[Amps] RF probe and SSB (may be a little OT)

[k7fm]

> I have a scope but I am not sure about buying/building a RF probe.

A simple and inexpensive setup to monitor the distortion of the signal, 
caused by the amplifier, is to rectify both the input and output of the amp, 
with little home built detectors.  Then feed the output of one into the 
vertical plates and the output of the other into the horizontal.  You are 
simply measuring dc, so you do not need much bandwidth - just dc coupling.

You will end up with a straight line until the amp starts to flat top.  The 
line then gets crooked and means you have gone too far.  Turn mike gain 
counterclockwise until you see a straight line.

73,  Colin  K7FM