I'm trying to find out more about this but so far have only found instruction on avoiding ripple frequency resonance with a choke input filter. What were the old handbooks you looked at? I was lookin
Okay thanks--I didn't look far enough back in time. I'll go into the '30s handbooks. tnx Rob K5UJ _______________________________________________ Amps mailing list Amps@contesting.com http://lists.co
. You have to use bleeder resistors so there is always a load on the supply, or swinging choke on the input. I suspect modern day amp manufacturers avoid using a two stage LC filter because the iron
A big reason why the industry isn't interested in tube anything is MTBF. Especially now with one guy carrying three pagers or phones that get auto-dialed by the status gear to keep a cluster site on
This is just your opinion -- no facts presented. Here's an opinion for you: 162 uF at 5 KV is asinine. I don't have time to do the equation but I am pretty sure the stored energy is somewhere between
I think you need more than 2 KV. maybe around 9 KV but I stink at remembering the tech. details because I can't remember what I had for lunch yesterday. But why don't you just use 6A10s and be done w
I apologize--that just shows you how much I know and remember (not much) 73 Rob K5UJ _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/
sure there's a reason. It's called cheap marginal components. Rob K5UJ (OK, there must be a reason, but I haven't heard one). _______________________________________________ Amps mailing list Amps@co
What you are saying is tube amps would fail if they were not "over engineered" but assuming you are correct and they are, then they are in fact more robust so reality trumps theory. 3-500z with 20 w
Using the bc industry as an analogy for hams is flawed. broadcasters have a revenue stream from which they can pay $$$ for top of the line s.s. gear. it is cost effective for them for several reasons
You are fixated on 10, 40, 50 KW broadcast gear as some sort of barometer or defining standard for ham radio. I love AM medium wave broadcasting and the people in it to death but there is little over
Every one of those automatic tuners I have ever seen look like they'd melt down with a 300 or 400 w. carrier. Bob, I decided you are completely correct about solid state. If you happen to have any ex
that's not new. Tube ham amps have been built tiny now since Dentron started doing it. The only reason is the average consumer electronics ham wants a small quiet amp because he does not understand
That's great Brown. Fob your garbage junk off to unsuspecting and probably inexperienced hams. Stuff you wouldn't use yourself. What a guy. 37 Rob K5UJ _______________________________________________
I didn't know it was an insulator. I thought the layer between the transistor and the sink was some kind of thermal conducting grease. My _guess_ is that a fluid compound is inserted between the tra
I wouldn't touch a T network. High pass = no pass here 73 Rob K5UJ _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listinfo/a
Good luck fixing it when it breaks. Or maybe you handle 100 pin chips a lot better than I do. I'm all for tx over amps, but I prefer vintage. Rob K5UJ _______________________________________________
Not true. Build for your particular impedance matching needs. the TT product and most made for hams are designed to attempt to match everything because that's what most hams what, the mythical do eve
Because not everyone operates an appliance box from Alpha, Ameritron etc. or some plastic JA box. Some hams operate rigs with swing link networks like the BC610 (okay the link on that one rotates) wh
832 uF at 7.7 KV. No offense, but that's a waste of capacitors. I won't get into the stored energy. 73 Rob K5UJ _______________________________________________ Amps mailing list Amps@contesting.com h