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The final version of the Model 4 is the Model 4D (Radio Shack catalog number 26-1070), first sold in 1985. It is a Gate Array desktop machine featuring dual TEC FB-503 disk drives [28] with a capacity of 360KB each (double density sectors, 40 track, double-sided). Rather than using a lever-style latch as had previous Model 4 drives, these ...
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.
A 1939 company catalog bore the names Radio Wire Television Co. Inc. and "Lafayette Radio Corporation". In 1948, the company issued a catalog under the name “Lafayette-Concord” and called itself the “world’s largest radio supply organization”. In 1952, a catalog was issued using only the Lafayette name. [1]
A special-purpose expansion card was the 64K Memory Expansion Board (catalog number 26-4105) which allowed the Model II (without the expensive Model 16 upgrade) to run a special version of the Visicalc spreadsheet called Enhanced Visicalc. This made available larger worksheets by using banked memory beyond the Z80's base 64 KB.
When radio was first adopted by the U.S. Navy, a small, wooden structure placed on deck to house the ship's radio equipment became known as the "radio shack". [2] Today, a radio shack can be anywhere that radio equipment is housed and operated, usually a room such as with amateur radio stations, but for some the entire "shack" may consist of a ...
[8] [9] Belo Corporation, parent company of the Dallas Morning News and owner of many TV stations, invested US$37.5 million in Digital Convergence, RadioShack $30 million, Young & Rubicam $28 million, and Coca-Cola $10 million. [10] Other investors included General Electric, and E. W. Scripps Company. [11] The total amount invested was $185 ...
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]
Team RadioShack; List of TRS-80 and Tandy-branded computers; TRS-80 Model 100 This page was last edited on 26 August 2024, at 21:48 (UTC). Text is available under the ...
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related to: digital antenna radio shack catalog number 15 1109 50 30