As an analog, HDR, discrete component, radical homebrew fundamentalist, obviously I have been concerned about all the hype about SDR. SDR advocates often make it sound as if those of us who build with discrete analog components (crystal filters!) are hopless troglodytes, about to be thrown on the ash heap of radio history. Or something like that. They sort of imply that without the cleansing benefits of SDR, our signals will remain hoplessly dirty.
I find it interesting that Sherwood concluded that the cleanest transmitter he ever owned was a Collins 32S-3! He compared the two tone output of this old rig to that of a modern transceiver. This was in 2019. See above. HDR wins.
Don't get me wrong. I want to clean up the signals from my HDR rigs. But I am encouraged by Sherwood's remarks. I do not think I will have to go SDR in order to have a clean signal. I may just do some two-tone tests on the rigs, make some adjustments, and maybe build a class A Thermatron .1 kW linear.
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