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Mike Coslo wrote:
Solid state transmitters are notoriously finicky about matching to the antenna. Tube equipment is not, so I am told, and early experience seems to bear that out. Certainly I can see one of my newer rigs start to fold back at 2:1. What are the practical limitations of the Tube finals apparent flexibility? Is it safe to compare the load, plate, and drive controls to some of the functions of a tuner? (possible real dumb question) - 73 de Mike KB3EIA - Most quality built amps will cover 2-30mhz, they only need the proper filters behind 'em to keep 'em clean, and of course, you exciter needs to put out a clean sig. Motorola has a great circuit using four 250W transistors to get you a kilo. It can be found on the web. There are scores of tech papers by motorola on 100W to 1K and beyond amps, a little research on the web should discover them. JS -- http://assemblywizard.tekcities.com |
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