[AMRadio] Use of an oscilloscope to monitor am audio

W5OMR/Geoff w5omr at satx.rr.com
Sun Mar 19 05:50:47 EST 2006

W7QHO at aol.com wrote:

>I use a 100:1 probe on higher power rigs.
>I don't find a "waveform" (amplitude vs. time) display difficult to 
>interpret.   Over modulation in the negative direction shows up clearly as "pearls" on 
>the baseline and positive peak levels can be easily read by slowing down the 
>trace.   Flat-toping can be clearly seen at higher sweep speeds.   Admittedly, 
>a trapezoid display can provide additional information but I've never found it 
>worth the trouble.


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