Darrell, WE forget how far computers have evolved. In the 1970's I worked at Goldstone for NASA and the station computers were Dec-910s (TTL and core memory) and big reel-to-reel recorders. I calculated the Doppler for Mariner Venus-Mercury (MVM-73) encounter at Venus using a HP desk calculator as we attempted to find the signal after the spacecraft exited from behind Venus (I was the station receiver project engineer in then-new PLL s-band Rx). Computers were so untrustworthy they had five duplicates on Apollo and took a majority vote on calculations. I was involved with Voyager/Pioneer/Viking missions. I left JPL in 1979 (fun to think back).
In 1982 I worked as a programmer using one of the early IBM-PC with 128K mem and dual cassettes (no HD). 73, Ed - KL7UW ------------------------------------ Message: 5 Date: Mon, 12 Sep 2011 13:12:11 -0400 From: AB2E Darrell <[email protected]> Subject: Re: [Elecraft] OT: Heathkit Catalogs To: <[email protected]>, <[email protected]> Message-ID: <[email protected]> Content-Type: text/plain; charset="Windows-1252" Interesting info Dave. The computer on the 1970s Voyager space probe had a whopping 68K of memory total! And that was multitasking. Source: http://voyager.jpl.nasa.gov/faq.html 73 Darrell AB2E 73, Ed - KL7UW, WD2XSH/45 ====================================== BP40IQ 500 KHz - 10-GHz www.kl7uw.com EME: 50-1.1kw?, 144-1.4kw, 432-100w, 1296-60w, 3400-? DUBUS Magazine USA Rep [email protected] ====================================== ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
