Tom, Stripline type RF sensors are narrow-banded and generally won't work with that type of band spread. The toroidal transformer should work if the core is rated for the complete frequency range lik
Joe, Well, the steel prices did come down because of the steel dumping from Asia. However, the steel manufacturers have been raising the sur-charges on every 1000 pound shipment. This controls the la
Rob, You are correct on this. Most use a 1N270 or so, but I'm not sure what would be needed for that wide of a range. Will Matney robrk@echomatrix.net wrote: Don't think any diodes in the circuit are
One other thing I forgot to mention about that toroid. Check to see if that may be going into resonance at 80 meters or so with a dip meter. You mentioned that there was hardly any output on 80 but w
Ian, I'll go ahead and answer this here so folks can get a grasp of what were discussing. What all should know is were working together to try and come up with a one size fits all transformer for sev
Carl, I'm not for sure what was used in that amp. However, most good amps are built using the computer grade screw top caps. Most use at least 220 uF @ 450 Vdc. At least six in series for a rating of
Chris, Charles Byers who makes the chassis kits may be able to help you on this. Explain to him what you need, and direct him to that website with the drawings for the parts. His e-mail is below. He'
Please catch the post I just sent to Chris about Charles Byers. It went to the wrong person. Thanks in advance. Will Matney _______________________________________________ Amps mailing list Amps@cont
Bill, Charles Byers who makes the chassis kits may be able to help you on this. Explain to him what you need, and direct him to that website with the drawings for the parts. His e-mail is below. He's
Vic, Peter, and others, I think what Vic is talking about is using a "grid leak" bias circuit. The tube actually has bias this way by charging the capacitor up which is parallel with a resistor. This
Ok, what I'm writing here, don't take offense to if your the auctioner. On ebay, I noticed a large RF generator that had a 3CX10,000 in it. The bids had gotten up to about $2500. Here's the problems,
The ebay Item number: 5724275642 http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&category=48700&item=5724275642&rd=1&ssPageName=WDVW Will Matney Bill Fuqua wrote: It is done so that those buying such t
Steve, There's several things that has to be known; The impedances of the primary and secondary (what is being matched to what?). The voltage in the windings and the current to determine the power. T
Well, If they are the exact transformer, same number of turns in both primary and secondary, and the same amount of iron, they can be ran parallel-parallel or series-parallel. If one is off just a sm
A friend on mine built up an inverter using 2N3055's at 60 Hz. This way, standard 12-0-12 (24 V, C.T.) transformers can be used. I figured I'd post a link to the schematic for those who are intereste
Ken, If six meters is all your wanting, no higher, I'd take a look at the way the old Pride amplifier was made. The schematic for it is all over the net. The input and output tank will need to be cha
Roger, I think Tom at Toms Tubes has these made up. You might try his website. Below is a quote from Tom as he's updating the site. I tried it and got a dang take-over search engine. I hope he didn't
Paul, You can run the chimney from the chassis to the vent hole in the top cover. It doesn't have to be under the fins like most short chimneys. You can make one that reaches all the way to the top o
Bill, That amp, which really said was an amateur amp, was mostly sold to the 11 meter folks. The larger the numbers, the more they sold it for. I've seen it's schematic listed now on several amateur
Bill, Wide open by cutting the bias as far down as it would go. Maybe -20 to -30 Vdc at the most. On top of driving the dickens out of the tube, maybe 20 watts pep going in, some running more. Plus t