For tuning amplifiers many of us use a string of high speed dits so the amp can run at full instantaneous power while keeping average power down. It's easier on the tubes and you don't need such a stout dummy load. TRLog has a feature to do this -- no matter what your keying speed is set to, you hold SHIFT+CTRL and you get a string of high speed dits. This would be a cool feature to have as an option for the TUNE button instead of a continuous carrier. To make us control freaks happiest, duty cycle and speed should be adjustable. 73, Carl WS7L
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