73 Magazine

73 Magazine was an amateur radio magazine, published from 1960 to 2003.

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Title Description Computers
Another Antenna Approach Program to determine antenna dimensions. Timex/Sinclair 1000
Ntty Grtty RTTY DIY RTTY interface for the Timex/Sinclair 1000. Timex/Sinclair 1000
RTTY Loop Computer uses in the ham shack. Section on ZX-81/TS-1000 add-ons. Timex/Sinclair 1000
RTTY Loop Bernard Ginsberg is working on interfacing his Sinclair ZX-81 (aka Timex 1000) to RTTY. Sinclair ZX81, Timex/Sinclair 1000
RTTY Loop Last month I wrote a bit about a new toy here at WAJAJR, a TRS-80C Color Computer. Based on the most powerful eight-bit microprocessor around, the Motorola 6809, this is a fascinating computer which gives huge potential at a bargain price. Well, I have had a chance to take a quick look at one piece Sinclair ZX81, Timex/Sinclair 1000
RTTY Loop ZX-81/TS-1000 Add-Ons Timex-Sinclair computer users get a boost from Bob Howard WADLI of West Covina, California. He tells us that he was anxious to mention that in the September issue of 73’s RTTY Loop, the answer to VEGY’s question about the TS-1000 was right there, under the ZX-81 banner. “You see, Timex manufactured the ZX-81 Sinclair ZX81, Timex/Sinclair 1000
Where Am I Pointed? Antenna aiming program. Timex/Sinclair 1000

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