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References: [ +subject:/^(?:^\s*(re|sv|fwd|fw)[\[\]\d]*[:>-]+\s*)*\[TowerTalk\]\s+Vacuum\s+tube\s+100\s+years\s+old\s+today\s*$/: 19 ]

Total 19 documents matching your query.

1. [TowerTalk] Vacuum tube 100 years old today (score: 1)
Author: "Tom Rauch" <w8ji@contesting.com>
Date: Tue, 16 Nov 2004 11:28:11 -0500
On Nov. 16, 1904 Fleming patented the Fleming valve. The vacuum tube is 100 years old today (exactly 46 years to the day older than I am). I was an electrical engineering student in the late 60's. Th
/archives//html/Towertalk/2004-11/msg00416.html (8,767 bytes)

2. RE: [TowerTalk] Vacuum tube 100 years old today (score: 1)
Author: "Keith Dutson" <kjdutson@earthlink.net>
Date: Tue, 16 Nov 2004 10:40:59 -0600
Happy birthday, Tom! You look younger than your age (in CQ magazine). I am a tad more than a year behind you (21-Jan-42). It seems they were correct about the transistor not replacing the "valve" in
/archives//html/Towertalk/2004-11/msg00418.html (9,693 bytes)

3. RE: [TowerTalk] Vacuum tube 100 years old today (score: 1)
Author: "Keith Dutson" <kjdutson@earthlink.net>
Date: Tue, 16 Nov 2004 11:30:01 -0600
Oops. After checking my math, it appears I am OLDER than you by almost 10 years. Keith NM5G --Original Message-- From: towertalk-bounces@contesting.com [mailto:towertalk-bounces@contesting.com] On Be
/archives//html/Towertalk/2004-11/msg00419.html (11,170 bytes)

4. RE: [TowerTalk] Vacuum tube 100 years old today (score: 1)
Author: Steve Katz <stevek@jmr.com>
Date: Tue, 16 Nov 2004 09:29:49 -0800
_______________________________________________ See: http://www.mscomputer.com for "Self Supporting Towers", "Wireless Weather Stations", and lot's more. Call Toll Free, 1-800-333-9041 with any ques
/archives//html/Towertalk/2004-11/msg00420.html (8,622 bytes)

5. Re: [TowerTalk] Vacuum tube 100 years old today (score: 1)
Author: Bob Nielsen <nielsen@oz.net>
Date: Tue, 16 Nov 2004 10:10:03 -0800
I was taking a senior physics class in electronics at UCLA in 1962 and we spent some time studying vacuum tube circuits. The professor was asked if we were going to learn anything about transistors a
/archives//html/Towertalk/2004-11/msg00422.html (9,711 bytes)

6. Re: [TowerTalk] Vacuum tube 100 years old today (score: 1)
Author: "Jim Brown" <jim@audiosystemsgroup.com>
Date: Tue, 16 Nov 2004 12:53:37 -0600
I was luckier. My EE class (Univ of Cincinnati, 1964) was the last that was required purchase the complete 5-volume set of RCA tube manuals. We used them extensively (to study load lines), but we als
/archives//html/Towertalk/2004-11/msg00423.html (8,878 bytes)

7. Re: [TowerTalk] Vacuum tube 100 years old today (score: 1)
Author: "Chuck Lewis" <clewis@knology.net>
Date: Tue, 16 Nov 2004 13:33:35 -0600
"It doesn't appear that there will be much use made of Transistors in amateur work, unless it is portable and/or compact audio amplifiers. The noise figure is said to be poor, compared to that obtain
/archives//html/Towertalk/2004-11/msg00425.html (11,823 bytes)

8. Re: [TowerTalk] Vacuum tube 100 years old today (score: 1)
Author: "Jim Miller" <JimMiller@STL-Online.Net>
Date: Tue, 16 Nov 2004 15:16:38 -0600
I was in missile class in the Air Force in 1963 and the lab and course was entirely in tubes even though the missile was entirely in transistors. The adaptation was very short (minutes, maybe and hou
/archives//html/Towertalk/2004-11/msg00427.html (12,014 bytes)

9. Re: [TowerTalk] Vacuum tube 100 years old today (score: 1)
Author: "Gene Smar" <ersmar@comcast.net>
Date: Tue, 16 Nov 2004 16:32:11 -0500
TT: There was an interesting (to me) article in the August 1998 issue of IEEE Spectrum magazine about the continued use of vacuum tubes in high-end audio equipment and musical instrument amplifiers.
/archives//html/Towertalk/2004-11/msg00429.html (14,001 bytes)

