I have a GPSDO that emits a very clean low phase noise 10MHz sine wave. Expected to be seen is one signal at only 10 MHz (although even that is unnecesary). Instead there are multiple harmonics adding noise to the entire pass band. The frequency is accurate, but comes with unwanted noise.
Why not keep Ref sine wave clean and as a sine wave versus squaring the waveform creating harmonics??? We no longer need to see reference harmonics that hams used to rely on decades ago. It is enough to know that the Ref input *sets* the radio's frequency.
Keep the pass band as clean as possible!!
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