🚀 go-pugleaf

on a 20MHz scope, the only signals you have a decent chance
of seeing at 20MHz are sinusoids and even then, the phase
and amplitude will not be correct.  you'll just have an indication
that their exists a signal with a definitive frequency.

forget about square waves beyond 10MHz unless you want an 
overall idea that a square wave is being attempted on the
device being observed.  audio work is very good with this
type of scope.  i own a dual trace 35MHz and have been very
satisfied with it for home use and little high speed 
digital work.  i have a jameco model probably made by someone
else.

d