[Elecraft] Noisy DSP radios theory
Keith Hamilton
tuner at zoominternet.net
Thu Jan 7 12:24:39 EST 2010
I believe it is a fault of all DSP radios that they amplify the HARMONICS of a sound too much. In our earlier days before DSP,
radio amplifiers tended to amplify only the fundamental of a sound and not the partials (harmonics 2,3,4,5,6 etc.) Forgive me if this
doesn't seem clear. I am piano tuner and deal with sound and harmonics all day. But if the sound and ALL of its nearby
harmonics are all amplified equally, or the harmonics are not down in amplitude far enough from the fundamental, you might get a busy,
or noisy receiver. This could equate to amplifying the harmonics too much in a final PA and having a 'noisy" or as we call
it, a dirty transmitter.
Now I admit I have no equipment with which to test my theory but I think some smart people like Rob Sherwood who deals with
receivers all the time might be able to test this theory.
Well thanks for listening and enjoy those great Elecraft radios!
73 Keith W8GX
More information about the Elecraft
mailing list