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The Model 4P (September 1983, Radio Shack catalog number 26-1080) is a self-contained luggable unit. It has all the features of the desktop Model 4 except for the ability to add two outboard floppy disk drives and the interface for cassette tape storage (audio sent to the cassette port in Model III mode goes to the internal speaker).
RadioShack (formerly written as Radio Shack) is an American electronics retailer that was established in 1921 as an amateur radio mail-order business. Its original parent company, Radio Shack Corporation, was purchased by Tandy Corporation in 1962, shifting its focus from radio equipment to hobbyist electronic components sold in retail stores ...
20 MSPS with 12 built-in preselection filters and 3 antenna ports 0.5 1/1 USB 2.0 Yes Yes Yes none SDRplay: RSPduo [100] Pre-built 1 kHz – 2 GHz 10 MHz 14<2 MHz 12<8 MHz 10<9.216 MHz 8>9.216 MHz No Two independent tuners, each with 11 built-in preselection filters. 3 antenna ports 0.5 2/2 USB 2.0 Yes Yes Yes none
1984 – Radio Shack releases Version 6.2, the definitive version for the Model 4 [4] 1984 – Logical Systems publishes The Source, the commented assembler source code to TRSDOS 6.2 [1] Late 1986 – Logical Systems releases LS-DOS 6.3, the functionally equivalent update to TRSDOS 6.2. From this date, Tandy/Radio Shack ships it with the Model 4D.
A modified version of the MC-10 was sold in France as the Matra Alice. Programs loaded using a cassette which worked much better than those for the Sinclair. [citation needed] A magazine was published which offered programs for both the CoCo and MC-10 but very few programs were available for purchase. Programs for the MC-10 were not compatible ...
Having spent less than US$150,000 on development, Radio Shack announced the TRS-80 (Tandy Radio Shack) at a New York City press conference on August 3, 1977. [18] It cost US$399 (equivalent to $2,100 in 2024), or US$599 (equivalent to $3,100 in 2024) with a 12" monitor and a Radio Shack tape recorder; the most expensive product Radio Shack previously sold was a US$500 stereo.
The radio's theory of operation is based on the principle of the Wadley Loop tuner [1] (developed by Trevor Wadley in the 1960s), and was one of the first radios marketed by Tandy Corporation to have a digital frequency display. The DX-302 succeeded and improved upon the similar Realistic DX-300. The frequency range is from 10 kHz to 30 MHz. [2]
The computer was sold through Radio Shack stores in the United States and Canada and affiliated dealers in other countries. It became one of the company's most popular models, with over 6 million units sold worldwide. The Olivetti M-10 and the NEC PC-8201 and PC-8300 were also built on the same Kyocera platform, with some design and hardware ...