various scanners. I don't know if he actually built and sold de-scramblers. At least, not officially.Who was it that got in hot water over building and selling voice inversion de-scramblers, Bob Grove or Bill Cheek?
I think you are correct about it being a data slicer circuit. That's the most common Google search results anyway.I know that Bill Cheek provided instructions for connecting data slicers to various scanners. I don't know if he actually built and sold de-scramblers. At least, not officially.