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What type of RF Power Amplifier does the Dudley Lab master transmitter use?

April 26, 2017amplifier dudley lab master power RF transmitter type

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What type of RF Power Amplifier does the Dudley Lab master transmitter use?

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A. All of our system master transmitters for television (HPTx’s) use traveling wave tube amplifiers (TWTA’s). TWTA’s can provide 60 watts of operational power when used with a linearizer, while the maximum power from a solid state amplifier at LMDS frequencies is only a few watts. It is possible to build a transmitter with solid state amplifiers instead of TWTA’s, but it would require many of them for a television system. Such a transmitter would also be relatively difficult to build, install, and service. For a digital data system, solid state amplifiers are much more practical. We are offering this type of system now.