Hi Everyone. SPAM and very off-topic messages have been a major problem for all groups over the last 6 months, and the problem has only been getting worse. In...
Hi!! to everyone Can somebody from the group to tell me ,please, what is the purpose of a buffer tube on a transmitter,and where in the web can i find tube...
... Hi Geo. The "bible" of tube theory is the RCA Radiotron Designers Handbook, 4th Edition. A less comprehensive version is the 3rd edition. Sometimes they ...
... A buffer stage is placed between the oscillator and the PA stage, to prevent changes in PA tuning from excessively loading the oscillator, and causing the...
Hi everyone!!! can somebody please tell me which is the main factor who determines the class of a tube amplifier (A,B,C,AB1,AB2), and what are the main...
Well I'm not an expert by any means but it is mainly how the grid is biased and the output shape of the waveform. I.E. whether or not it is clipped or not....
Hi! I'm trying to find some Nixie and VFD- tubes.... If anyboday has some for sale please contact me.... used or new doesen't matter... obsoletes......
I just sold a bunch of nixies on eBay. I have one left; it is a BurroughsB-5092 13-pin tube. It's yours for free if you want it. I could box it up, send it to...
I've still got this brand new in metal spring loaded shipping box R.E.L. (Research Enterprises Ltd., Leaside, Ontario) REL-5, VT-98 VHF triode used in the...
Area-31 Research Faci...
rwstephens@...
Aug 24, 2003 6:13 pm
567
Dear members, Does anyone know what type of resistor to use in this situation? My amplifier was designed for 110 volts. When I use it with the 120 volts we...
You could always buy a "Variac". It's a continuously variable transformer with a range of 0 - 140vac. For your purpose I'd get one rated at least 4-5amps...
FWIW, I strongly endorse that approach. Since your problem is high line voltage, it's better to deal with it at the source, external to the amp, rather than...
Marc: Forget about brand name and look for a precision 1% metal film resistor usually (as Harvey indicates) 1 to 3 watts. Larger will not hurt but avoid...
Jeff Lange
jlhome@...
Sep 10, 2003 1:11 pm
572
Thank you all! That is the information I was looking for. You have all been a great help to me. Kind regards, Marc L. ... __________________________________ ...
Well, how to get rid of it is one thing, but also how to measure it in the first place to have a quantitative means of comparing one situation with another. My...
... "Hum" is 60 Hz line voltage frequency entering the signal pathway from various possible sources(here are four) : 1) Lack of grounding of phonograph, tuner,...
... Through a process of elimination I can pinpoint the noise source to the phonograph. If I disconnect the turntable and short the amplifier input it becomes...
Hi all. I have a couple hundred vacuum tubes that all worked when they were collected many years ago. I know I have to retest them and some are really weird...
Hi, on your tubes, consider that tube-type TVs haven't been manufactured in so long, there isn't a lot of demand for HV rectifiers (1B3, 3A3, etc) or HV...
You know on a lighter note. I am 50 years old and I have a 38 year old brother ( one of three all younger than me ) that until a year ago did not know what a...
I have looked on Ebay to get some idea what my tubes are worth. This has been little help however because I can't find matches. Many of my really odd shaped...
Hi to everybody!!! i have two separate units from an old receiver(the main receiver and the power supply) The characteristic words of the trademark are V.R.L...
Dear Groups, I've tried an experiment with my SoundBlaster SB live 5.1 soundcard. I used Sony Soundforge v7.0.0.262 and set it to record at 24b/96khz and to my...
George, I found a reference to a military-grade unit made in Canada by VRL inc. Is your unit called a "Reception Set Canadian VRL" on a metal equipment tag on...
Hello, This email message is a notification to let you know that a file has been uploaded to the Files area of the vacuumtubes group. File : /6SL7.zip ...
vacuumtubes@yahoogrou...
Jan 4, 2006 3:21 pm
585
Please check my Linked-In profile and join my vacuum tubes group http://www.linkedin.com/in/ircaudio...
