The Trisquare TSX300 was a proprietary walkie talkie which was discontinued in 2012, however many radios are still available on the used or surplus market. Although it uses the same spectrum and technology as Nextel and Motorola, it is incompatible with either.
Although the handheld was clearly ahead of its time, it wasn’t well-constructed, evidently as a cost-cutting measure to remain competitive, and the radios frequently failed. Without manufacturing support, repair would be difficult or expensive.
These radios operate in the 902-928 MHz unlicensed ISM band. The International Telecommunications Union has designated this as a license-free band in Region 2, which includes the Americas, Caribbean, and certain Eastern Pacific islands. As such, this is the only wireless category that is legal to use anywhere in the United States, on the cruise ship in international waters, or in foreign ports in the Caribbean.
The Trisquare TSX300 utilizes frequency-hopping, spread-spectrum technology with a maximum output power of one watt. The range is about one mile (less in urban areas and greater in rural areas).
The Trisquare TSX300 utilizes frequency-hopping, spread-spectrum technology with a maximum output power of one watt. The range is about one mile (less in urban areas and greater in rural areas).
Each of the channels has 15 talkgroups per channel, which operate similar to PL codes on other services. Therefore, a business operating on Channel 3 could have separate talkgroups established for different departments (supervisors, maintenance, housekeeping, operations, customer service, and so on).
In addition to voice communication, these radios allow support text messaging through a selection of user-defined messages. The only other handheld radio with text messaging capability is the Motorola T800, which operates on the unlicensed FRS band.