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Title: Triode connecting 4-400's...? Post by: WB1AEX on January 22, 2005, 11:25:16 AM I am curious about the best way to go about this when subbing out a pair of 3-500's in an RF linear. I have searched around and found that some say to simply tie the grid and screen together and be done with it. Others tie the grid and screen together through a small resistance of 10 ohms or so, claiming it is easier to drive and is more linear. Not sure about that one. A few have suggested connecting the screen to the plate. That sounds like a recipe for a flashover from screen to grid but I guess some have had success with it. Anyone tried any of the above with success?
Thanks for sharing any experiences or for any suggestions, Rob WB1AEX Title: Triode connecting 4-400's...? Post by: WA1GFZ on January 22, 2005, 08:50:33 PM Rob,
Just plug them in. The gain will be a tad lower. I know a guy who did this and IRan a 4-1000A that way for years. fc Title: Yup Post by: WA1HZK on January 22, 2005, 10:24:52 PM Strap the grid & screen together. Works pissa. Cheaper than a pair of 500's when you have a box full of 400's. AMfone - Dedicated to Amplitude Modulation on the Amateur Radio Bands
Keith |