Phil's SINPO ratings prompted me to look up the definition of this code. I guessed some of it but was unsure of the rest. I found the following link useful. http://www.rnw.nl/realradio/practical/html/reportingcode.html Curious, though. I paid less than US $600 for each of my R390As. If I had paid more, would the meters in them be true S-Meters and not just "tuning indicators"?? 73, Barry - N4BUQ