The 453 is limited as to frequency response if I recall correctly, so it may only be useful on the lower bands for RF displays via the horizontal input.
If the scope has an X/Y mode, you can go beyond the usual envelope pattern you get from putting RF on the X input... In my professional work with AM, I find you can get a very useful pattern by putting RF on the X input and line-level modulating audio on the Y. It forms an ellipse that closes on 100% negative. I find it easier to see the compression/limiting action as shades of intensity on this waveform. Steve WD8DAS [EMAIL PROTECTED]
