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#21
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Choice of iron powder toriod?
Joerg wrote:
Hello Michael, There is no reason to apologize for being good with analog. ;-) I worked as a broadcast engineer during the time they announced the first memory chip, (1101) which was a slow, noisy 256 bit * 1 DRAM with very critical timing. I also did analog and digital work on the microwave equipment built at Microdyne, before L3-Com closed the Ocala plant. Seems you started with digital stuff a year or two earlier than I did. My first RAM had a whopping 1024 bits. Not bytes, bits. 21...something, I could look it up since the device where its in still works. 2114? 1K * 4 bits? The reason I asked about the microwave equipment, I would like to meet the people who designed the C-band CATV receivers I had to maintain in the '80s. I always loved Collins equipment, till I ran into those radios. They had a horrible failure rate, ... But their HF radios were quite reliable. Unfortunately at that time out of my budget range, and so were those nice mechanical filters :-( Regards, Joerg http://www.analogconsultants.com I still have an unused 2.1 KHz Collins 455 KHz mechanical filter I bought at the Dayton hamfest years ago. Its a little narrow for voice, but it would be good for CW. I still like Collins equipment, just not their poorly designed CATV equipment. I wish I could afford a R-390 and felt well enough to do a complete restoration. -- ? Michael A. Terrell Central Florida |
#22
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Choice of iron powder toriod?
"Joerg" wrote in message
... Then again a SW engineer once told me that nothing is truly analog. There is always that smallest digital step, the quantum. So, digital is base two, and analog is base 1.6 x 10^19? ;-) Tim -- Deep Fryer: a very philosophical monk. Website: http://webpages.charter.net/dawill/tmoranwms |
#23
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Choice of iron powder toriod?
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#24
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Choice of iron powder toriod?
Michael A. Terrell wrote: Joerg wrote: Hello Michael, There is no reason to apologize for being good with analog. ;-) I worked as a broadcast engineer during the time they announced the first memory chip, (1101) which was a slow, noisy 256 bit * 1 DRAM with very critical timing. I also did analog and digital work on the microwave equipment built at Microdyne, before L3-Com closed the Ocala plant. Seems you started with digital stuff a year or two earlier than I did. My first RAM had a whopping 1024 bits. Not bytes, bits. 21...something, I could look it up since the device where its in still works. 2114? 1K * 4 bits? Nah - 2102 1k * 1. Had 8 of 'em in in my homebuilt Nascom 1 computer which with a 2708 UVEPROM for the 'monitor' was all the RAM for system and user code and video store! Nevertheless, it was sufficient for a machine code program to run 'Lunar Lander', hee hee. Collins filters were regarded as the bees knees in UK ham circles but I never could afford one! 73 de G3VPC -- Graham W http://www.gcw.org.uk/ PGM-FI page updated, Graphics Tutorial WIMBORNE http://www.wessex-astro-society.freeserve.co.uk/ Wessex Dorset UK Astro Society's Web pages, Info, Meeting Dates, Sites & Maps Change 'news' to 'sewn' in my Reply address to avoid my spam filter. |
#25
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Choice of iron powder toriod?
Hello Tim,
Then again a SW engineer once told me that nothing is truly analog. There is always that smallest digital step, the quantum. So, digital is base two, and analog is base 1.6 x 10^19? ;-) Still, the digital guys kept telling us "Some day we'll get there and then you are going to be extinct". I am not worried at all... Regards, Joerg http://www.analogconsultants.com |
#26
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Choice of iron powder toriod?
Joerg wrote: Still, the digital guys kept telling us "Some day we'll get there ........ How long have they been saying that ???? ;-) Graham |
#27
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Choice of iron powder toriod?
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#28
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Choice of iron powder toriod?
Graham W wrote:
Michael A. Terrell wrote: Joerg wrote: Hello Michael, There is no reason to apologize for being good with analog. ;-) I worked as a broadcast engineer during the time they announced the first memory chip, (1101) which was a slow, noisy 256 bit * 1 DRAM with very critical timing. I also did analog and digital work on the microwave equipment built at Microdyne, before L3-Com closed the Ocala plant. Seems you started with digital stuff a year or two earlier than I did. My first RAM had a whopping 1024 bits. Not bytes, bits. 21...something, I could look it up since the device where its in still works. 2114? 1K * 4 bits? Nah - 2102 1k * 1. That was one early memory chip i don't recall using. Had 8 of 'em in in my homebuilt Nascom 1 computer which with a 2708 UVEPROM for the 'monitor' was all the RAM for system and user code and video store! Nevertheless, it was sufficient for a machine code program to run 'Lunar Lander', hee hee. Collins filters were regarded as the bees knees in UK ham circles but I never could afford one! The price was right, that day at the Dayton hamfest. ;-) 73 de G3VPC -- ? Michael A. Terrell Central Florida |
#29
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Choice of iron powder toriod?
"Joerg" wrote in message ... Hello Bill, ... Then again a SW engineer once told me that nothing is truly analog. There is always that smallest digital step, the quantum. Regards, Joerg Poor fella's got it bass ackward. 73, Steve, K,9;D.C'I |
#30
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Choice of iron powder toriod?
"Keith Williams" wrote in message t... In article , says... "Joerg" wrote in message ... Then again a SW engineer once told me that nothing is truly analog. There is always that smallest digital step, the quantum. So, digital is base two, and analog is base 1.6 x 10^19? ;-) Not really. Analog's bits are just smaller. ;-) -- Keith That's what he said... 10^18 smaller 73, Steve, K,9.D;C'I |
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