QRSS Test Chart 

Ben PA2ST produced a nice QRSS grab using graduated power output levels to show the real world effect of the changes of RF power output versus readability on a typical QRSS grabber. I thought it was so good that it deserved a page of it's own to act as a useful reference chart, analogous to the old TV test cards of old. It takes quite a bit of additional power to make a difference as you can see. A Youtube video can also be seen here.

Other tests: Link to PA2OHH's website - https://www.qsl.net/pa2ohh/12qrsssim1.htm