OK, answered my own question by reading some spec sheets. I can run the 6F6 with 250V on the screen. The limit on my 813 is 600V on the screen and about 300ma cathode current. So, it will work but it
What is max screen voltage for a 4cx250?? Eimac doesn't have a value for screen voltage under max ratings. As a refresher, I'm wondering if there are an el-cheapo tetrodes that will work similar to 6
Het, I started this and we're not talking about CB amp. We're talking about Tetrode amp with tube side of output tranny between screen and plate anf HV applied to screen :-) Or is this a common CB ci
This is very confusing. Did I miss some mail. How did "Pride" amps get into the pix??? Here is the circuit. K bias for DC, ground for audio (fat cap) G1 driven G2 HV and one side of output transforme
PhilSince you are collecting catalogs, you might want to look at Nidec, a Japanese company) maker of some very nice blowers. http://www.nidec.com/dcfansquickguide4.html is list of their blowers. Bigg
Am contemplating a move to kH6. If the deal goes down will be selling off my collection of approx 40-60 boatanchor radios. House will be smaller. I like HF but yard will be small too so am thinking a
WTS this pile 'O' Hallicrafters, which includes HT-33. everything at http://www.edebris.com/Hallicrafters/ Because of shipping issues, it is offered as a lot only I have original manuals and a pair o
Forgive me if this has been overly mentioned on amps. Interesting comments on vacuum tube life may be found here. http://www.littonedd.com/tubearticle/tube.html -bob wb4mnf -- FAQ on WWW: http://www.
Anyone got a good pair of 4-250 for few $. Need for old EFJ Thunderbolt. -bob -- FAQ on WWW: http://www.contesting.com/ampsfaq.html Submissions: amps@contesting.com Administrative requests: amps-REQU
I'm starting to see some surplus 12.5cm receiveing stuff and wonder if anyone here is playing with modulation schemes and frequency control of microwave oven magnetrons. AM shouldn't be too difficult
600W for $12 on 12.5CM??? Anyone messing with modulation/freq control schemes for microwave oven tubes? -bob -- FAQ on WWW: http://www.contesting.com/ampsfaq.html Submissions: amps@contesting.com Adm
Linda (spouse) has recently returned from a job interview at UofH. It went well and I am pretty confident we'll be relocating (They'd have to be crazy to not hire her!) I'll appreciate hearing from a
I recall some past discussion of this on the list and submit the following URL http://www.intio.or.jp/jf10zl/24vr.htm Check out some of the other projects on this site. -bob -- FAQ on WWW: http://www
Some guys prefer to spend a grand a night enticing their favorite stripper home. Don't they know they can get a Russian bride with good teeth and a PhD for airfare? -- FAQ on WWW: http://www.contesti
I've been following this thread hoping to learn something and am having a hard time following. Probably because I'm not an engineer. In any case, if anyone has worked through the maths, I'd really ap
Inexperienced amp builder has some questions. What are design goals of this DAF amp? I tried web site but my DNS says no such name. Does this DAF amp employ any feedback? How much? What class does it
What are these mysterious circulating currents? I'm having trouble finding a satisfactory explanation. Also curious as to how to calculate (physics, not rule of thumb) -bob -- FAQ on WWW: http://www.
Thanks guys, I get it now. I'm not messing with a pi-net. The project is a Hartley osc built from a pair of 100TH. To make something like this work with any kind of efficiency and still give a 'clean