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Paralleling 3 tubes triples C-feedback, and that is not desirable unless one is trying to build an oscillator. The tube that is best suited for 20k - 35k out is the 8281/4cx15000A. 200w will drive one

Fast fuses pop like popcorn in C-filter power supplies.

Mike == I accidentally connected a BNC to 6kW of SSB on 1.8MHz. Nothing happened. The innards of a BNC will mate with a type N. > R L Measures, AG6K, 805.386.3734 r@..., , rlm@...,

060920@...> wrote: ends... the to grid C. Any external effects caused by lowering the anode by an inch will probably not impact anyone using it below 25 MHz. The only part of the anode cooler getting

, and replace the RF chokes with fusing resistors. helps prevent grid- filament shorts. is excellent. thoriated tungsten filament tubes? ### Lemme see. 8kv /50 ohm = 160 A Ur typ 240v pri breaker is

I remember telling about this at the amps reflector some time ago, but since it happened again this week, I wished to illustrate with examples (I repair tcvers., amps, etc. so from time to time an

Ok all you amplifier genei out there; how much power will a BNC connector handle at frequencies below 30 mHz? 73, Mike, W5UC http://members.cox.net/w5uc/

All, I finished the 50 Hz qhick Calc portion of the Maxwell transformer calc, and posted a photo showing the results for any interested. Both the 60 Hz and 50 Hz results are for 3000 watts. I selected

Bill, That is exactly the truth. When I started in repair (radio and TV), tube sets were still around. There, you replaced parts in a chassis with point to point wiring. Next came addition of PC

We seem to be casting a lot of blame on individuals, but I believe the underlying problem isn't people, it is the nature of electronic equipment these days. A lot of us got our start by being

Jim, What I believe is that publishers assume everyone who reads their book already know ohms law. I remember in V0-Tech we had to remember Ohms law, XC and XL. That has stuck with me until this day.

to Agreed. I've seen this happen on the other list several times when the mere mention of a CBr came up. A good 5-10 would chime in with snide comments and saying how dumb or stupid they

In my experiences, those who use ad hominems either have something to hide or they are trying to hide from reality. I call it being smart enough to ask. At age 15, I built my first amplifier and I

Pentalab wrote: Actually that's not so. The grid ring OD is 5.030" to 5.090" per the data sheet and verified measuring here. The

060920@...> wrote: up and down stove pipe chimney..it was 1/4" thick teflon, and so heavy, it's weight alone held it to the chassis. As noted b4... it restricted the intake air too much. > TONY

amazed class Some of these are the very same ones who claim to be smarter than CBr's, and somehow above them! I've heard a lot of name calling by some Hams towards CBr's, and the very same ones turn

amazed at some of the elemental questions asked by persons with extra class call signs. > Rich Sez... I have found that few Extras know Ohm's Law. should be plastered on page 1 of all these books. ###

I have found that few Extras know Ohm's Law. ... R L Measures, AG6K, 805.386.3734 r@..., , rlm@..., www.somis.org

Cq ww ssb contest this weekend. You will be hearing some BIG tubes this weekend... all bands. Good... cuz I helped design several of em. Hope they have fun.... more power to em ....[no pun intended,