10. Re: [TowerTalk] Vacuum tube 100 years old today (score: 1)
Author: "Jim Brown" <jim@audiosystemsgroup.com>
Date: Tue, 16 Nov 2004 15:48:23 -0600
Modest amounts of second harmonic distortion are perceived as "warmth." There are even EFX generators that contain a second harmonic generator, and the control for it is called "warmth." When left to
/archives//html/Towertalk/2004-11/msg00430.html (9,656 bytes)

11. Re: [TowerTalk] Vacuum tube 100 years old today (score: 1)
Author: "Don K5AQ" <donhall@myriad.net>
Date: Tue, 16 Nov 2004 15:55:28 -0600
My first job out of college was with Bell Labs in Whippany, NJ designing a solid state (transistorized!) guidance system for the NIKE guided missile. The first circuit I worked on was a one-shot usin
/archives//html/Towertalk/2004-11/msg00432.html (9,161 bytes)

12. Re: [TowerTalk] Vacuum tube 100 years old today (score: 1)
Author: "Jim Brown" <jim@audiosystemsgroup.com>
Date: Tue, 16 Nov 2004 16:26:14 -0600
With a good Scotch or a rich Belgian ale. And for Miles (or Getz), with a consenting adult. :) But seriously -- the distortion is often added at the recording/production stage for artistic effect. On
/archives//html/Towertalk/2004-11/msg00435.html (9,596 bytes)

13. Re: [TowerTalk] Vacuum tube 100 years old today (score: 1)
Author: "Don Bozarth" <drboz@pacbell.net>
Date: Tue, 16 Nov 2004 14:36:40 -0800
The soft glow of vacuum tubes always had a sort of charm that is lost with solid state equipment... I remember buying my first transistor in '58 or '59... Ratheon CK-722. Built a little audio amp and
/archives//html/Towertalk/2004-11/msg00436.html (9,041 bytes)

14. Re: [TowerTalk] Vacuum tube 100 years old today (score: 1)
Author: "Chuck O'Neal" <cdoneal@comcast.net>
Date: Tue, 16 Nov 2004 18:39:29 -0500
Love this thread! I lurk here, but have to add this. I took the last vacuum tube course offered at my college, (Tufts) in 1969. Yup, I'm an old buzzard. Still know how to design using load lines and
/archives//html/Towertalk/2004-11/msg00438.html (9,660 bytes)

15. Re: [TowerTalk] Vacuum tube 100 years old today (score: 1)
Author: "Jim Lux" <jimlux@earthlink.net>
Date: Tue, 16 Nov 2004 18:34:15 -0800
of Kind of also depends on your budget and other requirements (such as reliability, infrastructure costs, etc.). Solid state amplifiers have pretty much replaced high power tubes in a lot of L-band r
/archives//html/Towertalk/2004-11/msg00445.html (10,626 bytes)

16. RE: [TowerTalk] Vacuum tube 100 years old today (score: 1)
Author: "Al N6TA" <n6ta@arrl.net>
Date: Tue, 16 Nov 2004 20:41:33 -0800
I work for a guy who makes serious efforts trying to get the 'truest' audio. He talks of the 'infetesimal perceptible' that needs to be considered when evaluating the quality of an audio recording an
/archives//html/Towertalk/2004-11/msg00454.html (15,580 bytes)

17. Re: [TowerTalk] Vacuum tube 100 years old today (score: 1)
Author: "Bill VanAlstyne, W5WVO" <w5wvo@cybermesa.net>
Date: Wed, 17 Nov 2004 06:39:34 -0700
This is all off-topic, of course, but so fascinating... Hopefully we'll all be forgiven. :-) I once had the opportunity, at an audiophile friend's home, to do a blindfolded side-by-side comparison of
/archives//html/Towertalk/2004-11/msg00456.html (19,079 bytes)

18. Re: [TowerTalk] Vacuum tube 100 years old today (score: 1)
Author: Gary Schafer <garyschafer@comcast.net>
Date: Wed, 17 Nov 2004 13:32:14 -0500
The 3 dimensional effect has little to do whether you use a tube or solid state amp. It has more to do with how the speakers are placed in the room and the quality of them. A system that can maintain
/archives//html/Towertalk/2004-11/msg00467.html (20,901 bytes)

19. Re: [TowerTalk] Vacuum tube 100 years old today (score: 1)
Author: "Ward Silver" <hwardsil@centurytel.net>
Date: Thu, 18 Nov 2004 11:58:52 -0800
I'll bet it only had one nut in the shell... Hmmm...would that make it "a salt weapon?" 73, Ward N0AX circuitry. _______________________________________________ See: http://www.mscomputer.com for "Se
/archives//html/Towertalk/2004-11/msg00525.html (9,279 bytes)


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